Search

Your search keyword '"E. Perez Montero"' showing total 37 results
Start Over Author "E. Perez Montero" Search Limiters Available in Library Collection
37 results on '"E. Perez Montero"'

1. Dissecting Photometric redshift for Active Galactic Nuclei using XMM- and Chandra-COSMOS samples

Author

Salvato, M., Ilbert, O., Hasinger, G., Rau, A., Civano, F., Zamorani, G., Brusa, M., Elvis, M., Vignali, C., Aussel, H., Comastri, A., Fiore, F., Floc'h, E. Le, Mainieri, V., Bardelli, S., Bolzonella, M., Bongiorno, A., Capak, P., Caputi, K., Cappelluti, N., Carollo, C. M., Contini, T., Garilli, B., Iovino, A., Fotopoulou, S., Fruscione, A., Gilli, R., Halliday, C., Kneib, J-P., Kakazu, Y., Kartaltepe, J. S., Koekemoer, A. M., Kovac, K., Ideue, Y., Ikeda, H., Impey, C. D., Fevre, O. Le, Lamareille, F., Lanzuisi, G., Borgne, J-F. Le, Brun, V. Le, Lilly, S. J., Maier, C., Manohar, S., Masters, D., McCracken, H., Messias, H., Mignoli, M., Mobasher, B., Nagao, T., Pello, R., Puccetti, S., Renzini, E. Perez Montero A., Sargent, M., Sanders, D. B., Scodeggio, M., Scoville, N., Shopbell, P., Silvermann, J., Taniguchi, Y., Tasca, L., Tresse, L., Trump, J. R., and Zucca, E.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

With this paper, we release accurate photometric redshifts for 1692 counterparts to Chandra sources in the central square degree of the COSMOS field. The availability of a large training set of spectroscopic redshifts that extends to faint magnitudes enabled photometric redshifts comparable to the highest quality results presently available for normal galaxies. We demonstrate that morphologically extended, faint X-ray sources without optical variability are more accurately described by a library of normal galaxies (corrected for emission lines) than by AGN-dominated templates, even if these sources have AGN-like X-ray luminosities. Preselecting the library on the bases of the source properties allowed us to reach an accuracy sigma_(Delta z/(1+z_spec)) \sim0.015 with a fraction of outliers of 5.8% for the entire Chandra-COSMOS sample. In addition, we release revised photometric redshifts for the 1735 optical counterparts of the XMM-detected sources over the entire 2 sq. deg.of COSMOS. For 248 sources, our updated photometric redshift differs from the previous release by Delta z>0.2. These changes are predominantly due to the inclusion of newly available deep H-band photometry H_AB=24 mag. We illustrate once again the importance of a spectroscopic training sample and how an assumption about the nature of a source together with the number and the depth of the available bands influence the accuracy of the photometric redshifts determined for AGN. These considerations should be kept in mind when defining the observational strategies of upcoming large surveys targeting AGN, such as eROSITA at X-ray energies and ASKAP/EMU in the radio band., Comment: ApJ, accepted for publication. Data also available at http://www.ipp.mpg.de/~msalv/PHOTOZ_XCOSMOS

Published
2011
Full Text
View/download PDF

2. Obscured AGN at 1.5 <z <3.0 from the zCOSMOS-deep Survey I. Properties of the emitting gas in the narrow-line region

Author

V. Mainieri, M. Bolzonella, Angela Bongiorno, E. Perez Montero, E. Zucca, Roberto Gilli, Simon J. Lilly, Anton M. Koekemoer, Christian Maier, Rongmon Bordoloi, V. Le Brun, Karina Caputi, M. Mignoli, G. Zamorani, Bianca Garilli, Andrea Cimatti, Cristian Vignali, Y. Peng, C. Diener, S. Bardelli, O. Le Fèvre, Anna Feltre, John D. Silverman, Francesco Calura, Istituto Nazionale di Astrofisica, European Research Council, National Key Research and Development Program (China), National Science Foundation (US), Astronomy, ITA, 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 de Recherche Astrophysique de Lyon (CRAL), 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), 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
ACTIVE GALACTIC NUCLEI, EMISSION-LINES, Active galactic nucleus, Radio galaxy, Metallicity, Astrophysics::High Energy Astrophysical Phenomena, MASS-METALLICITY RELATION, galaxies: active, galaxies [x-rays], CHEMICAL EVOLUTION, RADIO GALAXIES, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, LUMINOSITY RELATIONSHIP, 01 natural sciences, formation [line], SUPERMASSIVE BLACK-HOLES, emission lines [quasars], 0103 physical sciences, STAR-FORMING GALAXIES, fundamental parameters [galaxies], Emission spectrum, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, evolution [galaxies], Physics, Supermassive black hole, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, NEBULAR EMISSION, Astronomy and Astrophysics, galaxies: fundamental parameters, Astrophysics - Astrophysics of Galaxies, FUNDAMENTAL RELATION, Galaxy, Redshift, quasars: emission lines, X-rays: galaxies, [SDU]Sciences of the Universe [physics], Space and Planetary Science, active [galaxies], Microturbulence, line: formation, galaxies: evolution
Abstract

The physics and demographics of high-redshift obscured active galactic nuclei (AGN) is still scarcely investigated. New samples of such objects, selected with different techniques, can provide useful insights into their physical properties. Aims. With the goal to determine the properties of the gas in the emitting region of type 2 AGN, in particular, the gas metal content, we exploit predictions from photoionization models, including new parameterizations for the distance of gas distribution from the central source and internal microturbulence in the emitting clouds, to interpret rest-frame UV spectral data. Methods. We selected a sample of 90 obscured (type 2) AGN with 1.45 ≤ z ≤ 3.05 from the zCOSMOS-deep galaxy sample by 5σ detection of the high-ionization C iv λ1549 narrow emission line. This feature in a galaxy spectrum is often associated with nuclear activity, and the selection effectiveness has also been confirmed by diagnostic diagrams based on utraviolet (UV) emission-line ratios. We applied the same selection technique and collected a sample of 102 unobscured (type 1) AGN. Taking advantage of the large amount of multiband data available in the COSMOS field, we investigated the properties of the Civ-selected type 2 AGN, focusing on their host galaxies, X-ray emission, and UV emission lines. Finally, we investigated the physical properties of the ionized gas in the narrow-line region (NLR) of this type 2 AGN sample by combining the analysis of strong UV emission lines with predictions from photoionization models. Results. We find that in order to successfully reproduce the relative intensity of UV emission lines of the selected high-z type 2 AGN, two new ingredients in the photoionization models are fundamental: small inner radii of the NLR (≈90 pc for LAGN = 1045 erg s−1 ), and the internal dissipative microturbulence of the gas-emitting clouds (with vmicr ≈ 100 km s−1 ). With these modified models, we compute the gas-phase metallicity of the NLR, and our measurements indicate a statistically significant evolution of the metal content with redshift. Finally, we do not observe a strong relationship between the NLR gas metallicity and the stellar mass of the host galaxy in our Civ-selected type 2 AGN sample.© ESO 2019, We acknowledge financial support from the agreement ASI-INAF n. 2017-14-H.O. A.F. acknowledges support from the ERC via an Advanced Grant under grant agreement no. 321323-NEOGAL and no. 339659- MUSICOS. A.C. acknowledges the support from the grants PRIN-MIUR 2015 and ASI n.I/023/12/0 and ASI n.2018-23-HH.0. Y.P. acknowledges National Key R&D Program of China Grant 2016YFA0400702, and NSFC Grant No. 11773001 and 11721303.

