Author: "Lidia Tasca" / Topic: physics - Searchworks@Jio Institute Digital Library Search Results

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83 results on '"Lidia Tasca"'

1. The VANDELS ESO public spectroscopic survey

Author: Nimish P. Hathi, Michele Moresco, Jennifer M. Lotz, Seock-Sam Kim, Lidia Tasca, Andrea Grazian, Intae Jung, Adriano Fontana, Casey Papovich, William G. Hartley, Kirpal Nandra, Emanuela Pompei, S. Bardelli, R. Begley, Mauro Giavalisco, Paola Santini, H. C. Ferguson, Andrea Cimatti, J. S. Dunlop, Lucia Guaita, H. Mendez-Hernandez, Christina C. Williams, Giovanni Cresci, A. C. Carnall, A. Saxena, Adriana Gargiulo, Paolo Cassata, A. Iovino, C. Caputi, D. Maccagni, Stephane Charlot, Michele Cirasuolo, Johan P. U. Fynbo, Stefano Cristiani, Fabrizio Fiore, L. Pentericci, Guido Roberts-Borsani, E. Curtis-Lake, M. Longhetti, Manuela Magliocchetti, Matt J. Jarvis, M. Mignoli, Y. Khusanova, Paola Popesso, Annalisa Citro, Mara Salvato, Ricardo Amorín, Lucia Pozzetti, Olga Cucciati, Fergus Cullen, Pascale Hibon, Fernando Buitrago, Daniel P. Stark, Corentin Schreiber, M. Fumana, P. Franzetti, Jairo Méndez-Abreu, E. Zucca, R. C. Thomas, Filippo Mannucci, Ross J. McLure, Mark Dickinson, K. Matsuoka, M. Franco, O. Le Fèvre, Daniel Schaerer, Steve Finkelstein, M. Bolzonella, Fabio Fontanot, David J. Rosario, Eric F. Bell, Marco Castellano, A. Calabrò, Antonis Georgakakis, Mario Nonino, G. Vietri, Maurilio Pannella, G. Brammer, Marcella Brusa, David T. Maltby, Stéphanie Juneau, Bianca Garilli, Anton M. Koekemoer, Angela Bongiorno, Vivienne Wild, Giovanni G. Fazio, David Elbaz, Margherita Talia, D. J. McLeod, M. Scodeggio, Alberto Saldana-Lopez, M. Hamadouche, Italo Balestra, Omar Almaini, G. Zamorani, Eros Vanzella, Rebecca A. A. Bowler, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Garilli B., McLure R., Pentericci L., Franzetti P., Gargiulo A., Carnall A., Cucciati O., Iovino A., Amorin R., Bolzonella M., Bongiorno A., Castellano M., Cimatti A., Cirasuolo M., Cullen F., Dunlop J., Elbaz D., Finkelstein S., Fontana A., Fontanot F., Fumana M., Guaita L., Hartley W., Jarvis M., Juneau S., Maccagni D., McLeod D., Nandra K., Pompei E., Pozzetti L., Scodeggio M., Talia M., Calabro A., Cresci G., Fynbo J.P.U., Hathi N.P., Hibon P., Koekemoer A.M., Magliocchetti M., Salvato M., Vietri G., Zamorani G., Almaini O., Balestra I., Bardelli S., Begley R., Brammer G., Bell E.F., Bowler R.A.A., Brusa M., Buitrago F., Caputi C., Cassata P., Charlot S., Citro A., Cristiani S., Curtis-Lake E., Dickinson M., Fazio G., Ferguson H.C., Fiore F., Franco M., Georgakakis A., Giavalisco M., Grazian A., Hamadouche M., Jung I., Kim S., Khusanova Y., Le Fevre O., Longhetti M., Lotz J., Mannucci F., Maltby D., Matsuoka K., Mendez-Hernandez H., Mendez-Abreu J., Mignoli M., Moresco M., Nonino M., Pannella M., Papovich C., Popesso P., Roberts-Borsani G., Rosario D.J., Saldana-Lopez A., Santini P., Saxena A., Schaerer D., Schreiber C., Stark D., Tasca L.A.M., Thomas R., Vanzella E., Wild V., Williams C., Zucca E., University of St Andrews. School of Physics and Astronomy, and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: SELECTION, Galaxies: fundamental parameter, Astrophysics, I, Surveys, 01 natural sciences, observations/surveys/catalogs [Cosmology], Cosmology: observation, Cosmology: Observations, Spectral line, statistics [Galaxies], DATA-REDUCTION, QB Astronomy, Galaxies: distances and redshift, Galaxies: Fundamental Parameters, 010303 astronomy & astrophysics, QC, QB, REDSHIFT SURVEY, Physics, observations [cosmology], Catalogs, Cosmology: observations, Galaxies: distances and redshifts, Galaxies: fundamental parameters, Galaxies: statistics, Galaxies: Statistics, fundamental parameters [Galaxies], astro-ph.CO, Catalog, X-RAY-PROPERTIES, Data release, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), astro-ph.GA, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies: Distances and Redshifts, surveys, 0103 physical sciences, STAR-FORMING GALAXIES, distances and redshifts [Galaxies], Astrophysics::Galaxy Astrophysics, 010308 nuclear & particles physics, Galaxies: statistic, Astronomy and Astrophysics, DAS, VLT DEEP SURVEY, Astrophysics - Astrophysics of Galaxies, EVOLUTION, STELLAR, QC Physics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), QUIESCENT GALAXIES, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], catalogs
Abstract: VANDELS is an ESO Public Spectroscopic Survey designed to build a sample of high signal to noise, medium resolution spectra of galaxies at redshift between 1 and 6.5. Here we present the final Public Data Release of the VANDELS Survey, comprising 2087 redshift measurements. We give a detailed description of sample selection, observations and data reduction procedures. The final catalogue reaches a target selection completeness of 40% at iAB = 25. The high Signal to Noise ratio of the spectra (above 7 in 80% of the spectra) and the dispersion of 2.5�� allowed us to measure redshifts with high precision, the redshift measurement success rate reaching almost 100%. Together with the redshift catalogue and the reduced spectra, we also provide optical mid-IR photometry and physical parameters derived through SED fitting. The observed galaxy sample comprises both passive and star forming galaxies covering a stellar mass range 8.3< Log(M*/Msolar), 16 pages, 13 figures, accepted for publication in Astronomy & Astrophysics
Published: 2021
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2. The VIMOS Public Extragalactic Redshift Survey (VIPERS): Environment-size relation of massive passive galaxies at 0.5 ≤ z ≤ 0.8

Author: P. Franzetti, O. Cucciati, S. de la Torre, A. Zanichelli, Alexander Fritz, John A. Peacock, C. Adami, Federico Marulli, S. Arnouts, A. Gargiulo, Katarzyna Małek, Ummi Abbas, Enzo Branchini, M. Polletta, A. Cappi, M. Bolzonella, A. Iovino, B. Garilli, Luigi Guzzo, Thibaud Moutard, Chris P. Haines, A. J. Hawken, O. Le Fèvre, Agnieszka Pollo, Jean Coupon, Rita Tojeiro, Lidia Tasca, V. Le Brun, O. Ilbert, D. Bottini, M. Scodeggio, Benjamin R. Granett, G. De Lucia, Julien Bel, J. Krywult, D. Vergani, D. Maccagni, G. Zamorani, Lauro Moscardini, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Saint Mary's University [Halifax], Aix Marseille Université (AMU), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Gargiulo, A., Cucciati, O., Garilli, B., Scodeggio, M., Bolzonella, M., Zamorani, G., De Lucia, G., Krywult, J., Guzzo, L., Granett, B. R., de la Torre, S., Abbas, U., Adami, C., Arnouts, S., Bottini, D., Cappi, A., Franzetti, P., Fritz, A., Haines, C., Hawken, A. J., Iovino, A., Le Brun, V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Moutard, T., Polletta, M., Pollo, A., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Bel, J., Branchini, E., Coupon, J., Ilbert, O., Moscardini, L., Peacock, J. A., University of St Andrews. School of Physics and Astronomy, Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), ITA, GBR, FRA, and POL
Subjects: Stellar mass, formation [galaxies], Population, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 0103 physical sciences, Satellite galaxy, QB Astronomy, galaxies: formation, education, 010303 astronomy & astrophysics, QC, evolution [galaxies], Astrophysics::Galaxy Astrophysics, QB, Physics, education.field_of_study, 010308 nuclear & particles physics, Sigma, Astronomy and Astrophysics, 3rd-DAS, Redshift survey, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Accretion (astrophysics), QC Physics, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution
Abstract: We use the statistics of the VIPERS survey to investigate the relation between the surface mean stellar mass density Sigma=Mstar/(2*pi*Re^2) of massive passive galaxies (MPGs, Mstar>10^11 Msun) and their environment in the redshift range 0.52*10^11 Msun, we find an excess of MPGs with low Sigma and a deficit of high-Sigma MPGs in the densest regions wrt other environments. We interpret this result as due to the migration of some high-Sigma MPGs (0.8 migrate to the MPG population. Here, we investigate the Sigma-delta relation of MSFGs at z>0.8 and find that it is consistent within 1 sigma with that of low-Sigma MPGs at z0.8 are consistent in terms of number and environment with being the progenitors of low-Sigma MPGs at z, Comment: 12 pages, accepted for publication in A&A
Published: 2019
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3. The VIMOS Ultra-Deep Survey: Emerging from the dark, a massive proto-cluster at z ~ 4.57

Author: B. Ribeiro, S. Berta, Vernesa Smolčić, D. Maccagni, Daniel Schaerer, Janine Pforr, Anton M. Koekemoer, Nimish P. Hathi, R. Thomas, G. Zamorani, S. Bardelli, Lidia Tasca, Paolo Cassata, Ricardo Amorín, E. Zucca, Ivan Delvecchio, Olga Cucciati, Olivier Ilbert, Brian C. Lemaux, H. J. McCracken, O. Le Fèvre, Mladen Novak, Bianca Garilli, Department of Physics and Astronomy [Univ California Davis] (Physics - UC Davis), University of California [Davis] (UC Davis), University of California (UC)-University of California (UC), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Space Telescope Science Institute (STSci), University of Zagreb, Max-Planck-Institut für Extraterrestrische Physik (MPE), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Roma (OAR), INAF-IASF Milano, Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Oncology Institute of Southern Switzerland, Department of Physics [Davis], University of California-University of California, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Active galactic nucleus, PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, media_common.quotation_subject, FOS: Physical sciences, Astrophysics, 01 natural sciences, Galaxies : high-redshift, photometric [techniques], [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Intracluster medium, 0103 physical sciences, Cluster (physics), NATURAL SCIENCES. Physics. Astronomy and Astrophysics, clusters: general [galaxies], 010303 astronomy & astrophysics, Galaxies : clusters, evolution [galaxies], media_common, Physics, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Universe, Redshift, Galaxies : évolution, galaxies: evolution, galaxies: clusters: general, galaxies: high-redshift, techniques: spectroscopic, techniques: photometric, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), spectroscopic [techniques], Halo, Techniques : photometric, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], high-redshift [galaxies], Techniques spectroscopic
Abstract: Using spectroscopic observations taken for the VIMOS Ultra-Deep Survey (VUDS) we report here on the discovery of PCl J1001+0220, a massive proto-cluster located at $z_{spec}\sim4.57$ in the COSMOS field. The proto-cluster was initially detected as a $\sim12\sigma$ overdensity of typical star-forming galaxies in the blind spectroscopic survey of the early universe ($2, Comment: 27 pages, 14 figures, 1 table, accepted to A&A, minor changes from v1
Published: 2018
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4. The progeny of a Cosmic Titan: a massive multi-component proto-supercluster in formation at $z=2.45$ in VUDS

Author: Letizia P. Cassarà, V. Le Brun, Paolo Cassata, Eros Vanzella, Mara Salvato, Daniela Vergani, O. Le Fèvre, Nimish P. Hathi, L. Pentericci, E. Zucca, Anton M. Koekemoer, L. M. Lubin, D. Maccagni, Janine Pforr, Ricardo Amorín, Lidia Tasca, Bianca Garilli, Andrea Cimatti, Olga Cucciati, K. G. Lee, Brian C. Lemaux, S. Bardelli, Margherita Talia, G. Zamorani, R. C. Thomas, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Cucciati, O., Lemaux, B.C., Zamorani, G., Le Fèvre, O., Tasca, L.A.M., Hathi, N.P., Lee, K.-G., Bardelli, S., Cassata, P., Garilli, B., Le Brun, V., Maccagni, D., Pentericci, L., Thomas, R., Vanzella, E., Zucca, E., Lubin, L.M., Amorin, R., Cassarà, L.P., Cimatti, A., Talia, M., Vergani, D., Koekemoer, A., Pforr, J., Salvato, M., and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), Field (physics), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Cosmology: observation, 01 natural sciences, Supercluster, galaxies: high-redshift, 0103 physical sciences, Spectroscopy, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Line-of-sight, 010308 nuclear & particles physics, Velocity dispersion, Astronomy and Astrophysics, Virial mass, Astronomy and Astrophysic, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Space and Planetary Science, galaxies: clusters: general, Astrophysics of Galaxies (astro-ph.GA), cosmology: observations, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Cosmology: observations, Galaxies: clusters: general, Galaxies: high-redshift, Large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: [Abridged] We unveil the complex shape of a proto-supercluster at z~2.45 in the COSMOS field using the spectroscopic redshifts of the VIMOS Ultra-Deep Survey (VUDS), complemented by the zCOSMOS-Deep sample and high-quality photometric redshifts. The method relies on a 2D Voronoi tessellation in overlapping redshift slices that is converted into a 3D density field. The galaxy distribution is constructed using a statistical treatment of spectroscopic and photometric redshifts. We identify a proto-supercluster, dubbed "Hyperion" for its immense size and mass, which extends over a volume of ~60x60x150 comoving Mpc^3 and has an estimated total mass of ~4.8x 10^15 M_sun. This immensely complex structure contains at least 7 density peaks within 2.4 < z < 2.5, connected by filaments. Based on the peaks average matter density, we estimate their total mass, M_tot, and find a range of masses from ~0.1x10^14 M_sun to ~2.7x10^14 M_sun. By using spectroscopic members of each peak, we obtain the velocity dispersion of the galaxies in the peaks, and then their virial mass M_vir (under the strong assumption that they are virialised). The agreement between M_vir and M_tot is surprisingly good, considering that almost all the peaks are probably not yet virialised. According to the spherical collapse model, the peaks have already started or are about to start collapsing, and they are all predicted to be virialised by redshift z~0.8-1.6. We finally perform a careful comparison with the literature, given that smaller components of this proto-supercluster had previously been identified using heterogeneous galaxy samples. With VUDS, we obtain a panoramic view of this large structure, that encompasses, connects, and considerably expands in a homogeneous way on all previous detections of the various sub-components. This provides us the unique possibility to study a rich supercluster in formation., 22 pages, 13 figures, accepted to be published in A&A, very minor corrections after language editing
Published: 2018
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5. The VIMOS Public Extragalactic Redshift Survey (VIPERS)

Author: Małgorzata Siudek, G. De Lucia, Daniela Vergani, P. Franzetti, C. Adami, Stéphane Arnouts, M. Scodeggio, V. Le Brun, A. Zanichelli, T. Moutard, Julien Bel, Lauro Moscardini, Chris P. Haines, D. Bottini, D. Maccagni, Iary Davidzon, Enzo Branchini, Tsutomu T. Takeuchi, Lidia Tasca, Jean Coupon, Olga Cucciati, Bianca Garilli, Olivier Ilbert, G. Zamorani, A. Cappi, Agnieszka Pollo, Luigi Guzzo, Katarzyna Małek, A. Iovino, J. Krywult, Ummi Abbas, Tomasz Krakowski, Benjamin R. Granett, M. Bolzonella, Alexander Fritz, Federico Marulli, O. Le Fèvre, M. Polletta, S. de la Torre, Rita Tojeiro, Siudek, M., Małek, K., Pollo, A., Krakowski, T., Iovino, A., Scodeggio, M., Moutard, T., Zamorani, G., Guzzo, L., Garilli, B., Granett, B.R., Bolzonella, M., De La Torre, S., Abbas, U., Adami, C., Bottini, D., Cappi, A., Cucciati, O., Davidzon, I., Franzetti, P., Fritz, A., Krywult, J., Le Brun, V., Le Fèvre, O., MacCagni, D., Marulli, F., Polletta, M., Tasca, L.A.M., Tojeiro, R., Vergani, D., Zanichelli, A., Arnouts, S., Bel, J., Branchini, E., Coupon, J., De Lucia, G., Ilbert, O., Haines, C.P., Moscardini, L., Takeuchi, T.T., Center for Theoretical Physics, Polish Academy of Sciences , Al. Lotników 32/46, 02-668 Warsaw, Poland (CFT PAN), National Centre for Nuclear Research (Warszawa), INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano (IASF-MI), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Università degli Studi di Milano [Milano] (UNIMI), INAF - Osservatorio Astrofisico di Torino (OATo), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Jan Kochanowski University, Alma Mater Studiorum University of Bologna (UNIBO), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (INFN, Sezione di Bologna), Istituto Nazionale di Fisica Nucleare (INFN), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), University of St Andrews [Scotland], Istituto di Radioastronomia [Bologna] (IRA), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi Roma Tre, Istituto Nazionale di Fisica Nucleare, Sezione di Roma 3 (INFN, Sezione di Roma 3), INAF - Osservatorio Astronomico di Roma (OAR), University of Geneva [Switzerland], INAF - Osservatorio Astronomico di Trieste (OAT), Nagoya University, Università degli Studi di Milano = University of Milan (UNIMI), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Università degli Studi Roma Tre = Roma Tre University (ROMA TRE), Université de Genève = University of Geneva (UNIGE), Granett, B. R., Maccagni, D., Tasca, L. A. M., Haines, C. P., Takeuchi, T. T., ITA, USA, GBR, FRA, and DEU
Subjects: Active galactic nucleus, Galaxies: statistics, Astrophysics, Galaxies: groups: general, Astrophysics::Cosmology and Extragalactic Astrophysics, Parameter space, 01 natural sciences, star formation [Galaxies], [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Sequence, Galaxies: star formation, 010308 nuclear & particles physics, Spectral density, Galaxies: evolution, Astronomy and Astrophysics, Galaxy: fundamental parameters, Astronomy and Astrophysic, Redshift survey, evolution [Galaxies], Galaxies: stellar content, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Space and Planetary Science, Unsupervised learning, stellar content [Galaxies]
Abstract: Various galaxy classification schemes have been developed so far to constrain the main physical processes regulating evolution of different galaxy types. In the era of a deluge of astrophysical information and recent progress in machine learning, a new approach to galaxy classification becomes imperative. We employ a Fisher Expectation-Maximization unsupervised algorithm working in a parameter space of 12 rest-frame magnitudes and spectroscopic redshift. The model (DBk) and the number of classes (12) were established based on the joint analysis of standard statistical criteria and confirmed by the analysis of the galaxy distribution with respect to a number of classes and their properties. This new approach allows us to classify galaxies based just on their redshifts and UV-NIR spectral energy distributions. The FEM unsupervised algorithm has automatically distinguished 12 classes: 11 classes of VIPERS galaxies and an additional class of broad-line AGNs. After a first broad division into blue, green and red categories we obtained a further sub-division into three red, three green, and five blue galaxy classes. The FEM classes follow the galaxy sequence from the earliest to the latest types that is reflected in their colours (which are constructed from rest-frame magnitudes used in classification procedure) but also their morphological, physical, and spectroscopic properties (not included in the classification scheme). We demonstrate that the members of each class share similar physical and spectral properties. In particular, we are able to find three different classes of red passive galaxy populations. Thus, we demonstrate the potential of an unsupervised approach to galaxy classification and we retrieve the complexity of galaxy populations at z~0.7, a task that usual simpler colour-based approaches cannot fulfil., Comment: published in A&A, 27 pages, 10 figures, 4 appendixes. Please contact Malgorzata Siudek (msiudek@ifae.es) if you are interested in the catalogue
Published: 2018
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6. The VIMOS Public Extragalactic Redshift Survey (VIPERS): AGN feedback in [NeV] emitters