Published
2019
Full Text
View/download PDF

3. Mass and Environment as Drivers of Galaxy Evolution in SDSS and zCOSMOS and the Origin of the Schechter Function

Author

Anton M. Koekemoer, Pascal Oesch, P. Kampczyk, A. Cappi, Paolo Cassata, Lucia Pozzetti, Angela Bongiorno, E. Zucca, Marco Scodeggio, P. Nair, G. Zamorani, A. Leauthaud, D. Bottini, David B. Sanders, Jean-Paul Kneib, J. F. Le Borgne, Christian Maier, Christian Marinoni, S. Bardelli, Simon J. Lilly, O. Le Fevre, P. Memeo, D. Maccagni, R. Pello, D. Vergani, John D. Silverman, T. Contini, Olga Cucciati, M. Mignoli, G. Hasinger, V. Presotto, Alvio Renzini, B. Meneux, C. Knobel, Graziano Coppa, Olivier Ilbert, Rongmon Bordoloi, Niraj Welikala, V. Le Brun, L. A. M. Tasca, Cristiano Porciani, A. Cimatti, Katarina Kovac, H. J. McCracken, Vincenzo Mainieri, M. Bolzonella, Masaomi Tanaka, Luke A. Barnes, Roberto Scaramella, C. M. Carollo, F. Lamareille, S. de la Torre, P. Franzetti, M. Fumana, E. Ricciardelli, A. Iovino, L. de Ravel, Yingjie Peng, E. Perez Montero, Karina Caputi, U. Abbas, L. Tresse, B. Garilli, Nick Scoville, 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), Y. Peng, S.J. Lilly, K. Kovac, M. Bolzonella, L. Pozzetti, A. Renzini, G. Zamorani, O. Ilbert, C. Knobel, A. Iovino, C. Maier, O. Cucciati, L. Tasca, C. M. Carollo, J. Silverman, P. Kampczyk, L. de Ravel, D. Sander, N. Scoville, T. Contini, V. Mainieri, M. Scodeggio, J.-P. Kneib, O. Le Fevre, S. Bardelli, A. Bongiorno, K. Caputi, G. Coppa, S. de la Torre, P. Franzetti, B. Garilli, F. Lamareille, J.-F. Le Borgne, V. Le Brun, M. Mignoli, E. Perez Montero, R. Pello, E. Ricciardelli, M. Tanaka, L. Tresse, D. Vergani, N. Welikala, E. Zucca, P. Oesch, U. Abba, L. Barne, R. Bordoloi, D. Bottini, A. Cappi, P. Cassata, A. Cimatti, M. Fumana, G. Hasinger, A.M. Koekemoer, A. Leauthaud, D. Maccagni, C. Marinoni, H.J. McCracken, P. Memeo, B. Meneux, P. Nair, C. Porciani, V. Presotto, R. Scaramella, and Astronomy

Subjects
ACTIVE GALACTIC NUCLEI, Cosmology: observations, Galaxies: active, Galaxies: distances and redshifts, Galaxies: evolution, Astronomy and Astrophysics, Space and Planetary Science, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, galaxies: active, FOS: Physical sciences, High density, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, SIMILAR-TO 1, 1ST EPOCH DATA, 0103 physical sciences, Galaxy formation and evolution, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Physics, REDSHIFT SURVEY, FORMING GALAXIES, 010308 nuclear & particles physics, DIGITAL-SKY-SURVEY, VLT DEEP SURVEY, STAR-FORMATION HISTORY, Differential effects, Galaxy, LUMINOSITY FUNCTION, cosmology: observations, galaxies: distances and redshifts, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], galaxies: evolution, STELLAR MASS, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We explore the inter-relationships between mass, star-formation rate and environment in the SDSS, zCOSMOS and other surveys. The differential effects of mass and environment are completely separable to z ~ 1, indicating that two distinct processes are operating, "mass-quenching" and "environment-quenching". Environment-quenching, at fixed over-density, evidently does not change with epoch to z ~ 1, suggesting that it occurs as large-scale structure develops in the Universe. The observed constancy of the mass-function shape for star-forming galaxies, demands that the mass-quenching of galaxies around and above M*, must be proportional to their star-formation rates at all z < 2. We postulate that this simple mass-quenching law also holds over a much broader range of stellar mass and epoch. These two simple quenching processes, plus some additional quenching due to merging, then naturally produce (a) a quasi-static Schechter mass function for star-forming galaxies with a value of M* that is set by the proportionality between the star-formation and mass-quenching rates, (b) a double Schechter function for passive galaxies with two components: the dominant one is produced by mass-quenching and has exactly the same M* as the star-forming galaxies but an alpha shallower by +1, while the other is produced by environment effects and has the same M* and alpha as the star-forming galaxies, and is larger in high density environments. Subsequent merging of quenched galaxies modifies these predictions somewhat in the denser environments, slightly increasing M* and making alpha more negative. All of these detailed quantitative relationships between the Schechter parameters are indeed seen in the SDSS, lending strong support to our simple empirically-based model. The model naturally produces for passive galaxies the "anti-hierarchical" run of mean ages and alpha-element abundances with mass., 66 pages, 19 figures, 1 movie, accepted for publication in ApJ. The movie is also available at http://www.exp-astro.phys.ethz.ch/zCOSMOS/MF_simulation_d1_d4.mov

Published
2010
Full Text
View/download PDF

4. 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
Full Text
View/download PDF

5. The Colors of Central and Satellite Galaxies in zCOSMOS out to z ~ 0.8 and Implications for Quenching

Author

E. Zucca, T. J. Bschorr, J. F. Le Borgne, Daniela Vergani, Andrea Cimatti, Masayuki Tanaka, Christian Maier, Anton M. Koekemoer, P. Kampczyk, Angela Bongiorno, Bianca Garilli, C. López-Sanjuan, Lucia Pozzetti, H. J. McCracken, R. Pello, E. Perez Montero, Graziano Coppa, Niraj Welikala, P. Franzetti, O. Le Fèvre, Olga Cucciati, F. Lamareille, S. de la Torre, Michele Moresco, Simon J. Lilly, Lidia Tasca, C. M. Carollo, S. Bardelli, A. Iovino, V. Presotto, Luke A. Barnes, Laurence Tresse, Karina Caputi, C. Knobel, Gianni Zamorani, L. de Ravel, Alvio Renzini, J. P. Kneib, M. Mignoli, A. Cappi, Preethi Nair, V. Mainieri, M. Bolzonella, John D. Silverman, Rongmon Bordoloi, V. Le Brun, Thierry Contini, Yingjie Peng, K. Kovac, M. Scodeggio, C. Knobel, S. J. Lilly, K. Kovac, Y. Peng, T. J. Bschorr, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fevre, V. Mainieri, A. Renzini, M. Scodeggio, G. Zamorani, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello', E. Perez Montero, V. Presotto, J. Silverman, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, E. Zucca, L. Barne, R. Bordoloi, A. Cappi, A. Cimatti, G. Coppa, A. M. Koekemoer, C. Lopez-Sanjuan, H. J. McCracken, M. Moresco, P. Nair, L. Pozzetti, N. Welikala, Kapteyn Astronomical Institute, C., Knobel, S. J., Lilly, K., Kovač, Y., Peng, T. J., Bschorr, C. M., Carollo, T., Contini, J. P., Kneib, O., Le Fevre, V., Mainieri, A., Renzini, M., Scodeggio, G., Zamorani, S., Bardelli, M., Bolzonella, A., Bongiorno, K., Caputi, O., Cucciati, S., de la Torre, L., de Ravel, P., Franzetti, B., Garilli, A., Iovino, P., Kampczyk, F., Lamareille, J. F., Le Borgne, V., Le Brun, C., Maier, M., Mignoli, R., Pello, E., Perez Montero, Presotto, Valentina, J., Silverman, M., Tanaka, L., Tasca, L., Tresse, D., Vergani, E., Zucca, L., Barne, R., Bordoloi, A., Cappi, A., Cimatti, G., Coppa, A. M., Koekemoer, C., López Sanjuan, H. J., Mccracken, M., Moresco, P., Nair, L., Pozzetti, and N., Welikala

Subjects
GALAXIES: EVOLUTION, statistics [galaxies], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, media_common.quotation_subject, COSMOLOGY: OBSERVATIONS, GALAXIES: STATISTICS, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, STAR-FORMATION, COSMOS SURVEY, 0103 physical sciences, Satellite galaxy, Astrophysics::Solar and Stellar Astrophysics, GALAXIES: LUMINOSITY FUNCTION, 10. No inequality, 010303 astronomy & astrophysics, RED SEQUENCE, evolution [galaxies], Astrophysics::Galaxy Astrophysics, luminosity function [galaxies], media_common, Physics, Quenching, REDSHIFT SURVEY, MASS FUNCTION, groups: general [galaxies], 010308 nuclear & particles physics, Astronomy and Astrophysics, GROUP CATALOG, cosmology: observations, galaxies: evolution, galaxies: groups: general, galaxies: luminosity function, mass function, galaxies: statistics, Redshift, EVOLUTION, Space and Planetary Science, Sky, galaxies: luminosity function, mass function, SPECTROSCOPIC SAMPLE, Physics::Space Physics, STELLAR MASS FUNCTION, DIGITAL SKY SURVEY, Satellite, QUIESCENT GALAXIES, GALAXIES: GROUPS: GENERAL, Astrophysics - Cosmology and Nongalactic Astrophysics, observation [cosmology]
Abstract

We examine the red fraction of central and satellite galaxies in the large zCOSMOS group catalog out to z ~ 0.8 correcting for both the incompleteness in stellar mass and for the less than perfect purities of the central and satellite samples. We show that, at all masses and at all redshifts, the fraction of satellite galaxies that have been quenched, i.e., are red, is systematically higher than that of centrals, as seen locally in the Sloan Digital Sky Survey (SDSS). The satellite quenching efficiency, which is the probability that a satellite is quenched because it is a satellite rather than a central, is, as locally, independent of stellar mass. Furthermore, the average value is about 0.5, which is also very similar to that seen in the SDSS. We also construct the mass functions of blue and red centrals and satellites and show that these broadly follow the predictions of the Peng et al. analysis of the SDSS groups. Together, these results indicate that the effect of the group environment in quenching satellite galaxies was very similar when the universe was about a half its present age, as it is today., Comment: 11 pages, 6 figures, published in ApJ

Published
2012
Full Text
View/download PDF

6. Comparison of star formation rates from Hα and infrared luminosity as seen byHerschel

Author

H. Domínguez Sánchez, M. Mignoli, F. Pozzi, F. Calura, A. Cimatti, C. Gruppioni, J. Cepa, M. Sánchez Portal, G. Zamorani, S. Berta, D. Elbaz, E. Le Floc'h, G. L. Granato, D. Lutz, R. Maiolino, F. Matteucci, P. Nair, R. Nordon, L. Pozzetti, L. Silva, J. Silverman, S. Wuyts, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fèvre, S. J. Lilly, V. Mainieri, A. Renzini, M. Scodeggio, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, G. Coppa, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, C. Knobel, K. Kovač, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, B. Magnelli, R. Pelló, Y. Peng, E. Perez-Montero, E. Ricciardelli, L. Riguccini, M. Tanaka, L. A. M. Tasca, L. Tresse, D. Vergani, and E. Zucca

Subjects
Physics, Spiral galaxy, 010504 meteorology & atmospheric sciences, Star formation, Metallicity, Extinction (astronomy), Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Redshift, Galaxy, Luminosity, Space and Planetary Science, 0103 physical sciences, Emission spectrum, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences
Abstract