Author: Alexander Fritz, Lidia Tasca, Federico Marulli, O. Cucciati, S. de la Torre, Iary Davidzon, Agnieszka Pollo, P. Franzetti, B. Garilli, T. Moutard, S. Arnouts, C. Adami, Ummi Abbas, G. Zamorani, A. J. Hawken, Rita Tojeiro, M. Bolzonella, G. De Lucia, M. Scodeggio, Luigi Guzzo, Lauro Moscardini, Benjamin R. Granett, D. Bottini, M. Polletta, A. Iovino, Enzo Branchini, Chris P. Haines, A. Cappi, V. Le Brun, O. Ilbert, Jean Coupon, A. Gargiulo, A. Zanichelli, Katarzyna Małek, J. Krywult, D. Maccagni, D. Vergani, Julien Bel, O. Le Fèvre, Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Vergani, D., Garilli, B., Polletta, M., Franzetti, P., Scodeggio, M., Zamorani, G., Haines, C.P., Bolzonella, M., Guzzo, L., Granett, B.R., De La Torre, S., Abbas, U., Adami, C., Bottini, D., Cappi, A., Cucciati, O., Davidzon, I., De Lucia, G., Fritz, A., Gargiulo, A., Hawken, A.J., Iovino, A., Krywult, J., Le Brun, V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Pollo, A., Tasca, L.A.M., Tojeiro, R., Zanichelli, A., Arnouts, S., Bel, J., Branchini, E., Coupon, J., Ilbert, O., Moutard, T., Moscardini, L., Haines, C. P., Granett, B. R., Hawken, A. J., Tasca, L. A. M., Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Stellar mass, active [Galaxies], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, observation [Cosmology], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, star formation [Galaxies], Cosmology: observation, Luminosity, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Emission spectrum, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Line (formation), Physics, Galaxies: star formation, 010308 nuclear & particles physics, Star formation, Cosmology: observations, Galaxies: evolution, Astronomy and Astrophysics, Galaxies: active, Astronomy and Astrophysic, Space and Planetary Science, Redshift survey, evolution [Galaxies], Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, observations [cosmology], Astrophysics of Galaxies (astro-ph.GA), High Energy Physics::Experiment, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]
Abstract: Using an unconventional single line diagnostic that unambiguously identifies AGNs in composite galaxies we report statistical differences in the properties (stellar age, [OII] luminosity, colour) between active and inactive galaxies at 0.62, Comment: 13 pages, 9 figures, submitted to A&A
Published: 2018
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7. Correction: Corrigendum: Analogues of primeval galaxies two billion years after the Big Bang

Author: Brian C. Lemaux, Olivier Le Fevre, Anton M. Koekemoer, Daniel Schaerer, E. Zucca, Adriano Fontana, Daniela Vergani, Vincent Le Brun, Marco Castellano, Andrea Grazian, Eros Vanzella, Enrique Perez-Montero, Emiliano Merlin, Mauro Giavalisco, B. Ribeiro, Nimish P. Hathi, Laura Pentericci, D. Maccagni, R. Thomas, Thierry Contini, Lidia Tasca, Janine Pforr, Andrea Cimatti, G. Zamorani, Ricardo Amorín, Margherita Talia, S. Bardelli, Bianca Garilli, Paolo Cassata, Laurence Tresse, Stephane de Barros, Lucia Guaita, and Letizia P. Cassarà
Subjects: Physics, Astronomy, Astronomy and Astrophysics, Astrophysics, Billion years, Galaxy
Abstract: Nature Astronomy 1, 0052 (2017); published 2 March 2017; corrected 13 March 2017. In the version of this Letter originally published, in ref. 1 R. J. Bouwens's surname was spelled incorrectly. This has now been corrected in all versions of the Letter.
Published: 2017
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8. Analogues of primeval galaxies two billion years after the Big Bang

Author: Emiliano Merlin, R. Thomas, Enrique Pérez-Montero, G. Zamorani, Stephane de Barros, Daniel Schaerer, Lucia Guaita, Anton M. Koekemoer, E. Zucca, Olivier Le Fèvre, Vincent Le Brun, Letizia P. Cassarà, Brian C. Lemaux, Andrea Grazian, Laurence Tresse, Janine Pforr, B. Ribeiro, Margherita Talia, Andrea Cimatti, Thierry Contini, Bianca Garilli, Eros Vanzella, Daniela Vergani, S. Bardelli, Nimish P. Hathi, Paolo Cassata, Lidia Tasca, Adriano Fontana, Marco Castellano, Ricardo Amorín, Laura Pentericci, D. Maccagni, Mauro Giavalisco, Amorin Barbieri, Ricardo [0000-0001-5758-1000], Apollo - University of Cambridge Repository, Amorín, Ricardo, Fontana, Adriano, Pérez-Montero, Enrique, Castellano, Marco, Guaita, Lucia, Grazian, Andrea, Fèvre, Olivier Le, Ribeiro, Bruno, Schaerer, Daniel, Tasca, Lidia A.M., Thomas, Romain, Bardelli, Sandro, Cassarà, Letizia, Cassata, Paolo, Cimatti, Andrea, Contini, Thierry, Barros, Stephane De, Garilli, Bianca, Giavalisco, Mauro, Hathi, Nimish, Koekemoer, Anton, Le Brun, Vincent, Lemaux, Brian C., MacCagni, Dario, Pentericci, Laura, Pforr, Janine, Talia, Margherita, Tresse, Laurence, Vanzella, Ero, Vergani, Daniela, Zamorani, Giovanni, Zucca, Elena, Merlin, Emiliano, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
Subjects: galaxies and clusters, Physics, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Stellar mass, 010308 nuclear & particles physics, Star formation, Population, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Billion years, Redshift, Galaxy, Accretion (astrophysics), Cosmology, 13. Climate action, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, education, cosmology, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: Deep observations are revealing a growing number of young galaxies in the first billion years of cosmic time1. Compared to typical galaxies at later times, they show more extreme emission-line properties2, higher star formation rates3, lower masses4, and smaller sizes5. However, their faintness precludes studies of their chemical abundances and ionization conditions, strongly limiting our understanding of the physics driving early galaxy build-up and metal enrichment. Here we study a rare population of ultraviolet-selected, low-luminosity galaxies at redshift 2.4 < z < 3.5 that exhibit all the rest-frame properties expected from primeval galaxies. These low-mass, highly compact systems are rapidly forming galaxies able to double their stellar mass in only a few tens of millions of years. They are characterized by very blue ultraviolet spectra with weak absorption features and bright nebular emission lines, which imply hard radiation fields from young hot massive stars6,7. Their highly ionized gas phase has strongly sub-solar carbon and oxygen abundances, with metallicities more than a factor of two lower than that found in typical galaxies of similar mass and star formation rate at z≤2.58. These young galaxies reveal an early and short stage in the assembly of their galactic structures and their chemical evolution, a vigorous phase that is likely to be dominated by the effects of gas-rich mergers, accretion of metal-poor gas and strong outflows. A selected group of intermediate-redshift galaxies appear similar to primeval galaxies. Analysing spectra of these nearer analogues for chemical abundances and ionization levels gives an improved understanding of galaxies that are too faint to study well.
Published: 2017
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9. The VLA-COSMOS 3 GHz Large Project: Multiwavelength counterparts and the composition of the faint radio population

Author: Peter Capak, Lidia Tasca, Vernesa Smolčić, Mara Salvato, N. Baran, Stefano Marchesi, H. J. McCracken, Ivan Delvecchio, O. Le Fèvre, G. Zamorani, Alexander Karim, S. Berta, M. Bondi, Paolo Ciliegi, Francesca Civano, Olivier Ilbert, Clotilde Laigle, Eleni Vardoulaki, Eva Schinnerer, J. Delhaize, Mladen Novak, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
Subjects: PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, galaxies – catalogs, 01 natural sciences, radio continuum, radio continuum, galaxies – catalogs, 0103 physical sciences, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics
Abstract: (abridged) We study the composition of the faint radio population selected from the VLA-COSMOS 3GHz Large Project. The survey covers a 2.6sq.deg. area with a mean rms of ~2.3uJy/b, cataloging 10830 sources (>5sigma). Combining these radio data with optical, near-infrared (UltraVISTA), mid-infrared (Spitzer/IRAC) data, and X-ray data (Chandra), we find counterparts to radio sources for ~93% of the radio sample (in the areas of the COSMOS field not affected by saturated or bright sources in the optical to NIR bands), reaching out to z75%) dominated by star-forming galaxies., 21 pages, 22 figures, accepted for publication in A&A
Published: 2017
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10. The VIMOS Public Extragalactic Redshift Survey (VIPERS). Exploring the dependence of the three-point correlation function on stellar mass and luminosity at $0.5 < z < 1.1$

Author: Enzo Branchini, A. Cappi, M. Scodeggio, O. Cucciati, A. Iovino, S. de la Torre, Alexander Fritz, Iary Davidzon, Michele Moresco, O. Le Fèvre, M. Bolzonella, Lidia Tasca, Federico Marulli, M. Fumana, Ummi Abbas, P. Franzetti, M. Polletta, Rita Tojeiro, V. Le Brun, O. Ilbert, H. J. McCracken, Luigi Guzzo, G. De Lucia, B. Garilli, C. Adami, Benjamin R. Granett, A. Zanichelli, Agnieszka Pollo, Jean Coupon, S. Arnouts, Carmelita Carbone, J. Krywult, D. Vergani, Lauro Moscardini, D. Bottini, Julien Bel, Katarzyna Małek, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université de Toulon (UTLN), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Moresco, M., Marulli, F., Moscardini, L., Branchini, E., Cappi, A., Davidzon, I., Granett, B.R., De La Torre, S., Guzzo, L., Abbas, U., Adami, C., Arnouts, S., Bel, J., Bolzonella, M., Bottini, D., Carbone, C., Coupon, J., Cucciati, O., De Lucia, G., Franzetti, P., Fritz, A., Fumana, M., Garilli, B., Ilbert, O., Iovino, A., Krywult, J., Le Brun, V., Le Fèvre, O., Małek, K., McCracken, H.J., Polletta, M., Pollo, A., Scodeggio, M., Tasca, L.A.M., Tojeiro, R., Vergani, D., Zanichelli, A., Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE ( LAGRANGE ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Astrophysique de Marseille ( LAM ), Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique Théorique - UMR 7332 ( CPT ), Aix Marseille Université ( AMU ) -Université de Toulon ( UTLN ) -Centre National de la Recherche Scientifique ( CNRS ), Université de Toulon ( UTLN ), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Granett, B. R., Mccracken, H. J., Tasca, L. A. M., Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Stellar mass, Large-scale structure of Universe, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], observation [Cosmology], Astrophysics, Correlation function (astronomy), Cosmology: observation, 01 natural sciences, Cosmology, Luminosity, statistics [Galaxies], 0103 physical sciences, distances and redshifts [Galaxies], Galaxies: distances and redshift, observations [Cosmology], 010303 astronomy & astrophysics, galaxies: statistics, Physics, Very Large Telescope, statistic [Galaxies], Galaxies: statistic, 010308 nuclear & particles physics, distances and redshift [Galaxies], Astronomy and Astrophysics, Astronomy and Astrophysic, Redshift survey, evolution [Galaxies], Galaxy, Redshift, Cosmology: observations, Galaxies: distances and redshifts, Galaxies: evolution, Galaxies: statistics, Space and Planetary Science, cosmology: observations, astro-ph.CO, large-scale structure of Universe, galaxies: distances and redshifts, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The three-point correlation function (3PCF) is a powerful probe to investigate the clustering of matter in the Universe in a complementary way with respect to lower-order statistics, providing additional information with respect to the two-point correlation function and allowing us to shed light on biasing, nonlinear processes, and deviations from Gaussian statistics. In this paper, we analyse the first data release of the VIMOS Public Extragalactic Redshift Survey (VIPERS), determining the dependence of the three-point correlation function on luminosity and stellar mass at $z=[0.5,1.1]$. We exploit the VIPERS Public Data Release 1, consisting of more than 50,000 galaxies with B-band magnitudes in the range $-21.6\lesssim M_{\rm B}-5\log(h)\lesssim-19.9$ and stellar masses in the range $9.8\lesssim\log(M_\star[h^{-2}\,M_\odot])\lesssim 10.7$. We measure both the connected 3PCF and the reduced 3PCF in redshift space, probing different configurations and scales, in the range $2.5, Comment: 12 pages, 11 figures, 2 tables, accepted for publication in A&A
Published: 2017
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11. The VIMOS Public Extragalactic Redshift Survey (VIPERS): Gravity test from the combination of redshift-space distortions and galaxy-galaxy lensing at 0.5 < z < 1.2

Author: O. Cucciati, Julien Bel, S. de la Torre, G. De Lucia, O. Le Fèvre, Benjamin R. Granett, Ummi Abbas, C. Adami, Carlo Giocoli, Gustavo Yepes, Rita Tojeiro, Enzo Branchini, A. Cappi, B. Garilli, D. Maccagni, J. Krywult, Alexander Fritz, A. Pezzotta, M. Scodeggio, Eric Jullo, D. Vergani, R. B. Metcalf, A. Iovino, Katarzyna Małek, M. Bolzonella, Iary Davidzon, V. Le Brun, O. Ilbert, Federico Marulli, M. Polletta, Jean Coupon, A. Zanichelli, John A. Peacock, D. Bottini, Agnieszka Pollo, S. Arnouts, Lauro Moscardini, Lidia Tasca, Luigi Guzzo, P. Franzetti, T. Moutard, Francisco Prada, De La Torre, S., Jullo, E., Giocoli, C., Pezzotta, A., Bel, J., Granett, B. R., Guzzo, L., Garilli, B., Scodeggio, M., Bolzonella, M., Abbas, U., Adami, C., Bottini, D., Cappi, A., Cucciati, O., Davidzon, I., Franzetti, P., Fritz, A., Iovino, A., Krywult, J., Le Brun, V., Le FÃvre, O., Maccagni, D., Maå ek, K., Marulli, F., Polletta, M., Pollo, A., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Arnouts, S., Branchini, E., Coupon, J., De Lucia, G., Ilbert, O., Moutard, T., Moscardini, L., Peacock, J. A., Metcalf, R. B., Prada, F., Yepes, G., Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis - Faculté des Sciences (UNS UFR Sciences), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Aix Marseille Université (AMU), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Le Fèvre, O., Małek, K., Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), European Research Council, European Commission, Istituto Nazionale di Astrofisica, National Science Centre (Poland), Agence Nationale de la Recherche (France), Université Nice Sophia Antipolis (1965 - 2019) (UNS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille ( LAM ), Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique Théorique - UMR 7332 ( CPT ), Aix Marseille Université ( AMU ) -Université de Toulon ( UTLN ) -Centre National de la Recherche Scientifique ( CNRS ), Université Nice Sophia Antipolis - Faculté des Sciences ( UNS UFR Sciences ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Aix Marseille Université ( AMU ), Institut de recherche en astrophysique et planétologie ( IRAP ), and Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Cosmological parameter, Large-scale structure of Universe, General relativity, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], media_common.quotation_subject, observation [Cosmology], Astrophysics, 01 natural sciences, Cosmology: observation, Gravitation, Redshift-space distortions, high-redshift [Galaxies], 0103 physical sciences, Dark energy, Cosmological parameters, Cosmology: observations, Galaxies: high-redshift, Astronomy and Astrophysics, Space and Planetary Science, cosmological parameters, 010303 astronomy & astrophysics, media_common, Physics, 010308 nuclear & particles physics, Sigma, Astronomy and Astrophysic, Redshift survey, Galaxy, Universe, Redshift, observations [cosmology], cosmology: observations, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Full list of authors: De La Torre, S.; Jullo, E.; Giocoli, C.; Pezzotta, A.; Bel, J.; Granett, B. R.; Guzzo, L.; Garilli, B.; Scodeggio, M.; Bolzonella, M.; Abbas, U.; Adami, C.; Bottini, D.; Cappi, A.; Cucciati, O.; Davidzon, I.; Franzetti, P.; Fritz, A.; Iovino, A.; Krywult, J.; Le Brun, V.; Le Fèvre, O.; Maccagni, D.; Malek, K.; Marulli, F.; Polletta, M.; Pollo, A.; Tasca, L. A. M.; Tojeiro, R.; Vergani, D.; Zanichelli, A.; Arnouts, S.; Branchini, E.; Coupon, J.; De Lucia, G.; Ilbert, O.; Moutard, T.; Moscardini, L.; Peacock, J. A.; Metcalf, R. B.; Prada, F.; Yepes, G., We carry out a joint analysis of redshift-space distortions and galaxy-galaxy lensing, with the aim of measuring the growth rate of structure; this is a key quantity for understanding the nature of gravity on cosmological scales and late-Time cosmic acceleration. We make use of the final VIPERS redshift survey dataset, which maps a portion of the Universe at a redshift of z 0.8, and the lensing data from the CFHTLenS survey over the same area of the sky. We build a consistent theoretical model that combines non-linear galaxy biasing and redshift-space distortion models, and confront it with observations. The two probes are combined in a Bayesian maximum likelihood analysis to determine the growth rate of structure at two redshifts z = 0.6 and z = 0.86. We obtain measurements of fσ(0.6) = 0.48 ± 0.12 and fσ(0.86) = 0.48 ± 0.10. The additional galaxy-galaxy lensing constraint alleviates galaxy bias and σ degeneracies, providing direct measurements of f and σ: [f(0.6),σ(0.6)] = [0.93 ± 0.22,0.52 ± 0.06] and [f(0.86),σ(0.86)] = [0.99 ± 0.19,0.48 ± 0.04]. These measurements are statistically consistent with a Universe where the gravitational interactions can be described by General Relativity, although they are not yet accurate enough to rule out some commonly considered alternatives. Finally, as a complementary test we measure the gravitational slip parameter, E, for the first time at z > 0.6. We find values of E (0.6) = 0.16±0.09 and E (0.86) = 0.09±0.07, when E is averaged over scales above 3 h Mpc. We find that our E measurements exhibit slightly lower values than expected for standard relativistic gravity in a ΛCDM background, although the results are consistent within 1-2σ. © ESO, 2017., We acknowledge the crucial contribution of the ESO staff for the management of service observations. Italian participation to VIPERS has been funded by INAF through PRIN 2008, 2010, 2014 and 2015 programs. L.G. and B.R.G. acknowledge support from the European Research Council through grant No. 291521. O.L.F. acknowledges support from the European Research Council through grant No. 268107. J.A.P. acknowledges support of the European Research Council through the COSFORM ERC Advanced Research Grant (#670193). G.D.L. acknowledges financial support from the European Research Council through grant No. 202781. R.T. acknowledges financial support from the European Research Council through grant No. 202686. A.P., K.M., and J.K. have been supported by the National Science Centre (grants UMO-2012/07/B/ST9/04425 and UMO-2013/09/D/ST9/04030). E.B., F.M., and L.M. acknowledge the support from grants ASI-INAF I/023/12/0 and PRIN MIUR 2010-2011. L.M. also acknowledges financial support from PRIN INAF 2012. S.D.L.T., E.J., and M.P. acknowledge the support of the OCEVU Labex (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02) funded by the "Investissements d'Avenir" French government program managed by the ANR. Research conducted within the scope of the HECOLS International Associated Laboratory, supported in part by the Polish NCN grant Dec-2013/08/M/ST9/00664. T.M. and S.A. acknowledge financial support from the ANR Spin(e) through the French grant ANR-13-BS05-0005. The authors gratefully acknowledge the Gauss Centre for Supercomputing e.V. (www.gauss-centre.eu) and the Partnership for Advanced Supercomputing in Europe (PRACE, www.prace-ri.eu) for funding the MultiDark simulation project by providing computing time on the GCS Supercomputer SuperMUC at Leibniz Supercomputing Centre (LRZ,www.lrz.de).
Published: 2017
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12. The VIMOS Public Extragalactic Redshift Survey. Measuring the growth rate of structure around cosmic voids

Author: P. Franzetti, V. Le Brun, A. Zanichelli, O. Le Fèvre, M. Bolzonella, G. De Lucia, J. Krywult, C. Adami, Ummi Abbas, Enzo Branchini, Rita Tojeiro, M. Polletta, A. Iovino, Iary Davidzon, A. Cappi, Luigi Guzzo, Olivier Ilbert, S. de la Torre, Adam J. Hawken, Agnieszka Pollo, D. Maccagni, Lauro Moscardini, Alexander Fritz, Will J. Percival, John A. Peacock, Daniela Vergani, M. Scodeggio, Federico Marulli, Katarzyna Małek, Olga Cucciati, Bianca Garilli, Lidia Tasca, D. Bottini, Stéphane Arnouts, Julien Bel, Benjamin R. Granett, ITA, USA, GBR, FRA, DEU, ESP, INAF - Osservatorio Astronomico di Capodimonte (OAC), Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), University of Leeds, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Università di Bologna, Dipartimento di Astronomia, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), INAF - Osservatorio Astronomico di Brera (OAB), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), INAF- Milano, Hawken, A.J., Granett, B.R., Iovino, A., Guzzo, L., Peacock, J.A., De La Torre, S., Garilli, B., Bolzonella, M., Scodeggio, M., Abbas, U., Adami, C., Bottini, D., Cappi, A., Cucciati, O., Davidzon, I., Fritz, A., Franzetti, P., Krywult, J., Le Brun, V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Polletta, M., Pollo, A., Tasca, L.A.M., Tojeiro, R., Vergani, D., Zanichelli, A., Arnouts, S., Bel, J., Branchini, E., De Lucia, G., Ilbert, O., Moscardini, L., Percival, W.J., Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Hawken, A. J., Granett, B. R., Peacock, J. A., Tasca, L. A. M., and Percival, W. J.
Subjects: Cosmological parameter, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Large-scale structure of Universe, Population, FOS: Physical sciences, observation [Cosmology], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Space (mathematics), 01 natural sciences, Measure (mathematics), Cosmology: observation, Redshift-space distortions, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, cosmological parameters, education, 010303 astronomy & astrophysics, STFC, Physics, education.field_of_study, cosmology: large scale structure of the universe, 010308 nuclear & particles physics, ST/I001204/1, Cosmology: observations, RCUK, Astronomy and Astrophysics, Astronomy and Astrophysic, Redshift survey, observations [cosmology], Redshift, Galaxy, Distortion (mathematics), observations, Space and Planetary Science, gravitation, astro-ph.CO, large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmological parameters, Gravitation
Abstract: We identified voids in the completed VIMOS Public Extragalactic Redshift Survey (VIPERS), using an algorithm based on searching for empty spheres. We measured the cross-correlation between the centres of voids and the complete galaxy catalogue. The cross-correlation function exhibits a clear anisotropy in both VIPERS fields (W1 and W4), which is characteristic of linear redshift space distortions. By measuring the projected cross-correlation and then deprojecting it we are able to estimate the undistorted cross-correlation function. We propose that given a sufficiently well measured cross-correlation function one should be able to measure the linear growth rate of structure by applying a simple linear Gaussian streaming model for the redshift space distortions (RSD). Our study of voids in 306 mock galaxy catalogues mimicking the VIPERS fields would suggest that VIPERS is capable of measuring $\beta$ with an error of around $25\%$. Applying our method to the VIPERS data, we find a value for the redshift space distortion parameter, $\beta = 0.423^{+0.104}_{-0.108}$, which given the bias of the galaxy population we use gives a linear growth rate of $f\sigma_8 = 0.296^{+0.075}_{-0.078}$ at $z = 0.727$. These results are consistent with values observed in parallel VIPERS analysis using standard techniques., Comment: 14 pages, 12 figures
Published: 2017
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13. The VIMOS Ultra‐Deep Survey: A major merger origin for the high fraction of galaxies at 2 < &ITz&IT < 6 with two bright clumps

Author: D. Maccagni, Daniel Schaerer, Paolo Cassata, Anton M. Koekemoer, Nimish P. Hathi, E. Zucca, S. Bardelli, O. Le Fevre, B. Ribeiro, G. Zamorani, Lidia Tasca, Brian C. Lemaux, Janine Pforr, Ricardo Amorín, Bianca Garilli, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: Population, Context (language use), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies: formation, 01 natural sciences, Luminosity, Galaxies: structure, 0103 physical sciences, Galaxies: evolution, Galaxies: high-redshift, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Surface brightness, 10. No inequality, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, COSMIC cancer database, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Radius, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy
Abstract: (Abridged) The properties of stellar clumps in star forming galaxies and their evolution over the redshift range $2\lesssim z \lesssim 6$ are presented and discussed in the context of the build-up of massive galaxies at early cosmic times. We use HST/ACS images of galaxies with spectroscopic redshifts from the VIMOS Ultra Deep Survey (VUDS) to identify clumps within a 20 kpc radius. We find that the population of galaxies with more than one clump is dominated by galaxies with two clumps, representing $\sim21-25$\% of the population, while the fraction of galaxies with 3, or 4 and more, clumps is 8-11 and 7-9\%, respectively. The fraction of clumpy galaxies is in the range $\sim35-55\%$ over $2, Comment: 17 pages, 11 figures, A&A (in press)
Published: 2017
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14. An ALMA survey of submillimeter galaxies in the COSMOS field: Multiwavelength counterparts and redshift distribution

Author: Kartik Sheth, Mara Salvato, Olivier Le Fevre, Benjamin Magnelli, Felipe Navarrete, Herve Aussel, Manuel Aravena, Mladen Novak, Alexander Karim, Lidia Tasca, Francesca Civano, M. Albrecht, Nelson Padilla, Caitlin M. Casey, Christopher C. Hayward, Eva Schinnerer, Vernesa Smolčić, N. Baran, Stefano Marchesi, Kimberly S. Scott, H. J. McCracken, Chunyan Jiang, Matthieu Béthermin, Ivan Delvecchio, Drew Brisbin, Olivier Ilbert, Peter Capak, Oskari Miettinen, Frank Bertoldi, Dominik A. Riechers, Alejandra Arancibia, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), European Southern Observatory [Santiago] (ESO), European Southern Observatory (ESO), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: statistics [galaxies], PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, galaxies: distances and redshifts, galaxies: evolution, galaxies: statistics, galaxies: high-redshift, catalogs, 0103 physical sciences, Fine resolution, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, evolution [galaxies], Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Spectral energy distribution, distances and redshifts [galaxies], Millimeter, Astrophysics::Earth and Planetary Astrophysics, high-redshift [galaxies], catalogs
Abstract: We carried out targeted ALMA observations of 129 fields in the COSMOS region at 1.25 mm, detecting 152 galaxies at S/N$\geq$5 with an average continuum RMS of 150 $��$Jy. These fields represent a S/N-limited sample of AzTEC / ASTE sources with 1.1 mm S/N$\geq$4 over an area of 0.72 square degrees. Given ALMA's fine resolution and the exceptional spectroscopic and multiwavelength photometric data available in COSMOS, this survey allows us unprecedented power in identifying submillimeter galaxy counterparts and determining their redshifts through spectroscopic or photometric means. In addition to 30 sources with prior spectroscopic redshifts, we identified redshifts for 113 galaxies through photometric methods and an additional nine sources with lower limits, which allowed a statistically robust determination of the redshift distribution. We have resolved 33 AzTEC sources into multi-component systems and our redshifts suggest that nine are likely to be physically associated. Our overall redshift distribution peaks at $z\sim$2.0 with a high redshift tail skewing the median redshift to $\tilde{z}$=2.48$\pm$0.05. We find that brighter millimeter sources are preferentially found at higher redshifts. Our faintest sources, with S$_{1.25 \rm mm}$1.8 mJy, have a median redshift of $\tilde{z}$=3.08$\pm$0.17. After accounting for spectral energy distribution shape and selection effects these results are consistent with several previous submillimeter galaxy surveys, and moreover, support the conclusion that the submillimeter galaxy redshift distribution is sensitive to survey depth., Accepted for publication in Astronomy & Astrophysics for review 17 pages in body + 26 in appendices
Published: 2017
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15. An ALMA survey of submillimetre galaxies in the COSMOS field: The extent of the radio‐emitting region revealed by 3 GHz imaging with the Very Large Array

Author: Felipe Navarrete, Alexander Karim, Manuel Aravena, Kartik Sheth, Mara Salvato, Ivan Delvecchio, Clotilde Laigle, H. J. McCracken, Stefano Marchesi, Chunyan Jiang, M. Albrecht, Enno Middelberg, Kimberly S. Scott, Christopher C. Hayward, Mladen Novak, Herve Aussel, Oskari Miettinen, Alejandra Arancibia, Drew Brisbin, Dominik Riechers, Benjamin Magnelli, Noelia Herrera Ruiz, Eric J. Murphy, Francesca Civano, Eva Schinnerer, M. Bondi, Peter Capak, Vernesa Smolčić, Lidia Tasca, Nelson Padilla, Gianni Zamorani, Olivier Le Fevre, Caitlin M. Casey, Frank Bertoldi, Olivier Ilbert, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Brightness, PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, formation [galaxies], Astrophysics::High Energy Astrophysical Phenomena, galaxies [submillimeter], FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, galaxies: evolution, galaxies: formation, galaxies: starburst, galaxies: star formation, radio continuum: galaxies, submillimeter: galaxies, 0103 physical sciences, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, Diffusion (business), 010303 astronomy & astrophysics, evolution [galaxies], Astrophysics::Galaxy Astrophysics, Line (formation), Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], starburst [galaxies], 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, galaxies [radio continuum], Redshift, Galaxy, Supernova, Full width at half maximum, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), star formation [galaxies]
Abstract: We determine the radio size distribution of a large sample of 152 SMGs in COSMOS that were detected with ALMA at 1.3 mm. For this purpose, we used the observations taken by the VLA-COSMOS 3 GHz Large Project. One hundred and fifteen of the 152 target SMGs were found to have a 3 GHz counterpart. The median value of the major axis FWHM at 3 GHz is derived to be $4.6\pm0.4$ kpc. The radio sizes show no evolutionary trend with redshift, or difference between different galaxy morphologies. We also derived the spectral indices between 1.4 and 3 GHz, and 3 GHz brightness temperatures for the sources, and the median values were found to be $\alpha=-0.67$ and $T_{\rm B}=12.6\pm2$ K. Three of the target SMGs, which are also detected with the VLBA, show clearly higher brightness temperatures than the typical values. Although the observed radio emission appears to be predominantly powered by star formation and supernova activity, our results provide a strong indication of the presence of an AGN in the VLBA and X-ray-detected SMG AzTEC/C61. The median radio-emitting size we have derived is 1.5-3 times larger than the typical FIR dust-emitting sizes of SMGs, but similar to that of the SMGs' molecular gas component traced through mid-$J$ line emission of CO. The physical conditions of SMGs probably render the diffusion of cosmic-ray electrons inefficient, and hence an unlikely process to lead to the observed extended radio sizes. Instead, our results point towards a scenario where SMGs are driven by galaxy interactions and mergers. Besides triggering vigorous starbursts, galaxy collisions can also pull out the magnetised fluids from the interacting disks, and give rise to a taffy-like synchrotron-emitting bridge. This provides an explanation for the spatially extended radio emission of SMGs, and can also cause a deviation from the well-known IR-radio correlation., Comment: 32 pages (incl. 5 appendices), 17 figures, 7 tables; accepted for publication in A&A; abstract abridged for arXiv
Published: 2017
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16. VIMOS Ultra-Deep Survey (VUDS): IGM transmission towards galaxies with $2.5 < z < 5.5$ and the colour selection of high-redshift galaxies

Author: Daniela Vergani, Yannick Mellier, C. Lopez-Sanjuan, Nick Scoville, Paolo Cassata, Rajat M. Thomas, Laurence Tresse, S. Paltani, B. Ribeiro, Ricardo Amorín, Letizia P. Cassarà, Andrea Cimatti, Brian C. Lemaux, Bianca Garilli, Andrea Grazian, Stéphane Charlot, Margherita Talia, Laura Pentericci, D. Maccagni, Adriano Fontana, Nimish P. Hathi, G. Zamorani, V. Le Brun, Lidia Tasca, O. Ilbert, Peter Capak, A. Durkalec, Thierry Contini, E. Zucca, S. Bardelli, Daniel Schaerer, Anton M. Koekemoer, Marco Castellano, James Dunlop, Mauro Giavalisco, V. Sommariva, Marco Scodeggio, P. W. Wang, Jean-Gabriel Cuby, Mara Salvato, Yoshiaki Taniguchi, Eros Vanzella, O. Cucciati, S. de la Torre, Sotiria Fotopoulou, Janine Pforr, O. Le Fevre, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Thomas, R., Le Fèvre, O., Le Brun, V., Cassata, P., Garilli, B., Lemaux, B.C., Maccagni, D., Pentericci, L., Tasca, L.A.M., Zamorani, G., Zucca, E., Amorin, R., Bardelli, S., Cassarà, L., Castellano, M., Cimatti, A., Cucciati, O., Durkalec, A., Fontana, A., Giavalisco, M., Grazian, A., Hathi, N.P., Ilbert, O., Paltani, S., Pforr, J., Ribeiro, B., Schaerer, D., Scodeggio, M., Sommariva, V., Talia, M., Tresse, L., Vanzella, E., Vergani, D., Capak, P., Charlot, S., Contini, T., Cuby, J.G., De La Torre, S., Dunlop, J., Fotopoulou, S., Koekemoer, A., López-Sanjuan, C., Mellier, Y., Salvato, M., Scoville, N., Taniguchi, Y., Wang, P.W., Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille ( LAM ), Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d'étude spatiale des rayonnements ( CESR ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de recherche en astrophysique et planétologie ( IRAP ), and Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: QSOS, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Extinction (astronomy), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Cosmology: observation, Spectral line, galaxies: high-redshift, 0103 physical sciences, Galaxy formation and evolution, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Galaxy: evolution, Line-of-sight, 010308 nuclear & particles physics, Astronomy and Astrophysics, Cosmic variance, Astronomy and Astrophysic, Redshift, Galaxy, Cosmology: observations, Galaxies: high-redshift, Galaxy: formation, Large-scale structure of Universe, Space and Planetary Science, cosmology: observations, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: (arXiv abridged abstract) The observed UV rest-frame spectra of distant galaxies are the result of their intrinsic emission combined with absorption along the line of sight produced by the inter-galactic medium (IGM). Here we analyse the evolution of the mean IGM transmission Tr(Ly_alpha) and its dispersion along the line of sight for 2127 galaxies with 2.5= 4 compared to results from QSOs, but a degeneracy between dust extinction and IGM prevents to draw firm conclusions if the internal dust extinction for star-forming galaxies at z>4 takes a mean value significantly in excess of E(B-V)>0.15. Most importantly, we find a large dispersion of IGM transmission along the lines of sight towards distant galaxies with 68% of the distribution within 10 to 17% of the median value in delta z=0.5 bins, similar to what is found on the LOS towards QSOs. We demonstrate the importance of taking into account this large range of IGM transmission when selecting high redshift galaxies based on their colour properties (e.g. LBG or photometric redshift selection) or otherwise face a significant incompleteness in selecting high redshift galaxy populations., Comment: 15 pages, 11 figures, submitted to A&A
Published: 2017
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17. An high definition view of the COSMOS Wall at z~0.73

Author: E. Zucca, V. Petropoulou, Paolo Cassata, A. Iovino, G. Zamorani, Marco Scodeggio, Katarina Kovac, Lidia Tasca, Micol Bolzonella, O. Ilbert, S. Bardelli, Daniela Vergani, Alexis Finoguenov, Lucia Pozzetti, Masayuki Tanaka, O. Cucciati, and Mara Salvato
Subjects: Stellar mass, Large-scale structure of Universe, FOS: Physical sciences, Astrophysics, Galaxies: groups: general, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy group, 0103 physical sciences, Galaxy formation and evolution, Range (statistics), 010303 astronomy & astrophysics, Galaxies: evolution, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::Galaxy Astrophysics, Physics, Mass distribution, 010308 nuclear & particles physics, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, 13. Climate action, Astrophysics of Galaxies (astro-ph.GA), Small Magellanic Cloud
Abstract: We present a study of a large filamentary structure at z~0.73 in the field of the COSMOS survey, the so-called COSMOS Wall. This structure encompasses a comprehensive range of environments from a dense cluster and a number of galaxy groups to filaments, less dense regions, and adjacent voids. It thus provides a valuable laboratory for the accurate mapping of environmental effects on galaxy evolution at a look-back time of ~6.5 Gyr, when the Universe was roughly half its present age. We performed deep spectroscopic observations with VIMOS at VLT of a K-band selected sample of galaxies in this complex structure, building a sample of galaxies complete in galaxy stellar mass down to a lower limit of log(M/M_sun)~ 9.8, which is significantly deeper than previously available data. Thanks to its location within the COSMOS survey, each galaxy benefits from a wealth of ancillary information. In this paper we detail the survey strategy and weighting scheme adopted to account for the biases introduced by the photometric pre-selection of our targets. We present our galaxy stellar mass and rest-frame magnitudes estimates together with a group catalog obtained with our new data and their member galaxies color/mass distribution. Owing to to our new sample we can perform a detailed, high definition mapping of the complex COSMOS Wall structure. The sharp environmental information, coupled with high quality spectroscopic information and rich ancillary data available in the COSMOS field, enables a detailed study of galaxy properties as a function of local environment in a redshift slice where environmental effects are important, and in a stellar mass range where mass and environment driven effects are both at work., 19 pages, 16 figures, A&A accepted
Published: 2016

18. The COSMOS2015 Catalog: Exploring the 1 <z <6 Universe with Half a Million Galaxies

Author: M. Stockmann, Stefano Marchesi, Vernesa Smolčić, O. Le Fèvre, Mattia Vaccari, Anton M. Koekemoer, Francesca Civano, Johan P. U. Fynbo, Bo Milvang-Jensen, Lidia Tasca, David B. Sanders, Sune Toft, Bau-Ching Hsieh, James Dunlop, Paolo Cassata, Mara Salvato, Lihwai Lin, N. Z. Scoville, John D. Silverman, H. J. McCracken, Johannes Zabl, Simon J. Lilly, D. Le Borgne, Jeyhan S. Kartaltepe, Christophe Pichon, Alexie Leauthaud, Peter Capak, O. Ilbert, Guenther Hasinger, Yu-Yen Chang, Karina Caputi, I. Davidzon, E. Le Floc'h, Jean Coupon, Clotilde Laigle, Yoshiaki Taniguchi, Herve Aussel, Astronomy, Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Institute for Astronomy [Honolulu], University of Hawai‘i [Mānoa] (UHM), Kavli Institute for the Physics and Mathematics of the Universe [Tokyo] (Kavli IPMU), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo (UTokyo)-The University of Tokyo (UTokyo), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], SUPA, Institute for Astronomy, University of Edinburgh, Space Telescope Science Institute (STSci), Ecosystèmes lagunaires : organisation biologique et fonctionnement (ECOLAG), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS), California Institute of Technology (CALTECH), Institute of Astronomy [ETH Zürich], Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Dark Cosmology Centre (DARK), Niels Bohr Institute [Copenhagen] (NBI), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), Max-Planck-Institut für Extraterrestrische Physik (MPE), Excellence Cluster Universe, excellence cluster centre, Faculty of Science and Engineering [Higashiosaka], Kindai University, ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011), ANR-10-LABX-0063,ILP,Institute Lagrange of Paris(2010), ANR-13-BS05-0005,spin(e),L'origine cosmique de la séquence de Hubble(2013), European Project: 278202,EC:FP7:ERC,ERC-2011-StG_20101014,EGGS(2011), European Project: 648179,H2020,ERC-2014-CoG,ConTExt(2015), European Project: 0337595(2004), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH), Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Faculty of Science and Engineering [Osaka], ANR-11-IDEX-0004-02/11-IDEX-0004,SUPER,SUPER(2011), ANR-10-LABX-63,ANR-10-LABX-63, ANR-13-BS05-0005,spin(e),L’origine cosmique de la séquence de Hubble(2013), ITA, USA, GBR, FRA, and DEU
Subjects: PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, media_common.quotation_subject, observational [methods], Field (mathematics), Astrophysics, 01 natural sciences, photometric [techniques], techniques: photometric, galaxies: high-redshift, 0103 physical sciences, Galaxy formation and evolution, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, 010303 astronomy & astrophysics, evolution [galaxies], media_common, Photometric redshift, Physics, 010308 nuclear & particles physics, Sigma, Astronomy and Astrophysics, AB magnitude, Astrophysics - Astrophysics of Galaxies, Universe, Redshift, Galaxy, galaxies: photometry, Space and Planetary Science, photometry [galaxies], methods: observational, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], galaxies: evolution, catalogs, catalogs, galaxies: evolution, galaxies: high-redshift, galaxies: photometry, methods: observational, techniques: photometric, high-redshift [galaxies], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present the COSMOS2015 catalog which contains precise photometric redshifts and stellar masses for more than half a million objects over the 2deg$^{2}$ COSMOS field. Including new $YJHK_{\rm s}$ images from the UltraVISTA-DR2 survey, $Y$-band from Subaru/Hyper-Suprime-Cam and infrared data from the Spitzer Large Area Survey with the Hyper-Suprime-Cam Spitzer legacy program, this near-infrared-selected catalog is highly optimized for the study of galaxy evolution and environments in the early Universe. To maximise catalog completeness for bluer objects and at higher redshifts, objects have been detected on a $\chi^{2}$ sum of the $YJHK_{\rm s}$ and $z^{++}$ images. The catalog contains $\sim 6\times 10^5$ objects in the 1.5 deg$^{2}$ UltraVISTA-DR2 region, and $\sim 1.5\times 10^5$ objects are detected in the "ultra-deep stripes" (0.62 deg$^{2}$) at $K_{\rm s}\leq 24.7$ (3$\sigma$, 3", AB magnitude). Through a comparison with the zCOSMOS-bright spectroscopic redshifts, we measure a photometric redshift precision of $\sigma_{\Delta z/(1+z_s)}$ = 0.007 and a catastrophic failure fraction of $\eta=0.5$%. At $3, Comment: Accepted for publication in ApJ
Published: 2016
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19. The intriguing life of star-forming galaxies in the redshift range 1 ≤ z ≤ 2 using MASSIV