We empirically test the relation between the SFR(LIR) derived from the infrared luminosity, LIR, and the SFR(Ha) derived from the Ha emission line luminosity using simple conversion relations. We use a sample of 474 galaxies at z = 0.06 - 0.46 with both Ha detection (from 20k zCOSMOS survey) and new far-IR Herschel data (100 and 160 {\mu}m). We derive SFR(Ha) from the Ha extinction corrected emission line luminosity. We find a very clear trend between E(B - V) and LIR that allows to estimate extinction values for each galaxy even if the Ha emission line measurement is not reliable. We calculate the LIR by integrating from 8 up to 1000 {\mu}m the SED that is best fitting our data. We compare SFR(Ha) with the SFR(LIR). We find a very good agreement between the two SFR estimates, with a slope of m = 1.01 \pm 0.03 in the SFR(LIR) vs SFR(Ha) diagram, a normalization constant of a = -0.08 \pm 0.03 and a dispersion of sigma = 0.28 dex.We study the effect of some intrinsic properties of the galaxies in the SFR(LIR)-SFR(Ha) relation, such as the redshift, the mass, the SSFR or the metallicity. The metallicity is the parameter that affects most the SFR comparison. The mean ratio of the two SFR estimators log[SFR(LIR)/SFR(Ha)] varies by approx. 0.6 dex from metal-poor to metal-rich galaxies (8.1 < log(O/H) + 12 < 9.2). This effect is consistent with the prediction of a theoretical model for the dust evolution in spiral galaxies. Considering different morphological types, we find a very good agreement between the two SFR indicators for the Sa, Sb and Sc morphologically classified galaxies, both in slope and normalization. For the Sd, irregular sample (Sd/Irr), the formal best-fit slope becomes much steeper (m = 1.62 \pm 0.43), but it is still consistent with 1 at the 1.5 sigma level, because of the reduced statistics of this sub-sample.

Published
2012
Full Text
View/download PDF

7. 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
Full Text
View/download PDF

8. 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
Full Text
View/download PDF

9. Proto-groups at 1.8<z<3 in the zCOSMOS-deep sample

Author

C. Diener, S. J. Lilly, C. Knobel, G. Zamorani, G. Lemson, P. Kampczyk, N. Scoville, C. M. Carollo, T. Contini, J. P. Kneib, O. Le Fevre, V. Mainieri, A. Renzini, M. Scodeggio, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, K. Kovac, F. Lamareille, J. F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello', Y. Peng, E. Perez Montero, V. Presotto, J. Silverman, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, E. Zucca, R. Bordoloi, A. Cappi, G. Coppa, A. M. Koekemoer, C. Lopez Sanjuan, H. J. McCracken, P. Nair, L. Pozzetti, N. Welikala, CUCCIATI, OLGA, CIMATTI, ANDREA, MORESCO, MICHELE ENNIO MARIA, C. Diener, S. J. Lilly, C. Knobel, G. Zamorani, G. Lemson, P. Kampczyk, N. Scoville, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fevre, V. Mainieri, A. Renzini, M. Scodeggio, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, K. Kovac, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello', Y. Peng, E. Perez Montero, V. Presotto, J. Silverman, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, E. Zucca, R. Bordoloi, A. Cappi, A. Cimatti, G. Coppa, A. M. Koekemoer, C. Lopez-Sanjuan, H. J. McCracken, M. Moresco, P. Nair, L. Pozzetti, and N. Welikala

Subjects
CATALOGS, GALAXIES: GROUPS: GENERAL, GALAXIES: HIGH-REDSHIFT, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We identify 42 "candidate groups" lying between 1.8 < z < 3.0 from a sample of 3502 galaxies with spectroscopic redshifts in the zCOSMOS-deep redshift survey within this same redshift interval. These systems contain three to five spectroscopic galaxies that lie within 500 kpc in projected distance (in physical space) and within 700 km s–1 in velocity. Based on extensive analysis of mock catalogs that have been generated from the Millennium simulation, we examine the likely nature of these systems at the time of observation, and what they will evolve into down to the present epoch. Although few of the "member" galaxies are likely to reside in the same halo at the epoch we observe them, 50% of the systems will have, by the present epoch, all of the member galaxies in the same halo, and almost all (93%) will have at least some of the potential members in the same halo. Most of the candidate groups can therefore be described as "proto-groups." A crude estimate of the overdensities of these structures is also consistent with the idea that these systems are being seen as they assemble. We also examine present-day halos and ask whether their progenitors would have been seen among our candidate groups. For present-day halos between 1014 and 1015 M ⊙ h –1, 35% should have appeared among our candidate groups, and this would have risen to 70% if our survey had been fully sampled, so we can conclude that our sample can be taken as representative of a large fraction of such systems. There is a clear excess of massive galaxies above 1010 M ⊙ around the locations of the candidate groups in a large independent COSMOS photo-z sample, but we see no evidence in this latter data for any color differentiation with respect to the field. This is, however, consistent with the idea that such differentiation arises in satellite galaxies, as indicated at z < 1, if the candidate groups are indeed only starting to be assembled.

Published
2012

10. A GROUP-GALAXY CROSS-CORRELATION FUNCTION ANALYSIS IN zCOSMOS

Author

H. J. McCracken, Lucia Pozzetti, Daniela Vergani, L. de Ravel, Rongmon Bordoloi, A. Iovino, E. Perez Montero, Anton M. Koekemoer, Preethi Nair, C. López-Sanjuan, Olga Cucciati, S. de la Torre, Angela Bongiorno, Simon J. Lilly, C. M. Carollo, E. Zucca, S. Bardelli, Karina Caputi, Andrea Cimatti, P. Kampczyk, M. Scodeggio, P. Franzetti, V. Mainieri, M. Bolzonella, V. Presotto, R. Pello, V. Le Brun, Y. Peng, Thierry Contini, Laurence Tresse, Graziano Coppa, J. F. Le Borgne, G. Zamorani, Michele Moresco, Masayuki Tanaka, O. Le Fèvre, Lidia Tasca, Bianca Garilli, M. Mignoli, John D. Silverman, C. Knobel, K. Kovac, Christian Maier, A. Cappi, Jean-Paul Kneib, Alvio Renzini, Niraj Welikala, F. Lamareille, Luke A. Barnes, AUTRES, 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), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), Istituto Nazionale di Astrofisica (INAF), Hunan Normal University (HNU), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Università degli studi di Trieste = University of Trieste, INAF - Osservatorio Astronomico di Trieste (OAT), INAF - Osservatorio Astrofisico di Arcetri (OAA), INAF - Osservatorio Astronomico di Brera (OAB), 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 Astronomia, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Space Telescope Science Institute (STSci), 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 Astronomico di Bologna (OABO), Institute for Astronomy [Zürich], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), University of Chicago, European Southern Observatory (ESO), INAF - Osservatorio Astronomico di Padova (OAPD), INAF- Milano, College of Computing (GATECH), Georgia Institute of Technology [Atlanta], Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), C. Knobel, S. J. Lilly, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fevre, V. Mainieri, A. Renzini, M. Scodeggio, G. Zamorani, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, K. Kovac, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello, Y. Peng, E. Perez Montero, V. Presotto, J. Silverman, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, E. Zucca, L. Barne, R. Bordoloi, A. Cappi, A. Cimatti, G. Coppa, A. M. Koekemoer, C. Lopez-Sanjuan, H. J. McCracken, M. Moresco, P. Nair, L. Pozzetti, N. Welikala, Kapteyn Astronomical Institute, 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Hunan Normal University, 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, Università degli studi di Trieste, 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), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI)

Subjects
ANALYTIC MODEL, EXTRAGALACTIC OBJECTS, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Structure formation, Field (physics), FOS: Physical sciences, Astrophysics, STATISTICAL-ANALYSIS, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmology, 010305 fluids & plasmas, galaxies: groups: general, 0103 physical sciences, EQUAL-TO 1, 010303 astronomy & astrophysics, galaxies: statistics, Astrophysics::Galaxy Astrophysics, Physics, large-scale structure of universe, REDSHIFT SURVEY, MASS FUNCTION, COSMIC cancer database, Cross-correlation, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Group (mathematics), Astronomy and Astrophysics, GROUP CATALOG, Redshift, Galaxy, COSMOS FIELD, BIAS, Space and Planetary Science, galaxies: clusters: general, DARK-MATTER HALOES, cosmology: observations, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a group-galaxy cross-correlation analysis using a group catalog produced from the 16,500 spectra from the optical zCOSMOS galaxy survey. Our aim is to perform a consistency test in the redshift range 0.2 < z < 0.8 between the clustering strength of the groups and mass estimates that are based on the richness of the groups. We measure the linear bias of the groups by means of a group-galaxy cross-correlation analysis and convert it into mass using the bias-mass relation for a given cosmology, checking the systematic errors using realistic group and galaxy mock catalogs. The measured bias for the zCOSMOS groups increases with group richness as expected by the theory of cosmic structure formation and yields masses that are reasonably consistent with the masses estimated from the richness directly, considering the scatter that is obtained from the 24 mock catalogs. An exception are the richest groups at high redshift (estimated to be more massive than 10^13.5 M_sun), for which the measured bias is significantly larger than for any of the 24 mock catalogs (corresponding to a 3-sigma effect), which is attributed to the extremely large structure that is present in the COSMOS field at z ~ 0.7. Our results are in general agreement with previous studies that reported unusually strong clustering in the COSMOS field., 13 pages, 9 figures, published in ApJ

Published
2012
Full Text
View/download PDF

11. zCOSMOS - 10k-bright spectroscopic sample. The bimodality in the Galaxy Stellar Mass Function: exploring its evolution with redshift

Author

L. Pozzetti, M. Bolzonella, E. Zucca, G. Zamorani, S. Lilly, A. Renzini, M. Moresco, M. Mignoli, P. Cassata, L. Tasca, F. Lamareille, C. Maier, B. Meneux, C. Halliday, P. Oesch, D. Vergani, K. Caputi, K. Kovač, A. Cimatti, O. Cucciati, A. Iovino, Y. Peng, M. Carollo, T. Contini, J.-P. Kneib, O. Le Févre, V. Mainieri, M. Scodeggio, S. Bardelli, A. Bongiorno, G. Coppa, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, P. Kampczyk, C. Knobel, J.-F. Le Borgne, V. Le Brun, R. Pellò, E. Perez Montero, E. Ricciardelli, J. D. Silverman, M. Tanaka, L. Tresse, U. Abbas, D. Bottini, A. Cappi, L. Guzzo, A. M. Koekemoer, A. Leauthaud, D. Maccagni, C. Marinoni, H. J. McCracken, P. Memeo, C. Porciani, R. Scaramella, C. Scarlata, N. Scoville, INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Università di Bologna, Dipartimento di Astronomia, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), INAF - Osservatorio Astronomico di Brera (OAB), AUTRES, 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 - Osservatorio Astrofisico di Arcetri (OAA), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), 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), Department of Physics and Astronomy [UCLA Los Angeles], University of California [Los Angeles] (UCLA), University of California-University of California, 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, INAF- Milano, 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, 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), 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), University of California (UC)-University of California (UC), 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), L. Pozzetti, M. Bolzonella, E. Zucca, G. Zamorani, S. Lilly, A. Renzini, M. Moresco, M. Mignoli, P. Cassata, L. Tasca, F. Lamareille, C. Maier, B. Meneux, C. Halliday, P. Oesch, D. Vergani, K. Caputi, K. Kovac, A. Cimatti, O. Cucciati, A. Iovino, Y. Peng, M. Carollo, T. Contini, J.P. Kneib, O. Le F'evre, V. Mainieri, M. Scodeggio, S. Bardelli, A. Bongiorno, G. Coppa, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, P. Kampczyk, C. Knobel, J.F. Le Borgne, V. Le Brun, R. Pell`o, E. Perez Montero, E. Ricciardelli, J.D. Silverman, M. Tanaka, L. Tresse, U. Abba, D. Bottini, A. Cappi, L. Guzzo, A.M. Koekemoer, A. Leauthaud, D. Maccagni, C. Marinoni, H.J. McCracken, P. Memeo, C. Porciani, R. Scaramella, C. Scarlata, N. Scoville, and Astronomy

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmology and Nongalactic Astrophysics (astro-ph.CO), EXTREMELY RED GALAXIES, Stellar mass, EARLY DATA RELEASE, galaxies: evolution, galaxies: formation, galaxies: luminosity function, mass function, galaxies: statistics, Astronomy and Astrophysics, Space and Planetary Science, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, SIMILAR-TO 1, 01 natural sciences, 0103 physical sciences, STAR-FORMING GALAXIES, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, FORMATION HISTORY, education.field_of_study, Number density, Spiral galaxy, 010308 nuclear & particles physics, Star formation, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], VLT DEEP SURVEY, DISK GALAXIES, Redshift, Galaxy, COSMOS FIELD, Stars, galaxies: luminosity function, LUMINOSITY FUNCTION, mass function, DIGITAL SKY SURVEY, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the Galaxy Stellar Mass Function (MF) up to z~1 from the zCOSMOS-bright 10k spectroscopic sample. We investigate the total MF and the contribution of ETGs and LTGs, defined by different criteria (SED, morphology or star formation). We unveil a galaxy bimodality in the global MF, better represented by 2 Schechter functions dominated by ETGs and LTGs, respectively. For the global population we confirm that low-mass galaxies number density increases later and faster than for massive galaxies. We find that the MF evolution at intermediate-low values of Mstar (logM, Revised version, accepted for publication on Astronomy and Astrophysics