Author: L. Paioro, Frederic Bournaud, Lidia Tasca, J. Moultaka, V. Perret, Thierry Contini, Daniela Vergani, Bianca Garilli, B. Epinat, C. Divoy, J. Queyrel, C. López-Sanjuan, Markus Kissler-Patig, Laurence Tresse, O. Le Fèvre, and P. Amram
Subjects: Physics, education.field_of_study, Range (particle radiation), Population, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Star (graph theory), Rotation, Galaxy, Redshift, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, education, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: MASSIV (Massiv Assembly Survey with SINFONI in VVDS) is an ESO large program which consists of 84 star-forming galaxies, spanning in a wide range of stellar masses, observed with the IFU SINFONI on the VLT, in the redshift range 1 < z < 2. To be representative of the normal galaxy population, the sample has been selected from a well-defined, complete and representative parent sample. The kinematics of individual galaxies reveals that 58% of the galaxies are slow rotators, which means that a high fraction of these galaxies should probably be formed through major merger processes which might have produced gaseous thick or spheroidal structures supported by velocity dispersion rather than by rotation. Computations on the major merger rate from close pairs indicate that a typical star-forming galaxy underwent ~0.4 major mergers since ~9.5 Gyr, showing that merging is a major process driving mass assembly into the red sequence galaxies. These objects are also intriguing due to the fact that more than one galaxy over four is more metal-rich in its outskirts than in its center., Comment: Proceedings IAU Symposium No. 295, 2013 (5 pages, 2 figures)
Published: 2012
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20. The COSMOS density field: a reconstruction using both weak lensing and galaxy distributions

Author: Graziano Coppa, Jean-Paul Kneib, Alvio Renzini, S. Lilly, O. Le Fèvre, C. M. Carollo, M. Mignoli, C. López-Sanjuan, E. Zucca, A. Iovino, Jeffrey M. Silverman, Niraj Welikala, F. Lamareille, J. F. Le Borgne, Masayuki Tanaka, Angela Bongiorno, A. Koekoemoer, Karina Caputi, S. de la Torre, H. J. McCracken, K. Kovac, P. Kampczyk, Olga Cucciati, Rongmon Bordoloi, Richard Massey, Bianca Garilli, R. Pello, Preethi Nair, P. Franzetti, A. Cappi, Micol Bolzonella, Andrea Cimatti, V. Mainieri, Adam Amara, S. Bardelli, E. Perez Montero, Christian Maier, Luke A. Barnes, C. Knobel, Thierry Contini, G. Zamorani, Michele Moresco, Lidia Tasca, M. Scodeggio, Lucia Pozzetti, Daniela Vergani, V. Presotto, L. de Ravel, Laurence Tresse, Y. Peng, V. Le Brun, and Jason Rhodes
Subjects: Physics, 010308 nuclear & particles physics, Dark matter, Gaussian blur, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Redshift, Galaxy, symbols.namesake, Space and Planetary Science, 0103 physical sciences, symbols, Entropy (information theory), 010303 astronomy & astrophysics, Scaling, Weak gravitational lensing, Smoothing
Abstract: The COSMOS field has been the subject of a wide range of observations, with a number of studies focusing on reconstructing the 3D dark matter density field. Typically, these studies have focused on one given method or tracer. In this paper, we reconstruct the distribution of mass in the COSMOS field out to a redshift z=1 by combining Hubble Space Telescope weak lensing measurements with zCOSMOS spectroscopic measurements of galaxy clustering. The distribution of galaxies traces the distribution of mass with high resolution (particularly in redshift, which is not possible with lensing), and the lensing data empirically calibrates the mass normalisation (bypassing the need for theoretical models). Two steps are needed to convert a galaxy survey into a density field. The first step is to create a smooth field from the galaxy positions, which is a point field. We investigate four possible methods for this: (i) Gaussian smoothing, (ii) convolution with truncated isothermal sphere, (iii) fifth nearest neighbour smoothing and (iv) a muliti-scale entropy method. The second step is to rescale this density field using a bias prescription. We calculate the optimal bias scaling for each method by comparing predictions from the smoothed density field with the measured weak lensing data, on a galaxy-by-galaxy basis. In general, we find scale-independent bias for all the smoothing schemes, to a precision of 10%. For the nearest neighbour smoothing case, we find the bias to be 2.51\pm 0.25. We also find evidence for a strongly evolving bias, increasing by a factor of ~3.5 between redshifts 0
Published: 2012
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21. Where is the Light? Tracing the Evolution of Bulges and Disks since z ~ 0.8

Author: Laurence Tresse and Lidia Tasca
Subjects: Physics, Field (physics), media_common.quotation_subject, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Redshift, Galaxy, Universe, Luminosity, Space and Planetary Science, Bulge, Galaxy formation and evolution, Astrophysics::Galaxy Astrophysics, media_common, Luminosity function (astronomy)
Abstract: The chronology of galactic bulge and disk formation is studied by analysing the relative contributions of these components to the B band rest–frame luminosity density (LD) at two different cosmological epochs. The luminosity function (LF) of the bulge and disk components at z ~ 0.8 is computed on a galaxy subsample of the final zCOSMOS “bright” catalogue of roughly 20,000 objects with spectroscopic redshift in the COSMOS field. The comparison is then performed on galaxies in the local universe. Our preliminary results show that the LD in the disk component strongly decreases from ~ 80% at z ~ 0.8 to ~ 50% at z = 0, the bulges having a specular behaviour. The observational constraints provided in this work are aimed to discriminate among competing scenarios of galaxy formation and evolution. An appropriate comparison with hydrodynamical semianalytical models will be considered in a future study to understand further the formation and evolution of galaxies.
Published: 2010
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22. Understanding the shape of the galaxy two-point correlation function at z ≃ 1 in the COSMOS field

Author: Thierry Contini, E. Zucca, Preethi Nair, G. Zamorani, Olivier Ilbert, C. Knobel, A. Iovino, N. Z. Scoville, L. de Ravel, V. Mainieri, J. F. Le Borgne, S. Bardelli, Daniela Vergani, J. P. Kneib, M. Scodeggio, Andrea Cimatti, O. Le Fèvre, Lidia Tasca, P. Kampczyk, P. Memeo, V. Le Brun, Paolo Cassata, Graziano Coppa, R. Pello, Olga Cucciati, D. Bottini, David S Sanders, Y. Peng, Simon J. Lilly, Karina Caputi, Masayuki Tanaka, Enrique Pérez-Montero, Roberto Scaramella, K. Kovac, A. Cappi, Micol Bolzonella, Alvio Renzini, Pascal Oesch, S. de la Torre, Laurence Tresse, Lucia Pozzetti, C. M. Carollo, Ummi Abbas, Angela Bongiorno, Anton M. Koekemoer, Luigi Guzzo, V. Presotto, E. Ricciardelli, Niraj Welikala, John D. Silverman, F. Lamareille, H. J. McCracken, Bianca Garilli, B. Meneux, P. Franzetti, D. Maccagni, M. Mignoli, M. Fumana, Cristiano Porciani, Christian Maier, Christian Marinoni, and Alexie Leauthaud
Subjects: Physics, Field (physics), 010308 nuclear & particles physics, Dark matter, Astronomy and Astrophysics, Probability density function, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Galaxy, Redshift, Correlation function, Space and Planetary Science, 0103 physical sciences, Halo, Density contrast, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We investigate how the shape of the galaxy two-point correlation function as measured in the zCOSMOS survey depends on local environment, quantified in terms of the density contrast on scales of 5 Mpc/h. We show that the flat shape previously observed at redshifts between z=0.6 and z=1 can be explained by this volume being simply 10% over-abundant in high-density environments, with respect to a Universal density probability distribution function. When galaxies corresponding to the top 10% tail of the distribution are excluded, the measured w_p(r_p) steepens and becomes indistinguishable from LCDM predictions on all scales. This is the same effect recognised by Abbas & Sheth in the SDSS data at z~0 and explained as a natural consequence of halo-environment correlations in a hierarchical scenario. Galaxies living in high-density regions trace dark matter halos with typically higher masses, which are more correlated. If the density probability distribution function of the sample is particularly rich in high-density regions because of the variance introduced by its finite size, this produces a distorted two-point correlation function. We argue that this is the dominant effect responsible for the observed "peculiar" clustering in the COSMOS field.
Published: 2010
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23. First Data Release of the COSMOS Ly α Mapping and Tomography Observations: 3D Ly α Forest Tomography at 2.05 < z < 2.55

Author: Thomas Müller, Jeyhan S. Kartaltepe, Martin White, Joseph F. Hennawi, Karl Glazebrook, Andreu Font-Ribera, Mara Salvato, J. Xavier Prochaska, Brian C. Lemaux, R. Michael Rich, G. G. Kacprzak, Olivier Le Fèvre, Lidia Tasca, Themiya Nanayakkara, Khee-Gan Lee, Christian Maier, Kim-Vy Tran, David J. Schlegel, D. B. Sanders, Alex Krolewski, Nao Suzuki, Peter Nugent, Anton M. Koekemoer, and Richard Pan
Subjects: Physics, Tomographic reconstruction, 010308 nuclear & particles physics, media_common.quotation_subject, Astronomy and Astrophysics, Quasar, Astrophysics, 01 natural sciences, Galaxy, Universe, Redshift, law.invention, Telescope, Space and Planetary Science, law, 0103 physical sciences, Tomography, 010303 astronomy & astrophysics, Spectrograph, media_common
Abstract: Author(s): Lee, KG; Krolewski, A; White, M; Schlegel, D; Nugent, PE; Hennawi, JF; Muller, T; Pan, R; Prochaska, JX; Font-Ribera, A; Suzuki, N; Glazebrook, K; Kacprzak, GG; Kartaltepe, JS; Koekemoer, AM; Le Fevre, O; Lemaux, BC; Maier, C; Nanayakkara, T; Rich, RM; Sanders, DB; Salvato, M; Tasca, L; Tran, KVH | Abstract: Faint star-forming galaxies at z ∼ 2-3 can be used as alternative background sources to probe the Lyα forest in addition to quasars, yielding high sightline densities that enable 3D tomographic reconstruction of the foreground absorption field. Here, we present the first data release from the COSMOS Lyα Mapping And Tomography Observations (CLAMATO) Survey, which was conducted with the LRIS spectrograph on the Keck I telescope. Over an observational footprint of 0.157 deg2 within the COSMOS field, we used 240 galaxies and quasars at 2.17 l z l 3.00, with a mean comoving transverse separation of , as background sources probing the foreground Lyα forest absorption at 2.05 l z l 2.55. The Lyα forest data was then used to create a Wiener-filtered tomographic reconstruction over a comoving volume of with an effective smoothing scale of . In addition to traditional figures, this map is also presented as a virtual-reality visualization and manipulable interactive figure. We see large overdensities and underdensities that visually agree with the distribution of coeval galaxies from spectroscopic redshift surveys in the same field, including overdensities associated with several recently discovered galaxy protoclusters in the volume. Quantitatively, the map signal-to-noise is over a 3 h -1Mpc top-hat kernel based on the variances estimated from the Wiener filter. This data release includes the redshift catalog, reduced spectra, extracted Lyα forest pixel data, and reconstructed tomographic map of the absorption. These can be downloaded from Zenodo (10.5281/zenodo.1292459).
Published: 2018
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24. Detection of z ∼ 2.3 Cosmic Voids from 3D Lyα Forest Tomography in the COSMOS Field

Author: Martin White, Khee-Gan Lee, Lidia Tasca, Peter Nugent, R. Michael Rich, Anton M. Koekemoer, Brian C. Lemaux, Casey W. Stark, Zarija Lukić, Joseph F. Hennawi, Alex Krolewski, Mara Salvato, Olivier Le Fèvre, Christian Maier, and David J. Schlegel
Subjects: Physics, COSMIC cancer database, Field (physics), 010308 nuclear & particles physics, Astronomy and Astrophysics, Quasar, Astrophysics, 01 natural sciences, Redshift, Spectral line, Galaxy, Space and Planetary Science, 0103 physical sciences, Tomography, Absorption (electromagnetic radiation), 010303 astronomy & astrophysics
Abstract: Author(s): Krolewski, A; Lee, KG; White, M; Hennawi, JF; Schlegel, DJ; Nugent, PE; Lukic, Z; Stark, CW; Koekemoer, AM; Fevre, OL; Lemaux, BC; Maier, C; Rich, RM; Salvato, M; Tasca, L | Abstract: We present the most distant detection of cosmic voids (z ∼ 2.3) and the first detection of three-dimensional voids in the Lyα forest. We used a 3D tomographic map of the absorption with an effective comoving spatial resolution of 2.5 h -1 Mpc and a volume of 3.15 105 h -3 Mpc3, which was reconstructed from moderate-resolution Keck I/LRIS spectra of 240 background Lyman-break galaxies and quasars in a 0.16 deg2 footprint in the COSMOS field. Voids were detected using a spherical overdensity finder calibrated from hydrodynamical simulations of the intergalactic medium (IGM). This allows us to identify voids in the IGM corresponding to voids in the underlying matter density field, yielding a consistent volume fraction of voids in both data (19.5%) and simulations (18.2%). We fit excursion set models to the void radius function and compare the radially averaged stacked profiles of large voids (r g 5 h -1 Mpc) to stacked voids in mock observations and the simulated density field. Comparing with 432 coeval galaxies with spectroscopic redshifts in the same volume as the tomographic map, we find that the tomography-identified voids are underdense in galaxies by 5.95σ compared to random cells.
Published: 2018
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25. THE 10k zCOSMOS: MORPHOLOGICAL TRANSFORMATION OF GALAXIES IN THE GROUP ENVIRONMENT SINCEz∼1

Author: E. Ricciardelli, A. Cappi, Lucia Pozzetti, Micol Bolzonella, Daniela Vergani, Thierry Contini, C. M. Carollo, Alvio Renzini, Laurence Tresse, Y. Peng, A. Iovino, Luigi Guzzo, Angela Bongiorno, John D. Silverman, V. Mainieri, E. Zucca, J. F. Le Borgne, Alexis Finoguenov, Graziano Coppa, Claudia Scarlata, V. Le Brun, Paolo Cassata, P. Oesch, Anton M. Koekemoer, Mark Sargent, L. de Ravel, F. Lamareille, Lidia Tasca, S. Bardelli, P. Memeo, S. J. Lilly, P. Kampczyk, Bianca Garilli, N. Z. Scoville, C. Knobel, Jean-Paul Kneib, Ummi Abbas, O. Le Fèvre, D. Maccagni, R. Pello, Karina Caputi, D. Bottini, G. Zamorani, H. J. McCracken, M. Scodeggio, P. Franzetti, Olga Cucciati, Alessandro Cimatti, Masayuki Tanaka, B. Meneux, E. Perez Montero, S. de la Torre, M. Mignoli, Christian Maier, Christian Marinoni, M. Fumana, Cristiano Porciani, Alexie Leauthaud, Roberto Scaramella, K. Kovac, AUTRES, Università di Bologna, Dipartimento di Astronomia, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), University of Chicago, Dipartimento di Fisica, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), INAF- Milano, Institute of Astronomy [ETH Zürich], Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), INAF - Osservatorio Astronomico di Brera (OAB), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (LATT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Glycosciences Laboratory, Imperial College School of Medicine, Tokai University, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), Space Telescope Science Institute (STSci), Centre de Physique Théorique - UMR 6207 (CPT), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), California Institute of Technology (CALTECH), K. Kovac, S. J. Lilly, C. Knobel, M.Bolzonella, A. Iovino, C.M. Carollo, C. Scarlata, M. Sargent, O. Cucciati, G. Zamorani, L. Pozzetti, L.A.M. Tasca, M. Scodeggio, P. Kampczyk, Y. Peng, P. Oesch, E. Zucca, A. Finoguenov, T. Contini, J.-P. Kneib, O. Le Fevre, V. Mainieri, A. Renzini, S. Bardelli, A. Bongiorno, K. Caputi, G. Coppa, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello, E. Perez Montero, E. Ricciardelli, J.D. Silverman, M. Tanaka, L. Tresse, D. Vergani, U. Abba, D. Bottini, A. Cappi, P. Cassata, A. Cimatti, M. Fumana, L. Guzzo, A.M. Koekemoer, A. Leauthaud, D. Maccagni, C. Marinoni, H. J. McCracken, P. Memeo, B. Meneux, C. Porciani, R. Scaramella, N.Z. Scoville, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Astronomy
Subjects: Galaxies: Structure, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010504 meteorology & atmospheric sciences, Stellar mass, Population, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Luminosity, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Galaxies: Evolution, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, education.field_of_study, COSMIC cancer database, Group (mathematics), Star formation, Galaxies: High-redshift, Astronomy and Astrophysics, Redshift survey, Galaxy, Space and Planetary Science, Mass function, Galaxies: Clusters: General, Galaxies: Luminosity function, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We study the evolution of galaxies inside and outside of the group environment since z=1 using a large well defined set of groups and galaxies from the zCOSMOS-bright redshift survey in the COSMOS field. The fraction of galaxies with early-type morphologies increases monotonically with M_B luminosity and stellar mass and with cosmic epoch. It is higher in the groups than elsewhere, especially at later epochs. The emerging environmental effect is superposed on a strong global mass-driven evolution, and at z~0.5 and log(M*/Msol)~10.2, the "effect" of group environment is equivalent to (only) about 0.2 dex in stellar mass or 2 Gyr in time. The stellar mass function of galaxies in groups is enriched in massive galaxies. We directly determine the transformation rates from late to early morphologies, and for transformations involving colour and star formation indicators. The transformation rates are systematically about twice as high in the groups as outside, or up to 3-4 times higher correcting for infall and the appearance of new groups. The rates reach values, for masses around the crossing mass 10^10.5 Msol, as high as (0.3-0.7)/Gyr in the groups, implying transformation timescales of 1.4-3 Gyr, compared with less than 0.2/Gyr, i.e. timescales >5 Gyr, outside of groups. All three transformation rates decrease at higher stellar masses, and must decrease also at the lower masses below 10^10 Msol which we cannot well probe. The rates involving colour and star formation are consistently higher than those for morphology, by a factor of about 50%. Our conclusion is that the transformations which drive the evolution of the overall galaxy population since z~1 must occur at a rate 2-4 times higher in groups than outside of them., 21 pages, 13 figures, submitted to ApJ
Published: 2010
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26. Integral field spectroscopy with SINFONI of VVDS galaxies

Author: Philippe Amram, L. Tresse, O. Le Fèvre, Daniela Vergani, Lidia Tasca, Thierry Contini, Bianca Garilli, Benoît Epinat, and J. Queyrel
Subjects: Physics, education.field_of_study, 010308 nuclear & particles physics, Star formation, Population, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Accretion (astrophysics), Galaxy, Redshift, Space and Planetary Science, Galaxy group, 0103 physical sciences, Galaxy formation and evolution, Astrophysics::Earth and Planetary Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: Context. Identifying the main processes of galaxy assembly at high redshifts is still a major issue in understanding galaxy formation and evolution at early epochs in the history of the Universe.Aims. This work aims to provide a first insight into the dynamics and mass assembly of galaxies at redshifts , the early epoch just before the sharp decrease of the cosmic star formation rate.Methods. We use the near-infrared integral field spectrograph SINFONI on the ESO-VLT under 0.65´´ seeing to obtain spatially resolved spectroscopy on nine emission line galaxies with from the VIMOS VLT Deep Survey. We derive the velocity fields and velocity dispersions on kpc scales using the Hα emission line.Results. Out of the nine star-forming galaxies, we find that galaxies are distributed in three groups: two galaxies can be well reproduced by a rotating disk, three systems can be classified as major mergers and four galaxies show disturbed dynamics and high velocity dispersion. We argue that there is evidence for hierarchical mass assembly from major merging, with most massive galaxies with subject to at least one major merger over a 3 Gyr period as well as for continuous accretion feeding strong star formation.Conclusions. These results point towards a galaxy formation and assembly scenario which involves several processes, possibly acting in parallel, with major mergers and continuous gas accretion playing a major role. Well controlled samples representative of the bulk of the galaxy population at this key cosmic time are necessary to make further progress.
Published: 2009
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27. The Dependence of Star Formation Activity on Stellar Mass Surface Density and Sersic Index in zCOSMOS Galaxies at 0.5 <z <0.9 Compared with SDSS Galaxies at 0.04 <z <0.08