Published
2010
Full Text
View/download PDF

12. The spatial clustering of X-ray selected AGN in the XMM-COSMOS field

Author

E. Zucca, Andrea Comastri, C. Knobel, O. Le Fèvre, S. de la Torre, N. Z. Scoville, Francesca Civano, Fabrizio Fiore, Alexie Leauthaud, J. F. Le Borgne, Roberto Gilli, Chris Impey, L. de Ravel, M. Mignoli, Alessandro Cimatti, F. Lamareille, M. Bolzonella, Roberto Scaramella, Takamitsu Miyaji, G. Zamorani, Günther Hasinger, J. Walcher, Lidia Tasca, M. Fumana, Jean-Paul Kneib, P. Memeo, V. Le Brun, D. Maccagni, Angela Bongiorno, K. Kovac, S. Bardelli, Christian Maier, M. Scodeggio, Daniela Vergani, Nico Cappelluti, P. Franzetti, Christian Marinoni, H. J. McCracken, D. Bottini, A. Iovino, P. Kampczyk, E. Perez Montero, Olga Cucciati, Laurence Tresse, R. Pello, Jonathan R. Trump, Y. Peng, Luigi Guzzo, E. Ricciardelli, Emanuele Daddi, Cristiano Porciani, Cristian Vignali, Thierry Contini, Mara Salvato, Masayuki Tanaka, Alexis Finoguenov, Graziano Coppa, Paolo Cassata, Lucia Pozzetti, John D. Silverman, Vincenzo Mainieri, Peter Capak, C. M. Carollo, Marcella Brusa, Bianca Garilli, B. Meneux, Simon J. Lilly, Karina Caputi, Alvio Renzini, Pascal Oesch, A. Cappi, U. Abbas, Yoshiaki Taniguchi, Astronomy, California Institute of Technology (CALTECH), 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 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 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), 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), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), R. Gilli, G. Zamorani, T. Miyaji, J. Silverman, M. Brusa, V. Mainieri, N. Cappelluti, E. Daddi, C. Porciani, L. Pozzetti, F. Civano, A. Comastri, A. Finoguenov, F. Fiore, M. Salvato, C. Vignali, G. Hasinger, S. Lilly, C. Impey, J. Trump, P. Capak, H. McCracken, N. Scoville, Y. Taniguchi, C.M. Carollo, T. Contini, J.-P. Kneib, O. LeFevre, A. Renzini, M. Scodeggio, S. Bardelli, M. Bolzonella, A. Bongiorno, K. Caputi, A. Cimatti, G. Coppa, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, C. Knobel, K. Kovac, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, M. Mignoli, R. Pello', Y. Peng, E. Perez Montero, E. Ricciardelli, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, E. Zucca, U. Abba, D. Bottini, A. Cappi, P. Cassata, M. Fumana, L. Guzzo, A. Leauthaud, D. Maccagni, C. Marinoni, P. Memeo, B. Meneux, P. Oesch, R. Scaramella, and J. Walcher

Subjects
QSOS, ACTIVE GALACTIC NUCLEI, Stellar mass, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, 2-POINT CORRELATION-FUNCTION, Large-scale structure of universe, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Power law, Luminosity, SUPERMASSIVE BLACK-HOLES, GALAXY REDSHIFT SURVEY, 0103 physical sciences, STAR-FORMING GALAXIES, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Physics, EVOLUTION SURVEY COSMOS, galaxies: active – cosmology: large-scale structure of Universe – cosmology: observations – X-rays: galaxies, 010308 nuclear & particles physics, Cosmology, Cosmology: observations, Galaxies: active, X-rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, POINT-SOURCE CATALOGS, cosmology: large-scale structure of Universe, Universe, Galaxy, Redshift, Correlation function (statistical mechanics), LUMINOSITY FUNCTION, cosmology: observations, DIGITAL SKY SURVEY, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], ANGULAR-CORRELATION
Abstract

We study the spatial clustering of 538 X-ray selected AGN in the 2 deg^2 XMM-COSMOS field that are spectroscopically identified to I_{AB} 3 x 10^{10} M_sun) at the same redshift. This suggests that AGN at z~1 are preferentially hosted by massive galaxies, as observed both in the local and in the distant (z~2) Universe. (shortened), Comment: 16 pages, 11 figures; accepted for publication in A&A. Language edited version

Published
2009
Full Text
View/download PDF

13. The zCOSMOS redshift survey : evolution of the light in bulges and discs since z ~ 0.8

Author

Luis C. Ho, O. Le Fevre, H. J. McCracken, P. Franzetti, Anton M. Koekemoer, R. Pello, E. Zucca, A. Cappi, A. Cattaneo, Niraj Welikala, A. Iovino, K. Kovavc, Alvio Renzini, J. F. Le Borgne, R. M. Rich, M. Mignoli, B. Garilli, T. Contini, Yoshiaki Taniguchi, Graziano Coppa, Jean-Paul Kneib, Masaomi Tanaka, C. Lopez-Sanjuan, E. Perez Montero, P. Kampczyk, Vincenzo Mainieri, Andrea Cimatti, F. Lamareille, Richard Massey, Marco Scodeggio, Angela Bongiorno, Rongmon Bordoloi, Y. Peng, L. Tresse, L. A. M. Tasca, C. Knobel, S. Bardelli, Duncan Farrah, Kartik Sheth, Christian Maier, D. Vergani, Michele Moresco, O. Cucciati, S. de la Torre, K. Caputi, C. M. Carollo, M. Bolzonella, Lucia Pozzetti, G. Zamorani, C. T. Liu, D. B. Sanders, Simon J. Lilly, Luigi Guzzo, V. Le Brun, O. Ilbert, Astronomy, Tasca, L.A.M., Tresse, L., Le Fèvre, O., Ilbert, O., Lilly, S.J., Zamorani, G., López-Sanjuan, C., Ho, L.C., Bardelli, S., Cattaneo, A., Cucciati, O., Farrah, D., Iovino, A., Koekemoer, A.M., Liu, C.T., Massey, R., Renzini, A., Taniguchi, Y., Welikala, N., Zucca, E., Carollo, C.M., Contini, T., Kneib, J.-P., Mainieri, V., Scodeggio, M., Bolzonella, M., Bongiorno, A., Caputi, K., De La Torre, S., Franzetti, P., Garilli, B., Guzzo, L., Kampczyk, P., Knobel, C., Kovač, K., Lamareille, F., Le Borgne, J.-F., Le Brun, V., Maier, C., Mignoli, M., Pello, R., Peng, Y., Perez Montero, E., Rich, R.M., Tanaka, M., Vergani, D., Bordoloi, R., Cappi, A., Cimatti, A., Coppa, G., Mccracken, H.J., Moresco, M., Pozzetti, L., Sanders, D., and Sheth, K.