Author: M. T. Sargent, D. Bottini, Daniela Vergani, P. Franzetti, Olga Cucciati, Andrea Cimatti, A. Iovino, Simon J. Lilly, Christian Maier, A. Cappi, J. F. Le Borgne, S. de la Torre, Christian Marinoni, Karina Caputi, C. Knobel, U. Abbas, L. de Ravel, Y. Peng, E. Ricciardelli, Alvio Renzini, C. Halliday, M. Scodeggio, Claudia Scarlata, V. Le Brun, M. Mignoli, Angela Bongiorno, Anton M. Koekemoer, Pascal Oesch, A. Leauthaud, S. Bardelli, Cristiano Porciani, P. Kampczyk, Laurence Tresse, Lidia Tasca, Thierry Contini, B. Meneux, Paolo Cassata, Masayuki Tanaka, Bianca Garilli, P. Memeo, V. Mainieri, Roser Pello, Lucia Pozzetti, C. M. Carollo, O. Le Fèvre, M. Bolzonella, G. Zamorani, John D. Silverman, Jean-Paul Kneib, E. Perez Montero, H. J. McCracken, Graziano Coppa, D. Maccagni, E. Zucca, Luigi Guzzo, F. Lamareille, M. Fumana, Roberto Scaramella, K. Kovac, INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre de Physique Théorique - UMR 6207 (CPT), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Astronomy, Maier C., Lilly S. J., Zamorani G., Scodeggio M., Lamareille F., Contini T., Sargent M. T., Scarlata C., Oesch P., Carollo C. M., Le Fèvre O., Renzini A., Kneib J.-P., Mainieri V., Bardelli S., Bolzonella M., Bongiorno A., Caputi K., Coppa G., Cucciati O., de la Torre S., de Ravel L., Franzetti P., Garilli B., Iovino A., Kampczyk P., Knobel C., Kova&#269, K., Le Borgne J.-F., Le Brun V., Mignoli M., Pello R., Peng Y., Montero E. Perez, Ricciardelli E., Silverman J. D., Tanaka M., Tasca L., Tresse L., Vergani D., Zucca E., Abbas U., Bottini D., Cappi A., Cassata P., Cimatti A., Fumana M., Guzzo L., Halliday C., Koekemoer A. M., Leauthaud A., Maccagni D., Marinoni C., McCracken H. J., Memeo P., Meneux B., Porciani C., Pozzetti L., and Scaramella R.
Subjects: Surface (mathematics), 010504 meteorology & atmospheric sciences, Stellar mass, Population, PHYSICAL-PROPERTIES, POPULATION SYNTHESIS, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, galaxies: high-redshift, 0103 physical sciences, Galaxy formation and evolution, 10. No inequality, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, LOCAL UNIVERSE, Physics, EVOLUTION SURVEY COSMOS, REDSHIFT SURVEY, education.field_of_study, Galaxies: evolution, Galaxies: high-redshift, Astronomy and Astrophysics, Space and Planetary Science, FORMING GALAXIES, Star formation, ASSEMBLY HISTORY, DISK GALAXIES, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, LUMINOSITY FUNCTION, DIGITAL SKY SURVEY, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], galaxies: evolution, Surface mass, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: One of the key unanswered questions in the study of galaxy evolution is what physical processes inside galaxies drive the changes in the SFRs in individual galaxies that, taken together, produce the large decline in the global star-formation rate density (SFRD) to redshifts since z~2. Many studies of the SFR at intermediate redshifts have been made as a function of the integrated stellar mass of galaxies but these did not use information on the internal structural properties of the galaxies. In this paper we present a comparative study of the dependence of SFRs on the average surface mass densities (SigmaM) of galaxies of different morphological types up to z~1 using the zCOSMOS and SDSS surveys. The main findings about the evolution of these relatively massive galaxies are: 1) There is evidence that, for both SDSS ans zCOSMOS galaxies, the mean specific SFR within a given population (either disk-dominated or bulge-dominated) is independent of SigmaM; 2) The observed SSFR - SigmaM step-function relation is due, at all investigated redshifts, to the changing mix of disk-dominated and bulge-dominated galaxies as surface density increases and the strong difference in the average SSFR between disks and bulges. We also find a modest differential evolution in the size-mass relations of disk and spheroid galaxies; 3) The shape of the median SSFR - SigmaM relation is similar, but with median SSFR values that are about 5-6 times higher in zCOSMOS galaxies than for SDSS, across the whole range of SigmaM, and in both spheroid and disk galaxies. This increase matches that of the global SFRD of the Universe as a whole, emphasizing that galaxies of all types are contributing, proportionally, to the global increase in SFRD in the Universe back to these redshifts (abridged)., Comment: Published 2009 in ApJ, 694, 1099
Published: 2009
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28. (Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies III. Environments

Author: Sune Toft, Olivier Ilbert, Oskari Miettinen, H. J. McCracken, Dominik A. Riechers, Mara Salvato, Alexander Karim, G. Zamorani, Lidia Tasca, Vernesa Smolčić, Neven Tomičić, S. Marchesi, O. Le Fèvre, Clotilde Laigle, Ivan Delvecchio, Peter Capak, Alexis Finoguenov, Y.-K. Chiang, Brian C. Lemaux, N. Jurlin, Manuel Aravena, Eva Schinnerer, Francesca Civano, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire d'Astrophysique de Marseille ( LAM ), Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS ), Institut d'Astrophysique de Paris ( IAP ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: submillimeter: galaxies, Cosmology and Nongalactic Astrophysics (astro-ph.CO), PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, formation [galaxies], [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Dark matter, galaxies [submillimeter], FOS: Physical sciences, Astrophysics, 01 natural sciences, Physical cosmology, 0103 physical sciences, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, clusters: general [galaxies], galaxies: formation, 010303 astronomy & astrophysics, evolution [galaxies], James Clerk Maxwell Telescope, Physics, COSMIC cancer database, 010308 nuclear & particles physics, Plateau de Bure Interferometer, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Space and Planetary Science, galaxies: clusters: general, Astrophysics of Galaxies (astro-ph.GA), Millimeter, large-scale structure of Universe, galaxies: clusters: general, galaxies: evolution, galaxies: formation, large-scale structure of Universe, submillimeter: galaxies, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We study the environment of 23 submillimetre galaxies (SMGs) drawn from the JCMT/AzTEC 1.1mm S/N-limited sample in the COSMOS field, as well as 4 COSMOS SMGs at z_spec>4.5, and 1 at z_spec=2.49, yielding a sample of 28 SMGs. We search for overdensities using the COSMOS photometric redshifts based on over 30 UV-NIR photometric bands, reaching an accuracy of sigma(Delta z/(1+z))=0.0067 (0.0155) at z3.5). To identify overdensities we apply the Voronoi tessellation analysis, and estimate the overdensity estimator delta_g as a function of distance from the SMG and/or overdensity center. We test and validate our approach via simulations, X-ray detected groups, and spectroscopic verifications using VUDS and zCOSMOS catalogues showing that even with photometric redshifts in COSMOS we can efficiently retrieve overdensities out to z~5. Our results yield that 11/23 (48%) JCMT/AzTEC 1.1mm SMGs occupy overdense environments. Considering the entire JCMT/AzTEC 1.1mm S/N>4 sample, and accounting for the expected fraction of spurious detections, yields that 35-61% of the SMGs in the S/N-limited sample occupy overdense environments. We perform an X-ray stacking analysis in the 0.5-2keV band using a 32" aperture and our SMG positions, and find statistically significant detections. For our z2] subsample we find an average flux of (4.0+/-0.8)x10^{-16} [(1.3+/-0.5)x10^{-16}] erg/s/cm^2 and a corresponding total mass of M_200 = 2.8x10^{13} [2x10^{13}] MSol. Our results suggest a higher occurrence of SMGs occupying overdense environments at z>3, than at z, 21 pages, 3 figures, 8 tables; accepted for publication in A&A
Published: 2016
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29. Gas Fraction and Depletion Time of Massive Star Forming Galaxies at $z \sim$ 3.2: No Change in Global Star Formation Process out to $z>$ 3

Author: Francesca Civano, O. LeFevre, Mark Sargent, Benjamin Magnelli, Lidia Tasca, Alexander Karim, Paolo Cassata, Brent Groves, Vernesa Smolčić, Pascal Oesch, Eva Schinnerer, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire d'Astrophysique de Marseille ( LAM ), and Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Stellar mass, Infrared, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Flattening, galaxies: high-redshift, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, QB, Physics, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, galaxies: evolution, galaxies: ISM, submillimeter: ISM, Space and Planetary Science, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Cosmic time, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The observed evolution of the gas fraction and its associated depletion time in main sequence (MS) galaxies provides insights on how star formation proceeds over cosmic time. We report ALMA detections of the rest-frame $\sim$300$\mu$m continuum observed at 240 GHz for 45 massive ($\rm \langle log(M_{\star}(M_{\odot}))\rangle=10.7$), normal star forming ($\rm \langle log(sSFR(yr^{-1}))\rangle=-8.6$), i.e. MS, galaxies at $\rm z\approx3.2$ in the COSMOS field. From an empirical calibration between cold neutral, i.e. molecular and atomic, gas mass $\rm M_{gas}$ and monochromatic (rest-frame) infrared luminosity, the gas mass for this sample is derived. Combined with stellar mass $\rm M_{\star}$ and star formation rate (SFR) estimates (from {\sc MagPhys} fits) we obtain a median gas fraction of $\rm \mu_{gas}=M_{gas}/M_{\star}=1.65_{-0.19}^{+0.18}$ and a median gas depletion time $\rm t_{depl.}(Gyr)=M_{gas}/SFR=0.68_{-0.08}^{+0.07}$; correction for the location on the MS will only slightly change the values. The reported uncertainties are the $\rm 1\sigma$ error on the median. Our results are fully consistent with the expected flattening of the redshift evolution from the 2-SFM (2 star formation mode) framework that empirically prescribes the evolution assuming a universal, log-linear relation between SFR and gas mass coupled to the redshift evolution of the specific star formation rate (sSFR) of main sequence galaxies. While $\rm t_{dep.}$ shows only a mild dependence on location within the MS, a clear trend of increasing $\rm \mu_{gas}$ across the MS is observed (as known from previous studies). Further we comment on trends within the MS and (in)consistencies with other studies., Comment: 24 pages plus 16 pages references and 5 figures, ApJ, accepted
Published: 2016
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30. Limits on the LyC signal from z ~ 3 sources with secure redshift and HST coverage in the E-CDFS field

Author: R. Thomas, Brian C. Lemaux, E. Zucca, Nimish P. Hathi, Mario Nonino, Paola Santini, D. Maccagni, Lidia Tasca, G. Zamorani, V. Le Brun, Paolo Cassata, Mauro Giavalisco, Ricardo Amorín, Andrea Grazian, Bianca Garilli, Eric Gawiser, Lucia Guaita, Eros Vanzella, L. Pentericci, Angela Bongiorno, Marco Castellano, O. Le Fèvre, E. Merlin, S. Bardelli, S. De Barros, Adriano Fontana, INAF - Osservatorio Astronomico di Roma (OAR), Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astronomico di Bologna (OAB), INAF - Osservatorio Astronomico di Trieste (OAT), Department of Astronomy [Amherst], University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS)-University of Massachusetts System (UMASS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Departamento de Fisica y Astronomia [Valparaiso], Universidad de Valparaiso [Chile], INAF-IASF Milano, Department of Physics and Astronomy [Piscataway], Rutgers, The State University of New Jersey [New Brunswick] (RU), Rutgers University System (Rutgers)-Rutgers University System (Rutgers), European Project: 268107,EC:FP7:ERC,ERC-2010-AdG_20100224,EARLY(2011), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: Active galactic nucleus, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Continuum (design consultancy), Flux, FOS: Physical sciences, Context (language use), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Photometry (optics), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Galaxies: star formation, 010308 nuclear & particles physics, Astronomy and Astrophysics, Galaxies: active, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Space and Planetary Science, 13. Climate action, Astrophysics of Galaxies (astro-ph.GA), Chandra Deep Field South, Astrophysics::Earth and Planetary Astrophysics
Abstract: Aim: We aim to measure the LyC signal from a sample of sources in the Chandra deep field south. We collect star-forming galaxies (SFGs) and active galactic nuclei (AGN) with accurate spectroscopic redshifts, for which Hubble Space Telescope (HST) coverage and multi-wavelength photometry are available. Method: We selected a sample of about 200 sources at z~3. Taking advantage of HST resolution, we applied a careful cleaning procedure and rejected sources showing nearby clumps with different colours, which could be lower-z interlopers. Our clean sample consisted of 86 SFGs (including 19 narrow-band selected Lya emitters) and 8 AGN (including 6 detected in X-rays). We measured the LyC flux from aperture photometry in four narrow-band filters covering wavelengths below a 912 A rest frame (3.11, Comment: Accepted for publication in A&A on Jan 5th, 2016
Published: 2016
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31. New constraints on the average escape fraction of Lyman continuum radiation in z~4 galaxies from the VIMOS Ultra Deep Survey (VUDS)

Author: Lidia Tasca, B. Ribeiro, V. Le Brun, Paolo Cassata, Adriano Fontana, Andrea Grazian, F. Marchi, O. Le Fèvre, Anton M. Koekemoer, S. Bardelli, D. Maccagni, Brian C. Lemaux, Eros Vanzella, G. Zamorani, Daniel Schaerer, L. Pentericci, Ricardo Amorín, Lucia Guaita, Bianca Garilli, E. Zucca, R. Thomas, Nimish P. Hathi, Marco Castellano, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Amorin Barbieri, Ricardo [0000-0001-5758-1000], Apollo - University of Cambridge Repository, and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Continuum (design consultancy), Flux, FOS: Physical sciences, Context (language use), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies: evolution, Galaxies: high-redshift, Galaxies: star formation, Astronomy and Astrophysics, Space and Planetary Science, 01 natural sciences, 0103 physical sciences, 010303 astronomy & astrophysics, Reionization, Astrophysics::Galaxy Astrophysics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Astrophysics of Galaxies (astro-ph.GA), Chandra Deep Field South, Equivalent width
Abstract: Determining the average fraction of Lyman continuum (LyC) photons escaping high redshift galaxies is essential for understanding how reionization proceeded in the z>6 Universe. We want to measure the LyC signal from a sample of sources in the Chandra Deep Field South (CDFS) and COSMOS fields for which ultra-deep VIMOS spectroscopy as well as multi-wavelength Hubble Space Telescope (HST) imaging are available. We select a sample of 46 galaxies at $z\sim 4$ from the VIMOS Ultra Deep Survey (VUDS) database, such that the VUDS spectra contain the LyC part of the spectra, that is, the rest-frame range $880-910\AA$. Taking advantage of the HST imaging, we apply a careful cleaning procedure and reject all the sources showing nearby clumps with different colours, that could potentially be lower-redshift interlopers. After this procedure, the sample is reduced to 33 galaxies. We measure the ratio between ionizing flux (LyC at $895\AA$) and non-ionizing emission (at $\sim 1500 \AA$) for all individual sources. We also produce a normalized stacked spectrum of all sources. Assuming an intrinsic average $L_{\nu}(1470)/L_{\nu}(895)$ of 3, we estimate the individual and average relative escape fraction. We do not detect ionizing radiation from any individual source, although we identify a possible LyC emitter with very high Ly$\alpha$ equivalent width (EW). From the stacked spectrum and assuming a mean transmissivity for the sample, we measure a relative escape fraction $f_{esc}^{rel}=0.09\pm0.04$. We also look for correlations between the limits in the LyC flux and source properties and find a tentative correlation between LyC flux and the EW of the Ly$\alpha$ emission line. Our results imply that the LyC flux emitted by $V=25-26$ star-forming galaxies at z$\sim$4 is at most very modest, in agreement with previous upper limits from studies based on broad and narrow band imaging., This work is supported by funding from the European Research Council Advanced Grant ERC–2010–AdG–268107–EARLY and by INAF Grants PRIN 2010, PRIN 2012 and PICS 2013. AC, OC, MT and VS acknowledge the grant MIUR PRIN 2010– 2011. This work is based on data products made available at the CESAM data center, Laboratoire d’Astrophysique de Marseille. R.A. acknowledges support from the ERC Advanced Grant 695671 'QUENCH'.
Published: 2016
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32. A robust morphological classification of high-redshift galaxies using support vector machines on seeing limited images

Author: Marc Huertas-Company, Lidia Tasca, O. Le Fèvre, G. Soucail, D. Rouan, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Departement de recherche SPAtiale (DESPA), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Observatoire de Paris - Site de Paris (OP), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées
Subjects: Physics, 010308 nuclear & particles physics, Generalization, Astrophysics (astro-ph), FOS: Physical sciences, galaxies: fundamental parameters, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, methods: data analysis, 01 natural sciences, Sample (graphics), Galaxy, Redshift, Luminosity, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Support vector machine, galaxies: high-redshift, Space and Planetary Science, 0103 physical sciences, Limit (mathematics), Completeness (statistics), 010303 astronomy & astrophysics, Algorithm
Abstract: We present a new non-parametric method to quantify morphologies of galaxies based on a particular family of learning machines called support vector machines. The method, that can be seen as a generalization of the classical CAS classification but with an unlimited number of dimensions and non-linear boundaries between decision regions, is fully automated and thus particularly well adapted to large cosmological surveys. The source code is available for download at http://www.lesia.obspm.fr/~huertas/galsvm.html To test the method, we use a seeing limited near-infrared ($K_s$ band, $2,16\mu m$) sample observed with WIRCam at CFHT at a median redshift of $z\sim0.8$. The machine is trained with a simulated sample built from a local visually classified sample from the SDSS chosen in the high-redshift sample's rest-frame (i band, $0.77\mu m$) and artificially redshifted to match the observing conditions. We use a 12-dimensional volume, including 5 morphological parameters and other caracteristics of galaxies such as luminosity and redshift. We show that a qualitative separation in two main morphological types (late type and early type) can be obtained with an error lower than 20% up to the completeness limit of the sample ($KAB\sim 22$) which is more than 2 times better that what would be obtained with a classical C/A classification on the same sample and indeed comparable to space data. The method is optimized to solve a specific problem, offering an objective and automated estimate of errors that enables a straightforward comparison with other surveys., Comment: 11 pages, 7 figures, 3 tables. Submitted to A&A. High resolution images are available on request
Published: 2007
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33. The 0.1 < z < 1.65 evolution of the bright end of the [ OII ] luminosity function

Author: Jean-Paul Kneib, Stephanie Escoffier, Jiali Wang, Jun Ma, Xu Zhou, Roland Bacon, David J. Schlegel, Eric Jullo, Laurence Tresse, Jian Ge, Michael Lesser, Anne Ealet, Yipeng Jing, Carlton M. Baugh, Timothée Delubac, Lidia Tasca, Xiaohui Fan, Donald P. Schneider, Zhou Fan, Tianmeng Zhang, Cedric G. Lacey, Olivier Ilbert, Jundan Nie, Johan Comparat, Christophe Yèche, Oliver Steele, Zhenyu Wu, Joel R. Brownstein, Nicholas P. Ross, Julien Zoubian, Hu Zou, Zhimin Zhou, Zhaoji Jiang, Stephane Arnouts, Johan Richard, Violeta Gonzalez-Perez, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute for Computational Cosmology (ICC), Durham University, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), University of Utah, University of Florida [Gainesville] (UF), Drexel University, Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Pennsylvania State University (Penn State), Penn State System, Institute of Cosmology and Gravitation, University of Portsmouth, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Steward Observatory (STEWARD OBSERVATORY), University of Arizona, National Astronomical Observatories [Beijing] (NAOC), Chinese Academy of Sciences [Beijing] (CAS), Shanghai Astronomical Observatory [Shanghai] (SHAO), Departamento de FisicaTeorica e IFT-UAM/CSIC, Universidad Autónoma de Madrid (UAM), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), EPFL Laboratoire d’astrophysique, Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), ANR-08-BLAN-0222,BOSS,Baryon Oscillation Spectroscopic Survey(2008), European Project: 336736,EC:FP7:ERC,ERC-2013-StG,CALENDS(2013), European Project: 290975,EC:FP7:ERC,ERC-2011-ADG_20110209,LIDA(2012), Universidad Autonoma de Madrid (UAM), and UAM. Departamento de Física Teórica
Subjects: luminosity function, mass function [Galaxies], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, evolution. [Galaxies], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Surveys, 01 natural sciences, Spectral line, statistics [Galaxies], surveys, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Emission spectrum, observations [Cosmology], 010303 astronomy & astrophysics, Spectrograph, galaxies: statistics, Astrophysics::Galaxy Astrophysics, Luminosity function (astronomy), Line (formation), Physics, 010308 nuclear & particles physics, Galaxies: luminosity function, mass function, Astrophysics::Instrumentation and Methods for Astrophysics, Física, Astronomy and Astrophysics, evolution [Galaxies], Astrophysics - Astrophysics of Galaxies, luminosity function [Galaxies], Galaxy, Redshift, Baryon, galaxies: luminosity function, Space and Planetary Science, mass function, Mass function, cosmology: observations, Catalogs, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], catalogs, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Astronomy and Astrophysics 575 (2015): A40 reproduced with permission from Astronomy & Astrophysics, © ESO, We present the [OII] (λλ3729,3726) luminosity function measured in the redshift range 0.1, J.C. acknowledges financial support from MINECO (Spain) under project number AYA2012-31101. J.R. acknowledges support from the ERC starting grant CALENDS. J.P.K. and T.D. acknowledge support from the LIDA ERC advanced grant. Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The BOSS French Participation Group is supported by Agence Nationale de la Recherche under grant ANR-08-BLAN-0222. This equipment was funded by BIS National Einfrastructure capital grant ST/K00042X/1, STFC capital grant ST/H008519/1, and STFC DiRAC Operations grant ST/K003267/1 and Durham University. DiRAC is part of the National E-Infrastructure. V.G.P. acknowledges support from a European Research Council Starting Grant (DEGAS-259586) and the Science and Technology Facilities Council (grant number ST/F001166/1)
Published: 2015
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34. Discovery of Massive, Mostly Star-formation Quenched Galaxies with Extremely Large Lyman-alpha Equivalent Widths at z ~ 3

Author: Peter Capak, Marcella Carollo, Masakazu A. R. Kobayashi, Kartik Sheth, Nick Scoville, Sune Toft, Katarina Kovac, Eva Schinnerer, Laurence Tresse, Richard E. Griffiths, Olivier Le Fèvre, Tohru Nagao, Anton M. Koekemoer, David B. Sanders, H. J. McCracken, Olivier Ilbert, Francesca Civano, Simon J. Lilly, Alvio Renzini, Hai Fu, Yasuhiro Shioya, Yoshiaki Taniguchi, Lidia Tasca, and Masaru Kajisawa
Subjects: Physics, Active galactic nucleus, Star formation, Continuum (design consultancy), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Stars, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Spectral energy distribution, Emission spectrum, Astrophysics::Earth and Planetary Astrophysics, Stellar evolution, Astrophysics::Galaxy Astrophysics
Abstract: We report a discovery of 6 massive galaxies with both extremely large Lya equivalent width and evolved stellar population at z ~ 3. These MAssive Extremely STrong Lya emitting Objects (MAESTLOs) have been discovered in our large-volume systematic survey for strong Lya emitters (LAEs) with twelve optical intermediate-band data taken with Subaru/Suprime-Cam in the COSMOS field. Based on the SED fitting analysis for these LAEs, it is found that these MAESTLOs have (1) large rest-frame equivalent width of EW_0(Lya) ~ 100--300 A, (2) M_star ~ 10^10.5--10^11.1 M_sun, and (3) relatively low specific star formation rates of SFR/M_star ~ 0.03--1 Gyr^-1. Three of the 6 MAESTLOs have extended Ly$\alpha$ emission with a radius of several kpc although they show very compact morphology in the HST/ACS images, which correspond to the rest-frame UV continuum. Since the MAESTLOs do not show any evidence for AGNs, the observed extended Lya emission is likely to be caused by star formation process including the superwind activity. We suggest that this new class of LAEs, MAESTLOs, provides a missing link from star-forming to passively evolving galaxies at the peak era of the cosmic star-formation history., Comment: Accepted for publication in ApJ Letters on 15th July, 2015. 6 pages including 3 figures and 2 tables
Published: 2015
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35. The VIMOS Public Extragalactic Redshift Survey (VIPERS). Hierarchical scaling and biasing

Author: Rita Tojeiro, O. Cucciati, S. de la Torre, J. Krywult, Enzo Branchini, Yannick Mellier, A. Cappi, Katarzyna Małek, H. J. McCracken, M. Scodeggio, L. Paioro, B. R. Granett, Julien Bel, G. De Lucia, Lauro Moscardini, D. Bottini, D. Maccagni, C. Di Porto, D. Vergani, M. Wolk, Ummi Abbas, M. Polletta, M. Bolzonella, C. Schimd, Will J. Percival, P. Franzetti, Jean Coupon, A. Marchetti, A. Iovino, Luigi Guzzo, Lidia Tasca, A. Zanichelli, H. Schlagenhaufer, John A. Peacock, Angela Burden, Stefanie Phleps, Agnieszka Pollo, O. Le Fèvre, Alexander Fritz, V. Le Brun, O. Ilbert, Federico Marulli, M. Fumana, Robert C. Nichol, B. Garilli, Christian Marinoni, S. Arnouts, Iary Davidzon, G. Zamorani, C. Adami, Cappi, A., Marulli, F., Bel, J., Cucciati, O., Branchini, E, de la Torre, S., Moscardini, L., Bolzonella, M., Guzzo, L., Abbas, U., Adami, C., Arnouts, S., Bottini, D., Coupon, J., Davidzon, I., De Lucia, G., Fritz, A., Franzetti, P., Fumana, M., Garilli, B., Granett, B. R., Ilbert, O., Iovino, A., Krywult, J., Le, Brun, Le Fèvre, O., Maccagni, D., Malek, K., Mccracken, H. J., Paioro, L., Polletta, M., Pollo, A., Scodeggio, M., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Nichol, R. C., Peacock, J. A., Percival, W. J., Phleps, S., Schimd, C., Schlagenhaufer, H., Wolk, M., Zamorani, G., Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), AUTRES, Canada-France-Hawaii Telescope Corporation (CFHT), National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i [Honolulu] (UH), Département de Radiologie [CHU de Rennes], Université de Rennes (UR), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Department of Cellular Biotechnologies and Haematology, Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), University of Leeds, Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Branchini, E., De La Torre, S., Granett, B.R., Le Brun, V., Małek, K., Mccracken, H.J., Tasca, L.A.M., Nichol, R.C., Peacock, J.A., and Percival, W.J.
Subjects: statistics [galaxies], Cosmology and Gravitation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Cosmology: observation, dark matter, Luminosity, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], large-scale structure of Universe, cosmology: observations, Sample variance, ST/J500665/1, Scaling, Astrophysics::Galaxy Astrophysics, STFC, Physics, Galaxies: statistic, Null (mathematics), RCUK, Astronomy and Astrophysics, Astronomy and Astrophysic, Redshift survey, Redshift, Galaxy, observations [cosmology], Space and Planetary Science, astro-ph.CO, Astrophysics - Cosmology and Nongalactic Astrophysics, observation [cosmology]
Abstract: We investigate the higher-order correlation properties of the VIMOS Public Extragalactic Redshift Survey (VIPERS) to test the hierarchical scaling hypothesis at z~1 and the dependence on galaxy luminosity, stellar mass, and redshift. We also aim to assess deviations from the linearity of galaxy bias independently from a previously performed analysis of our survey (Di Porto et al. 2014). We have measured the count probability distribution function in cells of radii 3 < R < 10 Mpc/h, deriving $\sigma_{8g}$, the volume-averaged two-,three-,and four-point correlation functions and the normalized skewness $S_{3g}$ and kurtosis $S_{4g}$ for volume-limited subsamples covering the ranges $-19.5 \le M_B(z=1.1)-5log(h) \le -21.0$, $9.0 < log(M*/M_{\odot} h^{-2}) \le 11.0$, $0.5 \le z < 1.1$. We have thus performed the first measurement of high-order correlations at z~1 in a spectroscopic redshift survey. Our main results are the following. 1) The hierarchical scaling holds throughout the whole range of scale and z. 2) We do not find a significant dependence of $S_{3g}$ on luminosity (below z=0.9 $S_{3g}$ decreases with luminosity but only at 1{\sigma}-level). 3) We do not detect a significant dependence of $S_{3g}$ and $S_{4g}$ on scale, except beyond z~0.9, where the dependence can be explained as a consequence of sample variance. 4) We do not detect an evolution of $S_{3g}$ and $S_{4g}$ with z. 5) The linear bias factor $b=\sigma_{8g}/\sigma_{8m}$ increases with z, in agreement with previous results. 6) We quantify deviations from the linear bias by means of the Taylor expansion parameter $b_2$. Our results are compatible with a null non-linear bias term, but taking into account other available data we argue that there is evidence for a small non-linear bias term., Comment: 20 pages, 14 figures, accepted for publication in Astronomy and Astrophysics
Published: 2015
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36. Discovery of a rich proto-cluster at z = 2.9 and associated diffuse cold gas in the VIMOS Ultra-Deep Survey (VUDS)

Author: Letizia P. Cassarà, Alessandro Cimatti, C. Moreau, Mara Salvato, V. Le Brun, Paolo Cassata, Margherita Talia, Nimish P. Hathi, O. Le Fèvre, Laurence Tresse, S. de la Torre, S. Bardelli, A. Durkalec, Sotiria Fotopoulou, C. López-Sanjuan, Adriano Fontana, P. W. Wang, Yoshiaki Taniguchi, Eros Vanzella, R. Thomas, Thierry Contini, M. Giavalisco, Peter Capak, Stephane Charlot, E. Zucca, Andrea Grazian, B. Ribeiro, G. Zamorani, Olga Cucciati, Yannick Mellier, D. Maccagni, Stéphane Paltani, Marco Castellano, M. Scodeggio, Olivier Ilbert, Ricardo Amorín, Laura Pentericci, N. Z. Scoville, Bianca Garilli, Daniela Vergani, Jean-Gabriel Cuby, Brian C. Lemaux, V. Sommariva, Lidia Tasca, Daniel Schaerer, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Cucciati, O., Zamorani, G., Lemaux, B.C., Bardelli, S., Cimatti, A., Le Fèvre, O., Cassata, P., Garilli, B., Le Brun, V., Maccagni, D., Pentericci, L., Tasca, L.A.M., Thomas, R., Vanzella, E., Zucca, E., Amorin, R., Capak, P., Cassarà, L.P., Castellano, M., Cuby, J.G., De La Torre, S., Durkalec, A., Fontana, A., Giavalisco, M., Grazian, A., Hathi, N.P., Ilbert, O., Moreau, C., Paltani, S., Ribeiro, B., Salvato, M., Schaerer, D., Scodeggio, M., Sommariva, V., Talia, M., Taniguchi, Y., Tresse, L., Vergani, D., Wang, P.W., Charlot, S., Contini, T., Fotopoulou, S., López-Sanjuan, C., Mellier, Y., Scoville, N., and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Line-of-sight, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Radio galaxy, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Rest frame, Astronomy and Astrophysic, Cosmology: observations, Galaxies: high-redshift, Large-scale structure of Universe, Space and Planetary Science, Cosmology: observation, Redshift, Galaxy, galaxies: high-redshift, cosmology: observations, Galaxy formation and evolution, [INFO]Computer Science [cs], Halo, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: [Abridged] We characterise a massive proto-cluster at z=2.895 that we found in the COSMOS field using the spectroscopic sample of the VIMOS Ultra-Deep Survey (VUDS). This is one of the rare structures at z~3 not identified around AGNs or radio galaxies, so it is an ideal laboratory to study galaxy formation in dense environments. The structure comprises 12 galaxies with secure spectroscopic redshift in an area of 7'x8', in a z bin of Dz=0.016. The measured galaxy number overdensity is delta_g=12+/-2. This overdensity has total mass of M~8.1x10^(14)M_sun in a volume of 13x15x17 Mpc^3. Simulations indicate that such an overdensity at z~2.9 is a proto-cluster that will collapse in a cluster of total mass M~2.5x10^(15)M_sun at z=0. We compare the properties of the galaxies within the overdensity with a control sample at the same z but outside the overdensity. We did not find any statistically significant difference between the properties (stellar mass, SFR, sSFR, NUV-r, r-K) of the galaxies inside and outside the overdensity. The stacked spectrum of galaxies in the overdensity background shows a significant absorption feature at the wavelength of Lya redshifted at z=2.895 (lambda=4736 A), with a rest frame EW = 4+/- 1.4 A. Stacking only background galaxies without intervening sources at z~2.9 along their line of sight, we find that this absorption feature has a rest frame EW of 10.8+/-3.7 A, with a detection S/N of ~4. These EW values imply a high column density (N(HI)~3-20x10^(19)cm^(-2)), consistent with a scenario where such absorption is due to intervening cold gas streams, falling into the halo potential wells of the proto-cluster galaxies. However, we cannot exclude the hypothesis that this absorption is due to the diffuse gas within the overdensity., Comment: 15 pages, 9 figures, accepted for publication in A&A (revised version after referee's comments and language editing)
Published: 2014
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37. MASSIV: Mass Assembly Survey with SINFONI in VVDS VI. Metallicity-related fundamental relations in star-forming galaxies at 1 \textless z \textless 2

Author: C. Divoy, O. Le Fèvre, J. Queyrel, Laurence Tresse, Markus Kissler-Patig, Daniela Vergani, L. Paioro, Thierry Contini, C. López-Sanjuan, Philippe Amram, Benoît Epinat, Lidia Tasca, Bianca Garilli, J. Moultaka, Enrique Pérez-Montero, V. Perret, Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), ANR-07-JCJC-0009,AGACTS,The assembly of galaxies along cosmic time from SINFONI 3D spectroscopic observations of a complete sample of high-redshift 1 < z < 1.8 galaxies(2007), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: Physics, Galaxies: fundamental parameters, Stellar mass, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Galaxies: abundances, Metallicity, Galaxies: high-redshift, Galaxies: evolution, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Star (graph theory), 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Physical cosmology, Space and Planetary Science, 0103 physical sciences, Galaxy formation and evolution, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: The MASSIV (Mass Assembly Survey with SINFONI in VVDS) project aims at finding constraints on the different processes involved in galaxy evolution. This study proposes to improve the understanding of the galaxy mass assembly through chemical evolution using the metallicity as a tracer of the star formation and interaction history. Methods. We analyse the full sample of MASSIV galaxies for which a metallicity estimate has been possible, that is 48 star-forming galaxies at $z\sim 0.9-1.8$, and compute the integrated values of some fundamental parameters, such as the stellar mass, the metallicity and the star formation rate (SFR). The sample of star-forming galaxies at similar redshift from zCOSMOS (P\'erez-Montero et al. 2013) is also combined with the MASSIV sample. We study the cosmic evolution of the mass-metallicty relation (MZR) together with the effect of close environment and galaxy kinematics on this relation. We then focus on the so-called fundamental metallicity relation (FMR) proposed by Mannucci et al. (2010) and other relations between stellar mass, SFR and metallicity as studied by Lara-L\'opez et al. (2010). We investigate if these relations are really fundamental, i.e. if they do not evolve with redshift. Results. The MASSIV galaxies follow the expected mass-metallicity relation for their median redshift. We find however a significant difference between isolated and interacting galaxies as found for local galaxies: interacting galaxies tend to have a lower metallicity. The study of the relation between stellar mass, SFR and metallicity gives such large scattering for our sample, even combined with zCOSMOS, that it is diffcult to confirm or deny the existence of a fundamental relation.
Published: 2014
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38. Discovering extremely compact and metal-poor, star-forming dwarf galaxies out to z ~ 0.9 in the VIMOS Ultra-Deep Survey

Author: D. Maccagni, C. López-Sanjuan, Stéphane Paltani, Yoshiaki Taniguchi, Eros Vanzella, Daniela Vergani, Andrea Grazian, O. Le Fèvre, Thierry Contini, Ricardo Amorín, Margherita Talia, M. Giavalisco, Nimish P. Hathi, Peter Capak, G. Zamorani, S. Bardelli, V. Le Brun, Rajat M. Thomas, E. Zucca, Sotiria Fotopoulou, Letizia P. Cassarà, S. de la Torre, P. Cassata, M. Scodeggio, Brian C. Lemaux, N. Z. Scoville, Jean-Gabriel Cuby, Alessandro Cimatti, Bianca Garilli, Adriano Fontana, Laura Pentericci, Laurence Tresse, Mara Salvato, P. W. Wang, B. Ribeiro, Lidia Tasca, A. Durkalec, C. Moreau, V. Sommariva, Daniel Schaerer, Yannick Mellier, Olga Cucciati, Stephane Charlot, Marco Castellano, Olivier Ilbert, Amorín, R., Sommariva, V., Castellano, M., Grazian, A., Tasca, L.A.M., Fontana, A., Pentericci, L., Cassata, P., Garilli, B., Le Brun, V., Le Fèvre, O., Maccagni, D., Thomas, R., Vanzella, E., Zamorani, G., Zucca, E., Bardelli, S., Capak, P., Cassará, L.P., Cimatti, A., Cuby, J.G., Cucciati, O., De La Torre, S., Durkalec, A., Giavalisco, M., Hathi, N.P., Ilbert, O., Lemaux, B.C., Moreau, C., Paltani, S., Ribeiro, B., Salvato, M., Schaerer, D., Scodeggio, M., Talia, M., Taniguchi, Y., Tresse, L., Vergani, D., Wang, P.W., Charlot, S., Contini, T., Fotopoulou, S., López-Sanjuan, C., Mellier, Y., Scoville, N., Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), European Project: 268107,EC:FP7:ERC,ERC-2010-AdG_20100224,EARLY(2011), European Project: 312725,EC:FP7:SPA,FP7-SPACE-2012-1,ASTRODEEP(2013), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: Galaxies: fundamental parameters, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Galaxies: abundances, Galaxies: fundamental parameter, FOS: Physical sciences, Astrophysics, Photometry (optics), Ionization, Galaxies: dwarf, Galaxies: evolution, Galaxies: high-redshift, Galaxies: starburst, Astronomy and Astrophysics, Space and Planetary Science, [INFO]Computer Science [cs], Emission spectrum, Dwarf galaxy, Physics, Star formation, Astronomy and Astrophysic, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Astrophysics of Galaxies (astro-ph.GA), [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Galaxies: abundance, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We report the discovery of 31 low-luminosity (-14.5 > M_{AB}(B) > -18.8), extreme emission line galaxies (EELGs) at 0.2 < z < 0.9 identified by their unusually high rest-frame equivalent widths (100 < EW[OIII] < 1700 A) as part of the VIMOS Ultra Deep Survey (VUDS). VIMOS optical spectra of unprecedented sensitivity ($I_{AB}$ ~ 25 mag) along with multiwavelength photometry and HST imaging are used to investigate spectrophotometric properties of this unique sample and explore, for the first time, the very low stellar mass end (M* < 10^8 M$_{\odot}$) of the luminosity-metallicity (LZR) and mass-metallicity (MZR) relations at z < 1. Characterized by their extreme compactness (R50 < 1 kpc), low stellar mass and enhanced specific star formation rates (SFR/M* ~ 10^{-9} - 10^{-7} yr^{-1}), the VUDS EELGs are blue dwarf galaxies likely experiencing the first stages of a vigorous galaxy-wide starburst. Using T_e-sensitive direct and strong-line methods, we find that VUDS EELGs are low-metallicity (7.5 < 12+log(O/H) < 8.3) galaxies with high ionization conditions, including at least three EELGs showing HeII 4686A emission and four EELGs of extremely metal-poor (, Letter in A&A 568, L8 (2014). This replacement matches the published version
Published: 2014
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39. The VIMOS Public Extragalactic Redshift Survey (VIPERS). Never mind the gaps: comparing techniques to restore homogeneous sky coverage