Subjects
Galaxies: fundamental parameter, FORMING GALAXY, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, MASS, fundamental parameters. [Galaxies], LUMINOSITY FUNCTIONS, galaxies: bulges, STAR-FORMATION RATE, Luminosity, ADVANCED CAMERA, bulges [Galaxies], Bulge, distances and redshifts [Galaxies], Galaxies: distances and redshift, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics, Physics, FORMATION HISTORY, Star formation, Astronomy and Astrophysics, galaxies: fundamental parameters, HUBBLE-SPACE-TELESCOPE, VLT DEEP SURVEY, Astronomy and Astrophysic, Redshift survey, evolution [Galaxies], Astrophysics - Astrophysics of Galaxies, luminosity function [Galaxies], Redshift, Galaxy, Stars, galaxies: luminosity function, Space and Planetary Science, mass function, Astrophysics of Galaxies (astro-ph.GA), galaxies: luminosity function, mass function, Astrophysics::Earth and Planetary Astrophysics, GALAXY FORMATION, galaxies: distances and redshifts, Irregular galaxy, galaxies: evolution, Galaxies: bulge, SURVEY COSMOS
Abstract

We studied the chronology of galactic bulge and disc formation by analysing the relative contributions of these components to the B-band rest-frame luminosity density at different epochs. We present the first estimate of the evolution of the fraction of rest-frame B-band light in galactic bulges and discs since redshift z~0.8. We performed a bulge-to-disc decomposition of HST/ACS images of 3266 galaxies in the zCOSMOS-bright survey with spectroscopic redshifts in the range 0.7 < z < 0.9. We find that the fraction of B-band light in bulges and discs is $(26 \pm 4)%$ and $(74 \pm 4)%$, respectively. When compared with rest-frame B-band measurements of galaxies in the local Universe in the same mass range ($10^{9} M_{\odot}\lessapprox M \lessapprox 10^{11.5} M_{\odot}$), we find that the B-band light in discs decreases by ~30% from z~0.7-0.9 to z~0, while the light from the bulge increases by ~30% over the same period of time. We interpret this evolution as the consequence of star formation and mass assembly processes, as well as morphological transformation, which gradually shift stars formed at half the age of the Universe from star-forming late-type/irregular galaxies toearlier types and ultimately into spheroids., Letter to the Editor, 4 pages, 2 figures, accepted for publication in Astronomy and Astrophysics

Published
2014

14. 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

15. 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
Full Text
View/download PDF

16. ENVIRONMENTAL EFFECTS IN THE INTERACTION AND MERGING OF GALAXIES IN zCOSMOS

Author

P. Kampczyk, S. J. Lilly, L. de Ravel, O. Le Fèvre, M. Bolzonella, C. M. Carollo, C. Diener, C. Knobel, K. Kovač, C. Maier, A. Renzini, M. T. Sargent, D. Vergani, U. Abbas, S. Bardelli, A. Bongiorno, R. Bordoloi, K. Caputi, T. Contini, G. Coppa, O. Cucciati, S. de la Torre, P. Franzetti, B. Garilli, A. Iovino, J.-P. Kneib, A. M. Koekemoer, F. Lamareille, J.-F. Le Borgne, V. Le Brun, A. Leauthaud, V. Mainieri, M. Mignoli, R. Pello, Y. Peng, E. Perez Montero, E. Ricciardelli, M. Scodeggio, J. D. Silverman, M. Tanaka, L. Tasca, L. Tresse, G. Zamorani, E. Zucca, D. Bottini, A. Cappi, P. Cassata, A. Cimatti, M. Fumana, L. Guzzo, J. Kartaltepe, C. Marinoni, H. J. McCracken, P. Memeo, B. Meneux, P. Oesch, C. Porciani, L. Pozzetti, R. Scaramella, AUTRES, Institute for Astronomy [Zürich], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), 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), University of Chicago, Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astrofisico di Torino (OATo), College of Computing (GATECH), Georgia Institute of Technology [Atlanta], 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), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut de recherche en astrophysique et planétologie (IRAP), California Institute of Technology (CALTECH), European Southern Observatory (ESO), Hunan Normal University (HNU), 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), National Optical Astronomy Observatory (NOAO), 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), 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), Astronomy, 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, 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, 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), 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), Hunan Normal University, 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), 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 National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Kampczyk P., Lilly S. J., de Ravel L., Le Fèvre O., Bolzonella M., Carollo C. M., Diener C., Knobel C., Kovac K., Maier C., Renzini A., Sargent M. T., Vergani D., Abbas U., Bardelli S., Bongiorno A., Bordoloi R., Caputi K., Contini T., Coppa G., Cucciati O., de la Torre S., Franzetti P., Garilli B., Iovino A., Kneib J.-P., Koekemoer A. M., Lamareille F., Le Borgne J.-F., Le Brun V., Leauthaud A., Mainieri V., Mignoli M., Pello R., Peng Y., Perez Montero E., Ricciardelli E., Scodeggio M., Silverman J. D., Tanaka M., Tasca L., Tresse L., Zamorani G., Zucca E., Bottini D., Cappi A., Cassata P., Cimatti A., Fumana M., Guzzo L., Kartaltepe J., Marinoni C., McCracken H. J., Memeo P., Meneux B., Oesch P., Porciani C., Pozzetti L., and Scaramella R.