Author: M. Polletta, John A. Peacock, Enzo Branchini, C. Adami, A. Cappi, Alexander Fritz, P. Franzetti, A. Zanichelli, Lidia Tasca, M. Scodeggio, Bianca Garilli, Federico Marulli, M. Fumana, Julien Bel, L. Paioro, Jean Coupon, Olga Cucciati, Luigi Guzzo, Iary Davidzon, Agnieszka Pollo, D. Bottini, S. de la Torre, G. Zamorani, Daniela Vergani, A. Iovino, J. Krywult, Benjamin R. Granett, M. Bolzonella, Lauro Moscardini, C. Di Porto, Katarzyna Małek, O. Cucciati, B. R. Granett, E. Branchini, F. Marulli, A. Iovino, L. Moscardini, J. Bel, A. Cappi, J. A. Peacock, S. de la Torre, M. Bolzonella, L. Guzzo, M. Polletta, A. Fritz, C. Adami, D. Bottini, J. Coupon, I. Davidzon, P. Franzetti, M. Fumana, B. Garilli, J. Krywult, K. Małek, L. Paioro, A. Pollo, M. Scodeggio, L. A. M. Tasca, D. Vergani, A. Zanichelli, C. Di Porto, G. Zamorani, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Cucciati, O., Granett, B. R., Branchini, ENZO FRANCO, Marulli, F., Iovino, A., Moscardini, L., Bel, J., Cappi, A., Peacock, J. A., de la Torre, S., Bolzonella, M., Guzzo, L., Polletta, M., Fritz, A., Adami, C., Bottini, D., Coupon, J., Davidzon, I., Franzetti, P., Fumana, M., Garilli, B., Krywult, J., Malek, K., Paioro, L., Pollo, A., Scodeggio, M., Tasca, L. A. M., Vergani, D., Zanichelli, A., Di Porto, C., and Zamorani, G.
Subjects: statistics [galaxies], Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Filter (large eddy simulation), symbols.namesake, Astrophysics::Galaxy Astrophysics, Photometric redshift, media_common, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Wiener filter, Astronomy and Astrophysics, Cosmic variance, Redshift survey, cosmology: observations – large-scale structure of Universe – galaxies: high-redshift – galaxies: statistics, observations [cosmology], Galaxy, Redshift, Space and Planetary Science, Sky, symbols, large-scale structure of Universe, high-redshift [galaxies], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: [Abridged] Non-uniform sampling and gaps in sky coverage are common in galaxy redshift surveys, but these effects can degrade galaxy counts-in-cells and density estimates. We carry out a comparison of methods that aim to fill the gaps to correct for the systematic effects. Our study is motivated by the analysis of the VIMOS Extragalactic Redshift Survey (VIPERS), a flux-limited survey (i, Comment: 17 pages, 13 figures, accepted for publication in A&A (revised version after minor revision and language editing)
Published: 2014
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40. LyÎ± forest tomography from background galaxies: The first megaparsec-resolution large-scale structure map at z > 2

Author: Olivier Ilbert, Nao Suzuki, E. Zucca, Karina Caputi, Paolo Cassata, Rupert A. C. Croft, Peter Nugent, Casey W. Stark, Bianca Garilli, Anton M. Koekemoer, Andreu Arinyo-i-Prats, David J. Schlegel, Yoshiaki Taniguchi, J. Xavier Prochaska, D. Maccagni, Lidia Tasca, Anna-Christina Eilers, Gianni Zamorani, Laurence Tresse, Olivier Le Fevre, Joseph F. Hennawi, Martin White, Khee-Gan Lee, Vincent Le Brun, and Kapteyn Astronomical Institute
Subjects: Field (physics), Techniques: spectroscopic, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Surveys, 01 natural sciences, Spectral line, 0103 physical sciences, Absorption (logic), Spectral resolution, 010303 astronomy & astrophysics, Intergalactic medium, Physics, Cosmology: observations, Galaxies: high-redshift, Quasars: absorption lines, Astronomy and Astrophysics, Space and Planetary Science, 010308 nuclear & particles physics, Order (ring theory), Lyman-alpha forest, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present the first observations of foreground Lyman-$\alpha$ forest absorption from high-redshift galaxies, targeting 24 star-forming galaxies (SFGs) with $z\sim 2.3-2.8$ within a $5' \times 15'$ region of the COSMOS field. The transverse sightline separation is $\sim 2\,h^{-1}\mathrm{Mpc}$ comoving, allowing us to create a tomographic reconstruction of the 3D Ly$\alpha$ forest absorption field over the redshift range $2.20\leq z\leq 2.45$. The resulting map covers $6\,h^{-1}\mathrm{Mpc} \times 14\,h^{-1}\mathrm{Mpc}$ in the transverse plane and $230\,h^{-1}\mathrm{Mpc}$ along the line-of-sight with a spatial resolution of $\approx 3.5\,h^{-1}\mathrm{Mpc}$, and is the first high-fidelity map of large-scale structure on $\sim\mathrm{Mpc}$ scales at $z>2$. Our map reveals significant structures with $\gtrsim 10\,h^{-1}\mathrm{Mpc}$ extent, including several spanning the entire transverse breadth, providing qualitative evidence for the filamentary structures predicted to exist in the high-redshift cosmic web. Simulated reconstructions with the same sightline sampling, spectral resolution, and signal-to-noise ratio recover the salient structures present in the underlying 3D absorption fields. Using data from other surveys, we identified 18 galaxies with known redshifts coeval with our map volume enabling a direct comparison to our tomographic map. This shows that galaxies preferentially occupy high-density regions, in qualitative agreement with the same comparison applied to simulations. Our results establishes the feasibility of the CLAMATO survey, which aims to obtain Ly$\alpha$ forest spectra for $\sim 1000$ SFGs over $\sim 1 \,\mathrm{deg}^2$ of the COSMOS field, in order to map out IGM large-scale structure at $\langle z \rangle \sim 2.3$ over a large volume $(100\,h^{-1}\mathrm{Mpc})^3$., Comment: Accepted for publication in Astrophysical Journal Letters; 8 pages and 5 figures
Published: 2014

41. VIMOS Ultra-Deep Survey (VUDS): Witnessing the Assembly of a Massive Cluster at z~3.3

Author: R. Thomas, Andrea Grazian, Jean-Gabriel Cuby, Daniel Schaerer, S. de la Torre, E. Zucca, Laurence Tresse, Letizia P. Cassarà, Dale D. Kocevski, Marco Castellano, Olivier Ilbert, D. Maccagni, N. Z. Scoville, Ricardo Amorín, Andrea Cimatti, T. Sadibekova, Stéphane Paltani, V. Sommariva, Sotiria Fotopoulou, Lidia Tasca, Stephane Charlot, Thierry Contini, C. López-Sanjuan, A. Durkalec, Margherita Talia, Yannick Mellier, Bianca Garilli, G. Zamorani, S. Bardelli, Olga Cucciati, L. M. Lubin, Daniela Vergani, Adriano Fontana, M. Scodeggio, B. Ribeiro, M. Giavalisco, P. W. Wang, Laura Pentericci, Peter Capak, Nimish P. Hathi, Brian C. Lemaux, V. Le Brun, Paolo Cassata, Yoshiaki Taniguchi, Eros Vanzella, C. Moreau, O. Le Fèvre, Roy R. Gal, Mara Salvato, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), European Project: 268107,EC:FP7:ERC,ERC-2010-AdG_20100224,EARLY(2011), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Lemaux, B.C., Cucciati, O., Tasca, L.A.M., Le Fèvre, O., Zamorani, G., Cassata, P., Garilli, B., Le Brun, V., Maccagni, D., Pentericci, L., Thomas, R., Vanzella, E., Zucca, E., Amorín, R., Bardelli, S., Capak, P., Cassarà, L.P., Castellano, M., Cimatti, A., Cuby, J.G., De La Torre, S., Durkalec, A., Fontana, A., Giavalisco, M., Grazian, A., Hathi, N.P., Ilbert, O., Moreau, C., Paltani, S., Ribeiro, B., Salvato, M., Schaerer, D., Scodeggio, M., Sommariva, V., Talia, M., Taniguchi, Y., Tresse, L., Vergani, D., Wang, P.W., Charlot, S., Contini, T., Fotopoulou, S., Gal, R.R., Kocevski, D.D., López-Sanjuan, C., Lubin, L.M., Mellier, Y., Sadibekova, T., and Scoville, N.
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, galaxies: active, FOS: Physical sciences, Astrophysics, Spectral line, techniques: photometric, galaxies: high-redshift, Coma Cluster, Galaxies: active, Galaxies: clusters: general, Galaxies: evolution, Galaxies: high-redshift, Techniques: photometric, Techniques: spectroscopic, Astronomy and Astrophysics, Space and Planetary Science, Photometric redshift, media_common, Physics, Star formation, Astronomy and Astrophysic, Redshift, Galaxy, Universe, galaxies: clusters: general, Halo, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], techniques: spectroscopic, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Using new spectroscopic observations obtained as part of the VIMOS Ultra-Deep Survey (VUDS), we perform a systematic search for overdense environments in the early universe ($z>2$) and report here on the discovery of Cl J0227-0421, a massive protocluster at $z=3.29$. This protocluster is characterized by both the large overdensity of spectroscopically confirmed members, $\delta_{gal}=10.5\pm2.8$, and a significant overdensity in photometric redshift members. The halo mass of this protocluster is estimated, by a variety of methods, to be roughly $3\times10^{14}$ $\mathcal{M}_{\odot}$ at $z\sim3.3$, which, evolved to $z=0$ results in a halo mass rivaling or exceeding that of the Coma cluster. The properties of 19 spectroscopically confirmed member galaxies are compared with a large sample of VUDS/VVDS galaxies in lower density field environments at similar redshifts. We find tentative evidence for an excess of redder, brighter, and more massive galaxies within the confines of the protocluster relative to the field population, which suggests that we may be observing the beginning of environmentally-induced quenching. The properties of these galaxies are investigated, including a discussion of the brightest protocluster galaxy which appears to be undergoing vigorous coeval nuclear and starburst activity. The remaining member galaxies appear to have characteristics which are largely similar to the field population. Though we find weaker evidence of the suppression of the median star formation rates amongst and differences in stacked spectra of member galaxies with respect to the field, we defer any conclusions of these trends to future work with the ensemble of protostructures that are found in the full VUDS sample., Comment: 23 pages, 15 figures, 3 tables, accepted for publication in A&A after minor changes, v3/v4 contains an additional online table and minor topical changes
Published: 2014
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42. The VIMOS Public Extragalactic Redshift Survey (VIPERS): A quiescent formation of massive red-sequence galaxies over the past 9 Gyr

Author: Alexander Fritz, C. Adami, Federico Marulli, M. Fumana, A. Marchetti, Rita Tojeiro, J. Krywult, D. Bottini, Will J. Percival, A. Iovino, Enzo Branchini, Yannick Mellier, A. Cappi, Luigi Guzzo, Lidia Tasca, P. Franzetti, D. Vergani, Lauro Moscardini, A. Zanichelli, L. Paioro, H. Schlagenhaufer, John A. Peacock, B. Garilli, M. Scodeggio, M. Wolk, Iary Davidzon, Benjamin R. Granett, C. Di Porto, Julien Bel, M. Bolzonella, Robert C. Nichol, G. Zamorani, G. De Lucia, O. Cucciati, S. de la Torre, Christian Marinoni, Katarzyna Małek, Ummi Abbas, M. Polletta, Jean Coupon, H. J. McCracken, S. Arnouts, Angela Burden, V. Le Brun, Stefanie Phleps, O. Ilbert, Agnieszka Pollo, D. Maccagni, O. Le Fèvre, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Torino (OATo), Istituto Nazionale di Astrofisica (INAF), AUTRES, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Department of Marine, Earth, and Atmospheric Sciences [NCSU] (MEAS), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Centre de Physique Théorique - UMR 6207 (CPT), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, A. Fritz, M. Scodeggio, O. Ilbert, M. Bolzonella, I. Davidzon, J. Coupon, B. Garilli, L. Guzzo, G. Zamorani, U. Abba, C. Adami, S. Arnout, J. Bel, D. Bottini, E. Branchini, A. Cappi, O. Cucciati, G. De Lucia, S. de la Torre, P. Franzetti, M. Fumana, B. R. Granett, A. Iovino, J. Krywult, V. Le Brun, O. Le Fèvre, D. Maccagni, K. Małek, F. Marulli, H. J. McCracken, L. Paioro, M. Polletta, A. Pollo, H. Schlagenhaufer, L. A. M. Tasca, R. Tojeiro, D. Vergani, A. Zanichelli, A. Burden, C. Di Porto, A. Marchetti, C. Marinoni, Y. Mellier, L. Moscardini, R. C. Nichol, J. A. Peacock, W. J. Percival, S. Phlep, M. Wolk, Fritz, A., Scodeggio, M., Ilbert, O., Bolzonella, M., Davidzon, I., Coupon, J., Garilli, B., Guzzo, L., Zamorani, G., Abbas, U., Adami, C., Arnouts, S., Bel, J., Bottini, D., Branchini, ENZO FRANCO, Cappi, A., Cucciati, O., De Lucia, G., De la Torre, S., Franzetti, P., Fumana, M., Granett, B. R., Iovino, A., Krywult, J., Le Brun, V., Le Fevre, O., Maccagni, D., Malek, K., Marulli, F., Mccracken, H. J., Paioro, L., Polletta, M., Pollo, A., Schlagenhaufer, H., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Moscardini, L., Nichol, R. C., Peacock, J. A., Percival, W. J., Phleps, S., and Wolk, M.
Subjects: statistics [galaxies], Cosmology and Nongalactic Astrophysics (astro-ph.CO), astro-ph.GA, Population, Theoretical models, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], observations [surveys / cosmology], education, STFC, evolution [galaxies], Astrophysics::Galaxy Astrophysics, Galaxy cluster, Luminosity function (astronomy), Physics, education.field_of_study, ST/I001204/1, RCUK, Astronomy and Astrophysics, luminosity function, mass function [galaxies], Redshift survey, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), astro-ph.CO, photometry [galaxies], surveys – cosmology: observations – galaxies: evolution – galaxies: photometry – galaxies: luminosity function, mass function – galaxies: statistics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We explore the evolution of the Colour-Magnitude Relation (CMR) and Luminosity Function (LF) at 0.410^11 M_sun) and expeditious RS formation over a short period of ~1.5 Gyr starting before z=1. This is supported by the detection of ongoing SF in ETGs at 0.9, Comment: 27 pages, 21 figures, accepted for publication in A&A
Published: 2014
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43. The VIMOS Public Extragalactic Redshift Survey Searching for cosmic voids

Author: Benjamin R. Granett, Stéphane Arnouts, Christian Marinoni, Daniela Vergani, Rita Tojeiro, A. Iovino, C. Adami, Robert C. Nichol, M. Bolzonella, S. de la Torre, G. De Lucia, D. Bottini, Katarzyna Małek, Alexander Fritz, J. Krywult, Jean Coupon, T. Moutard, D. Micheletti, Federico Marulli, M. Fumana, C. Schimd, Agnieszka Pollo, Angela Burden, Bianca Garilli, O. Le Fèvre, Olga Cucciati, Enzo Branchini, Yannick Mellier, A. Cappi, O. Ilbert, P. Franzetti, H. J. McCracken, D. Maccagni, A. Marchetti, Will J. Percival, A. Zanichelli, Lidia Tasca, V. Le Brun, Ummi Abbas, M. Polletta, John A. Peacock, Luigi Guzzo, Julien Bel, Iary Davidzon, G. Zamorani, M. Scodeggio, C. Di Porto, Adam J. Hawken, Lauro Moscardini, D. Micheletti, A. Iovino, A. J. Hawken, B. R. Granett, M. Bolzonella, A. Cappi, L. Guzzo, U. Abba, C. Adami, S. Arnout, J. Bel, D. Bottini, E. Branchini, J. Coupon, O. Cucciati, I. Davidzon, G. De Lucia, S. de la Torre, A. Fritz, P. Franzetti, M. Fumana, B. Garilli, O. Ilbert, J. Krywult, V. Le Brun, O. Le Fèvre, D. Maccagni, K. Małek, F. Marulli, H. J. McCracken, M. Polletta, A. Pollo, C. Schimd, M. Scodeggio, L. A. .M. Tasca, R. Tojeiro, D. Vergani, A. Zanichelli, A. Burden, C. Di Porto, A. Marchetti, C. Marinoni, Y. Mellier, T. Moutard, L. Moscardini, R. C. Nichol, J. A. Peacock, W. J. Percival, G. Zamorani, AUTRES, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Torino (OATo), Istituto Nazionale di Astrofisica (INAF), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E3 Cosmologie, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Département Informatique pour les Systèmes Coopératifs Ouverts et Décentralisés (ISCOD-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Henri Fayol, Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Department of Marine, Earth, and Atmospheric Sciences [NCSU] (MEAS), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Micheletti, D., Iovino, A., Hawken, A. J., Granett, B. R., Bolzonella, M., Cappi, A., Guzzo, L., Abbas, U., Adami, C., Arnouts, S., Bel, J., Bottini, D., Branchini, ENZO FRANCO, Coupon, J., Cucciati, O., Davidzon, I., De Lucia, G., de la Torre, S., Fritz, A., Franzetti, P., Fumana, M., Garilli, B., Ilbert, O., Krywult, J., Le Brun, V., Le Fevre, O., Maccagni, D., Malek, K., Marulli, F., Mccracken, H. J., Polletta, M., Pollo, A., Schimd, C., Scodeggio, M., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Moutard, T., Moscardini, L., Nichol, R. C., Peacock, J. A., Percival, W. J., and Zamorani, G.
Subjects: Void (astronomy), Cosmology and Gravitation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, 010306 general physics, 010303 astronomy & astrophysics, STFC, Astrophysics::Galaxy Astrophysics, Physics, large-scale structure of universe, COSMIC cancer database, Astrophysics::Instrumentation and Methods for Astrophysics, RCUK, Astronomy and Astrophysics, Cosmological model, Redshift survey, Redshift, Galaxy, observations [cosmology], galaxies: general – cosmology: observations – large-scale structure of Universe, Space and Planetary Science, astro-ph.CO, Astrophysics - Cosmology and Nongalactic Astrophysics, general [galaxies]
Abstract: Context. The characterisation of cosmic voids gives unique information about the large-scale distribution of galaxies, their evolution, and the cosmological model. Aims. We identify and characterise cosmic voids in the VIMOS Public Extragalactic Redshift Survey (VIPERS) at redshift 0:55
Published: 2014
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44. On-sky characterisation of the VISTA NB118 narrow-band filters at 1.19 mu m

Author: Bo Milvang-Jensen, K. Nilsson, Lidia Tasca, Olivier Le Fèvre, Palle Møller, Wolfram Freudling, James Dunlop, Johan P. U. Fynbo, Johannes Zabl, David Sobral, Jens Hjorth, H. J. McCracken, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), European Project: 278202,EC:FP7:ERC,ERC-2011-StG_20101014,EGGS(2011), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Doubly ionized oxygen, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Instrumentation: photometers, law.invention, Telescope, Methods: observational, law, 0103 physical sciences, Sensitivity (control systems), Emission spectrum, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Galaxies: high-redshift, Order (ring theory), Astronomy and Astrophysics, Galaxies: photometry, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Space and Planetary Science, Sky, Astrophysics of Galaxies (astro-ph.GA), Astrophysics - Instrumentation and Methods for Astrophysics, Techniques: photometric, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Observations of the high redshift Universe through narrow-band filters have proven very successful in the last decade. The 4-meter VISTA telescope, equipped with the wide-field camera VIRCAM, offers a major step forward in wide-field near-infrared imaging, and in order to utilise VISTA's large field-of-view and sensitivity, the Dark Cosmology Centre provided a set of 16 narrow-band filters for VIRCAM. These NB118 filters are centered at a wavelength near 1.19 micron in a region with few airglow emission lines. The filters allow the detection of Halpha emitters at z = 0.8, Hbeta and [OIII] emitters at z ~ 1.4, [OII] emitters at z = 2.2, and Ly-alpha emitters at z = 8.8. Based on guaranteed time observations of the COSMOS field we here present a detailed description and characterization of the filters and their performance. In particular we provide sky-brightness levels and depths for each of the 16 detector/filter sets and find that some of the filters show signs of some red-leak. We identify a sample of 2 x 10^3 candidate emission-line objects in the data. Cross-correlating this sample with a large set of galaxies with known spectroscopic redshifts we determine the "in situ" passbands of the filters and find that they are shifted by about 3.5-4 nm (corresponding to 30% of the filter width) to the red compared to the expectation based on the laboratory measurements. Finally, we present an algorithm to mask out persistence in VIRCAM data. Scientific results extracted from the data will be presented separately., Accepted for publication in Astronomy and Astrophysics
Published: 2013
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45. The VIMOS Public Extragalactic Redshift Survey (VIPERS) : A precise measurement of the galaxy stellar mass function and the abundance of massive galaxies at redshifts 0.5 < z < 1.3

Author: P. Franzetti, T. Moutard, C. Adami, D. Bottini, M. Bolzonella, G. De Lucia, Iary Davidzon, B. Garilli, Lauro Moscardini, Ummi Abbas, M. Polletta, Enzo Branchini, L. Paioro, G. Zamorani, Yannick Mellier, Will J. Percival, A. Cappi, D. Maccagni, A. Marchetti, J. Krywult, Benjamin R. Granett, Julien Bel, Angela Burden, M. Wolk, Stefanie Phleps, Agnieszka Pollo, Luigi Guzzo, Lidia Tasca, C. Di Porto, H. J. McCracken, Robert C. Nichol, O. Le Fèvre, D. Vergani, Katarzyna Małek, Alexander Fritz, V. Le Brun, O. Ilbert, Jean Coupon, A. Iovino, Federico Marulli, M. Fumana, A. Zanichelli, H. Schlagenhaufer, John A. Peacock, Christian Marinoni, S. Arnouts, M. Scodeggio, Rita Tojeiro, O. Cucciati, S. de la Torre, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), AUTRES, INAF - Osservatorio Astrofisico di Torino (OATo), Istituto Nazionale di Astrofisica (INAF), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Department of Marine, Earth, and Atmospheric Sciences [NCSU] (MEAS), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Centre de Physique Théorique - UMR 6207 (CPT), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, I. Davidzon, M. Bolzonella, J. Coupon, O. Ilbert, S. Arnout, S. de la Torre, A. Fritz, G. De Lucia, A. Iovino, B. R. Granett, G. Zamorani, L. Guzzo, U. Abba, C. Adami, J. Bel, D. Bottini, E. Branchini, A. Cappi, O. Cucciati, P. Franzetti, M. Fumana, B. Garilli, J. Krywult, V. Le Brun, O. Le Fèvre, D. Maccagni, K. Małek, F. Marulli, H. J. McCracken, L. Paioro, J. A. Peacock, M. Polletta, A. Pollo, H. Schlagenhaufer, M. Scodeggio, L. A. M. Tasca, R. Tojeiro, D. Vergani, A. Zanichelli, A. Burden, C. Di Porto, A. Marchetti, C. Marinoni, Y. Mellier, L. Moscardini, T. Moutard, R. C. Nichol, W. J. Percival, S. Phlep, M. Wolk, Davidzon, I., Bolzonella, M., Coupon, J., Ilbert, O., Arnouts, S., de la Torre, S., Fritz, A., De Lucia, G., Iovino, A., Granett, B. R., Zamorani, G., Guzzo, L., Abbas, U., Adami, C., Bel, J., Bottini, D., Branchini, E, Cappi, A., Cucciati, O., Franzetti, P., Fumana, M., Garilli, B., Krywult, J., Le Brun, V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Mccracken, H. J., Paioro, L., Peacock, J. A., Polletta, M., Pollo, A., Schlagenhaufer, H., Scodeggio, M., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Moscardini, L., Moutard, T., Nichol, R. C., Percival, W. J., Phleps, S., and Wolk, M.
Subjects: statistics [galaxies], Stellar mass, media_common.quotation_subject, Population, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], mass function, galaxies: evolution, galaxies: statistics, cosmology: observations, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, evolution [galaxies], ComputingMilieux_MISCELLANEOUS, media_common, Physics, education.field_of_study, Number density, 010308 nuclear & particles physics, Astronomy and Astrophysics, Cosmic variance, Redshift survey, luminosity function, mass function [galaxies], Galaxy, Universe, Redshift, observations [cosmology], galaxies: luminosity function, Space and Planetary Science, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We measure the evolution of the galaxy stellar mass function from z=1.3 to z=0.5 using the first 53,608 redshifts of the ongoing VIMOS Public Extragalactic Survey (VIPERS). We estimate the galaxy stellar mass function at several epochs discussing in detail the amount of cosmic variance affecting our estimate. We find that Poisson noise and cosmic variance of the galaxy mass function in the VIPERS survey are comparable with the statistical uncertainties of large surveys in the local universe. VIPERS data allow us to determine with unprecedented accuracy the high-mass tail of the galaxy stellar mass function, which includes a significant number of galaxies that are usually too rare to detect with any of the past spectroscopic surveys. At the epochs sampled by VIPERS, massive galaxies had already assembled most of their stellar mass. We apply a photometric classification in the (U-V) rest-frame colour to compute the mass function of blue and red galaxies, finding evidence for the evolution of their contribution to the total number density budget: the transition mass above which red galaxies dominate is found to be about 10^10.4 M_sun at z=0.55 and evolves proportionally to (1+z)^3. We are able to trace separately the evolution of the number density of blue and red galaxies with masses above 10^11.4 M_sun, in a mass range barely studied in previous work. We find that for such large masses, red galaxies show a milder evolution with redshift, when compared to objects at lower masses. At the same time, we detect a population of similarly massive blue galaxies, which are no longer detectable below z=0.7. These results show the improved statistical power of VIPERS data, and give initial promising indications of mass-dependent quenching of galaxies at z~1. [Abridged], Comment: 19 pages, 14 figures, 2 tables. A&A in press (accepted for publication on July 12th)
Published: 2013
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46. The VIMOS Public Extragalactic Redshift Survey (VIPERS) : Galaxy clustering and redshift-space distortions at z ≃ 0.8 in the first data release

Author: Daniela Vergani, Luigi Guzzo, G. De Lucia, M. Wolk, Agnieszka Pollo, Stéphane Arnouts, Robert C. Nichol, C. Di Porto, Enzo Branchini, Angela Burden, D. Bottini, Yannick Mellier, A. Cappi, Stefanie Phleps, A. Marchetti, Christian Marinoni, Lauro Moscardini, H. J. McCracken, C. Adami, G. Zamorani, Lidia Tasca, Iary Davidzon, Pierluigi Monaco, Bianca Garilli, O. Le Fèvre, Alexander Fritz, Ummi Abbas, M. Polletta, Benjamin R. Granett, Federico Marulli, M. Fumana, J. Krywult, Will J. Percival, D. Maccagni, P. Franzetti, Julien Bel, Marco Scodeggio, A. Zanichelli, Katarzyna Małek, L. Paioro, V. Le Brun, Rita Tojeiro, S. de la Torre, M. Bolzonella, A. Iovino, H. Schlagenhaufer, John A. Peacock, Jean Coupon, Olga Cucciati, Olivier Ilbert, AUTRES, INAF - Osservatorio Astrofisico di Torino (OATo), Istituto Nazionale di Astrofisica (INAF), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Department of Marine, Earth, and Atmospheric Sciences [NCSU] (MEAS), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Centre de Physique Théorique - UMR 6207 (CPT), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Trieste (OAT), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, de la Torre, S., Guzzo, L., Peacock, J. A., Branchini, E., Iovino, A., Granett, B. R., Abbas, U., Adami, C., Arnouts, S., Bel, J., Bolzonella, M., Bottini, D., Cappi, A., Coupon, J., Cucciati, O., Davidzon, I., De Lucia, G., Fritz, A., Franzetti, P., Fumana, M., Garilli, B., Ilbert, O., Krywult., J., Le Brun., V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Mccracken, H. J., Moscardini, L., Paioro, L., Percival, J. W., Polletta, M., Pollo, A., Schlagenhaufer, H., Scodeggio, M., Tasca, L., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Monaco, P., Nichol, R. C., Phleps, S., Wolk, M., Zamorani, G., S. de la Torre, L. Guzzo, J. A. Peacock, E. Branchini, A. Iovino, B. R. Granett, U. Abba, C. Adami, S. Arnout, J. Bel, M. Bolzonella, D. Bottini, A. Cappi, J. Coupon, O. Cucciati, I. Davidzon, G. De Lucia, A. Fritz, P. Franzetti, M. Fumana, B. Garilli, O. Ilbert, J. Krywult, V. Le Brun, O. Le Fèvre, D. Maccagni, K. Małek, F. Marulli, H. J. McCracken, L. Moscardini, L. Paioro, W. J. Percival, M. Polletta, A. Pollo, H. Schlagenhaufer, M. Scodeggio, L. A. M. Tasca, R. Tojeiro, D. Vergani, A. Zanichelli, A. Burden, C. Di Porto, A. Marchetti, C. Marinoni, Y. Mellier, P. Monaco, R. C. Nichol, S. Phlep, M. Wolk, and G. Zamorani
Subjects: statistics [galaxies], Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Measure (mathematics), Redshift-space distortions, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Cluster analysis, 010303 astronomy & astrophysics, media_common, Physics, 010308 nuclear & particles physics, Cosmology: observations, Galaxies: high-redshift, Galaxies: statistics, Large-scale structure of Universe, Sigma, Astronomy and Astrophysics, Redshift survey, observations [cosmology], Galaxy, Redshift, Universe, Space and Planetary Science, large-scale structure of Universe, high-redshift [galaxies], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present in this paper the general real- and redshift-space clustering properties of galaxies as measured in the first data release of the VIPERS survey. VIPERS is a large redshift survey designed to probe the distant Universe and its large-scale structure at 0.5 < z < 1.2. We describe in this analysis the global properties of the sample and discuss the survey completeness and associated corrections. This sample allows us to measure the galaxy clustering with an unprecedented accuracy at these redshifts. From the redshift-space distortions observed in the galaxy clustering pattern we provide a first measurement of the growth rate of structure at z = 0.8: f��_8 = 0.47 +/- 0.08. This is completely consistent with the predictions of standard cosmological models based on Einstein gravity, although this measurement alone does not discriminate between different gravity models., 19 pages, 19 figures, accepted for publication in A&A
Published: 2013
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47. The dependence of Galactic outflows on the properties and orientation of zCOSMOS galaxies at z ~ 1

Author: A. Cappi, E. Zucca, Alvio Renzini, Pascal Oesch, Masaomi Tanaka, C. Knobel, V. Presotto, Anton M. Koekemoer, Gianni Zamorani, K. Kovac, P. Nair, S. de la Torre, V. Mainieri, Angela Bongiorno, M. Bolzonella, Jean-Paul Kneib, Lucia Pozzetti, Daniela Vergani, M. Scodeggio, J. F. Le Borgne, A. Iovino, E. Hardmeier, P. Kampczyk, Thierry Contini, B. Garilli, Roser Pello, Rongmon Bordoloi, John D. Silverman, M. Mignoli, O. Le Fèvre, S. Bardelli, Michele Moresco, Andrea Cimatti, V. Le Brun, Lidia Tasca, C. M. Carollo, Christian Maier, P. Franzetti, F. Lamareille, Y. Peng, E. Perez Montero, Olga Cucciati, Karina Caputi, Simon J. Lilly, Laurence Tresse, Graziano Coppa, L. de Ravel, Bordoloi, R., Lilly, S.J., Hardmeier, E., Contini, T., Kneib, J.-P., Fevre, O. Le, Mainieri, V., Renzini, A., Scodeggio, M., Zamorani, G., Bardelli, S., Bolzonella, M., Bongiorno, A., Caputi, K., Carollo, C.M., Cucciati, O., De La Torre, S., De Ravel, L., Garilli, B., Iovino, A., Kampczyk, P., Kovač, K., Knobel, C., Lamareille, F., Borgne, J.-F. Le, Brun, V. Le, Maier, C., Mignoli, M., Oesch, P., Pello, R., Peng, Y., Perez Montero, E., Presotto, V., Silverman, J., Tanaka, M., Tasca, L., Tresse, L., Vergani, D., Zucca, E., Cappi, A., Cimatti, A., Coppa, G., Franzetti, P., Koekemoer, A., Moresco, M., Nair, P., and Pozzetti, L.
Subjects: Physics, Nuclear and High Energy Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Absorption spectroscopy, Star formation, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Mass loading, ultraviolet: ISM, Galaxy, Spectral line, Orientation (vector space), Space and Planetary Science, galaxies: high-redshift, Astrophysics::Solar and Stellar Astrophysics, intergalactic medium, galaxies: evolution, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present an analysis of cool outflowing gas around galaxies, traced by MgII absorption lines in the co-added spectra of a sample of 486 zCOSMOS galaxies at 1 < z < 1.5. These galaxies span a range of stellar masses (9.45< log[M*/Msun] 5-7 Msun/yr and a mass loading factor (�� = dMout/dt /SFR) comparable to the star formation rates of the galaxies., 12 pages, 14 figures, ApJ submitted
Published: 2013

48. MASSIV: Mass Assembly Survey with SINFONI in VVDS V. The major merger rate of star-forming galaxies at 0.9 \textless z \textless 1.8 from IFS-based close pairs

Author: Benoît Epinat, Thierry Contini, C. Divoy, V. Perret, J. Queyrel, Daniela Vergani, Bianca Garilli, Lidia Tasca, Philippe Amram, Markus Kissler-Patig, C. López-Sanjuan, Laurence Tresse, O. Le Fèvre, L. Paioro, J. Moultaka, Laboratoire d'Astrophysique de Marseille (LAM), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Space and Planetary Science, 0103 physical sciences, Astronomy and Astrophysics, Astrophysics, Star (graph theory), 010303 astronomy & astrophysics, 01 natural sciences, Galaxy, Redshift, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We aim to measure the major merger rate of star-forming galaxies at 0.9 < z = 1/4), and, using merger time scales from cosmological simulations, the gas-rich major merger rate at a mean redshift up to z = 1.54. We find a high gas-rich major merger fraction of 20.8+15.2-6.8 %, 20.1+8.0-5.1 % and 22.0+13.7-7.3 % for close pairs with r_p, Comment: Published in Astronomy and Astrophysics, 24 pages, 30 figures, 2 tables. Appendix with the residual images from GALFIT added. Minor changes with respect to the initial version
Published: 2013
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49. The VIMOS Public Extragalactic Redshift Survey (VIPERS). A Support Vector Machine classification of galaxies, stars and AGNs

Author: H. J. McCracken, D. Vergani, D. Maccagni, Katarzyna Małek, M. Bolzonella, A. Solarz, D. Bottini, L. Paioro, G. De Lucia, G. Zamorani, J. Krywult, Julien Bel, P. Franzetti, Will J. Percival, A. Marchetti, Ummi Abbas, C. Adami, M. Polletta, M. Wolk, Angela Burden, B. Garilli, C. Di Porto, Luigi Guzzo, Stefanie Phleps, Agnieszka Pollo, Enzo Branchini, Robert C. Nichol, Yannick Mellier, Lauro Moscardini, A. Cappi, Lidia Tasca, Benjamin R. Granett, V. Le Brun, O. Ilbert, A. Iovino, Jean Coupon, A. Zanichelli, H. Schlagenhaufer, John A. Peacock, I. Davidzon, Alexander Fritz, Federico Marulli, M. Fumana, Christian Marinoni, S. Arnouts, M. Scodeggio, O. Le Fèvre, Rita Tojeiro, O. Cucciati, S. de la Torre, K. Małek, A. Solarz, A. Pollo, A. Fritz, B. Garilli, M. Scodeggio, A. Iovino, B. R. Granett, U. Abba, C. Adami, S. Arnout, J. Bel, M. Bolzonella, D. Bottini, E. Branchini, A. Cappi, J. Coupon, O. Cucciati, I. Davidzon, G. De Lucia, S. de la Torre, P. Franzetti, M. Fumana, L. Guzzo, O. Ilbert, J. Krywult, V. Le Brun, O. Le Fevre, D. Maccagni, F. Marulli, H. J. McCracken, L. Paioro, M. Polletta, H. Schlagenhaufer, L. A. M. Tasca, R. Tojeiro, D. Vergani, A. Zanichelli, A. Burden, C. Di Porto, A. Marchetti, C. Marinoni, Y. Mellier, L. Moscardini, R. C. Nichol, J. A. Peacock, W. J. Percival, S. Phlep, M. Wolk, G. Zamorani, Małek, K., Solarz, A., Pollo, A., Fritz, A., Garilli, B., Scodeggio, M., Iovino, A., Granett, B. R., Abbas, U., Adami, C., Arnouts, S., Bel, J., Bolzonella, M., Bottini, D., Branchini, E, Cappi, A., Coupon, J., Cucciati, O., Davidzon, I., De Lucia, G., de la Torre, S., Franzetti, P., Fumana, M., Guzzo, L., Ilbert, O., Krywult, J., Le Brun, V., Le Fevre, O., Maccagni, D., Marulli, F., Mccracken, H. J., Paioro, L., Polletta, M., Schlagenhaufer, H., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Burden, A., Di Porto, C., Marchetti, A., Marinoni, C., Mellier, Y., Moscardini, L., Nichol, R. C., Peacock, J. A., Percival, W. J., Phleps, S., Wolk, M., and Zamorani, G.
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, statistical [methods], fundamental parameters [stars], FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Photometry (optics), surveys, 0103 physical sciences, data analysis [methods], fundamental parameters [galaxies], 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Redshift survey, observations [cosmology], Galaxy, Redshift, Support vector machine, Cosmology: observations, Galaxies: fundamental parameters, Methods: data analysis, Methods: statistical, Stars: fundamental parameters, Surveys, Stars, Space and Planetary Science, Sky, Classifier (UML), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The aim of this work is to develop a comprehensive method for classifying sources in large sky surveys and we apply the techniques to the VIMOS Public Extragalactic Redshift Survey (VIPERS). Using the optical (u*, g', r', i') and NIR data (z', Ks), we develop a classifier, based on broad-band photometry, for identifying stars, AGNs and galaxies improving the purity of the VIPERS sample. Support Vector Machine (SVM) supervised learning algorithms allow the automatic classification of objects into two or more classes based on a multidimensional parameter space. In this work, we tailored the SVM for classifying stars, AGNs and galaxies, and applied this classification to the VIPERS data. We train the SVM using spectroscopically confirmed sources from the VIPERS and VVDS surveys. We tested two SVM classifiers and concluded that including NIR data can significantly improve the efficiency of the classifier. The self-check of the best optical + NIR classifier has shown a 97% accuracy in the classification of galaxies, 97 for stars, and 95 for AGNs in the 5-dimensional colour space. In the test on VIPERS sources with 99% redshift confidence, the classifier gives an accuracy equal to 94% for galaxies, 93% for stars, and 82% for AGNs. The method was applied to sources with low quality spectra to verify their classification, and thus increasing the security of measurements for almost 4 900 objects. We conclude that the SVM algorithm trained on a carefully selected sample of galaxies, AGNs, and stars outperforms simple colour-colour selection methods, and can be regarded as a very efficient classification method particularly suitable for modern large surveys., 14 pages, 11 figures, 9 tables, published in A&A
Published: 2013

50. Proto-groups at 1.8 < z < 3 in the zCOSMOS-deep Sample

Author: Laurence Tresse, Preethi Nair, C. Diener, Anton M. Koekemoer, S. Bardelli, J. F. Le Borgne, Angela Bongiorno, C. Knobel, Gianni Zamorani, Andrea Cimatti, V. Mainieri, K. Kovac, Alvio Renzini, M. Scodeggio, M. Bolzonella, Graziano Coppa, Jean-Paul Kneib, A. Iovino, E. Zucca, C. López-Sanjuan, Christian Maier, Lucia Pozzetti, Daniela Vergani, Thierry Contini, John D. Silverman, A. Cappi, Bianca Garilli, Simon J. Lilly, E. Perez Montero, Karina Caputi, L. de Ravel, Y. Peng, Rongmon Bordoloi, S. de la Torre, V. Presotto, V. Le Brun, N. Z. Scoville, O. Le Fèvre, Michele Moresco, Niraj Welikala, F. Lamareille, Lidia Tasca, Gerard Lemson, Masayuki Tanaka, C. M. Carollo, M. Mignoli, P. Kampczyk, R. Pello, P. Franzetti, H. J. McCracken, and Olga Cucciati
Subjects: SDSS, 010504 meteorology & atmospheric sciences, Sample (material), Astrophysics, TO 2.5, MASS, 01 natural sciences, galaxies: groups: general, galaxies: high-redshift, SATELLITE GALAXIES, 0103 physical sciences, Satellite galaxy, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, IDENTIFICATION, Epoch (reference date), Astronomy and Astrophysics, GROUP CATALOG, Redshift survey, STAR-FORMATION HISTORY, Redshift, Galaxy, EVOLUTION, Space and Planetary Science, Physical space, Halo, HIGH-REDSHIFT, CLUSTERS, catalogs
Abstract: We identify 42 "candidate groups" lying between 1.8
Published: 2013
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