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010504 meteorology & atmospheric sciences, Population, FOS: Physical sciences, galaxies: starburst, MORPHOLOGICAL TRANSFORMATION, Astrophysics, Kinematics, Astrophysics::Cosmology and Extragalactic Astrophysics, STAR-FORMATION RATES, MERGER RATE EVOLUTION, 01 natural sciences, SIMILAR-TO 1, galaxies: evolution, galaxies: general, galaxies: interactions, Astronomy and Astrophysics, Space and Planetary Science, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Fraction (mathematics), education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, QB, Physics, education.field_of_study, FORMATION HISTORY, Star formation, CLOSE PAIRS, Cosmology: observations, Galaxies: high-redshift, Galaxies: statistics, Large-scale structure of Universe, CNOC2 REDSHIFT SURVEY, DISK GALAXIES, Environmental variation, Galaxy, Redshift, COSMOS FIELD, DIGITAL SKY SURVEY, Irregular galaxy, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

(Abridged) We analyze the environments and galactic properties (morphologies and star-formation histories) of a sample of 153 close kinematic pairs in the redshift range 0.2 < z < 1 identified in the zCOSMOS-bright 10k spectroscopic sample of galaxies. Correcting for projection effects, the fraction of close kinematic pairs is three times higher in the top density quartile than in the lowest one. This translates to a three times higher merger rate because the merger timescales are shown, from mock catalogues based on the Millennium simulation, to be largely independent of environment once the same corrections for projection is applied. We then examine the morphologies and stellar populations of galaxies in the pairs, comparing them to control samples that are carefully matched in environment so as to remove as much as possible the well-known effects of environment on the properties of the parent population of galaxies. Once the environment is properly taken into account in this way, we find that the early-late morphology mix is the same as for the parent population, but that the fraction of irregular galaxies is boosted by 50-75%, with a disproportionate increase in the number of irregular-irregular pairs (factor of 4-8 times), due to the disturbance of disk galaxies. Future dry-mergers, involving elliptical galaxies comprise less than 5% of all close kinematic pairs. In the closest pairs, there is a boost in the specific star-formation rates of star-forming galaxies of a factor of 2-4, and there is also evidence for an increased incidence of post star-burst galaxies. Although significant for the galaxies involved, the "excess" star-formation associated with pairs represents only about 5% of the integrated star-formation activity in the parent sample. Although most pair galaxies are in dense environments, the effects of interaction appear to be largest in the lower density environments., 38 pages, 17 figures, submitted to ApJ

Published
2013
Full Text
View/download PDF

17. The zCOSMOS 20k Group Catalog

Author

P. Kampczyk, Laurence Tresse, Rongmon Bordoloi, R. Pello, J. F. Le Borgne, Michele Moresco, V. Le Brun, Anton M. Koekemoer, Andrea Cimatti, Lidia Tasca, S. de la Torre, C. López-Sanjuan, Graziano Coppa, A. Iovino, Christian Maier, Y. Peng, Niraj Welikala, Bianca Garilli, E. Zucca, Thierry Contini, T. J. Bschorr, Daniela Vergani, M. Mignoli, F. Lamareille, G. Zamorani, Olga Cucciati, V. Mainieri, C. M. Carollo, M. Bolzonella, E. Perez Montero, Jean-Paul Kneib, Preethi Nair, M. Scodeggio, S. Lilly, P. Franzetti, S. Bardelli, C. Knobel, H. J. McCracken, A. Cappi, Luke A. Barnes, K. Kovac, Alvio Renzini, L. de Ravel, Masayuki Tanaka, Karina Caputi, Pascal Oesch, O. Le Fèvre, V. Presotto, Lucia Pozzetti, Angela Bongiorno, John D. Silverman, Astronomy, 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), 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), Knobel C., Lilly S. J., Iovino A., Kova&#269, K., Bschorr T. J., Presotto V., Oesch P. A., Kampczyk P., Carollo C. M., Contini T., Kneib J.-P., Le Fevre O., Mainieri V., Renzini A., Scodeggio M., Zamorani G., Bardelli S., Bolzonella M., Bongiorno A., Caputi K., Cucciati O., de la Torre S., de Ravel L., Franzetti P., Garilli B., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Mignoli M., Pello R., Peng Y., Perez Montero E., Silverman J., Tanaka M., Tasca L., Tresse L., Vergani D., Zucca E., Barnes L., Bordoloi R., Cappi A., Cimatti A, Coppa G., Koekemoer A. M., López-Sanjuan C., McCracken H. J., Moresco M., Nair P., Pozzetti L., and Welikala N.

Subjects
ACTIVE GALACTIC NUCLEI, Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, SIMILAR-TO 1, Gravitational potential, GALAXY REDSHIFT SURVEY, galaxies: groups: general, 0103 physical sciences, Satellite galaxy, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, PHOTOMETRIC REDSHIFTS, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Physics, large-scale structure of universe, MASS FUNCTION, COSMIC cancer database, 010308 nuclear & particles physics, Group (mathematics), Astronomy and Astrophysics, VLT DEEP SURVEY, Billion years, methods: data analysis, Galaxy, Redshift, EVOLUTION, COSMOS FIELD, catalogs, cosmology: observations, galaxies: evolution, galaxies: groups: general, large-scale structure of universe, methods: data analysis, STELLAR, GROUP ENVIRONMENT, Space and Planetary Science, cosmology: observations, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], galaxies: evolution, Cosmic time, catalogs, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present an optical group catalog between 0.1 < z < 1 based on 16,500 high-quality spectroscopic redshifts in the completed zCOSMOS-bright survey. The catalog published herein contains 1498 groups in total and 192 groups with more than five observed members. The catalog includes both group properties and the identification of the member galaxies. Based on mock catalogs, the completeness and purity of groups with three and more members should be both about 83% with respect to all groups that should have been detectable within the survey, and more than 75% of the groups should exhibit a one-to-one correspondence to the "real" groups. Particularly at high redshift, there are apparently more galaxies in groups in the COSMOS field than expected from mock catalogs. We detect clear evidence for the growth of cosmic structure over the last seven billion years in the sense that the fraction of galaxies that are found in groups (in volume-limited samples) increases significantly with cosmic time. In the second part of the paper, we develop a method for associating galaxies that only have photo-z to our spectroscopically identified groups. We show that this leads to improved definition of group centers, improved identification of the most massive galaxies in the groups, and improved identification of central and satellite galaxies, where we define the former to be galaxies at the minimum of the gravitational potential wells. Subsamples of centrals and satellites in the groups can be defined with purities up to 80%, while a straight binary classification of all group and non-group galaxies into centrals and satellites achieves purities of 85% and 75%, respectively, for the spectroscopic sample., 26 pages, 21 figures, published in ApJ (along with machine-readable tables)

Published
2012
Full Text
View/download PDF

18. Ionization structure and chemical abundances of the Wolf-Rayet nebula NGC6888 with integral field spectroscopy

Author

E. Perez Montero, D. Martín-Gordón, José M. Vílchez, A. Fernández-Martín, Sebastián F. Sánchez, and Angels Riera

Subjects
Physics, Electron density, Nebula, Extinction (astronomy), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics - Astrophysics of Galaxies, Interstellar medium, Radial velocity, Wolf–Rayet star, Space and Planetary Science, Ionization, Astrophysics of Galaxies (astro-ph.GA), Electron temperature, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

This work aims to search for the observational footprints of the interactions between the interstellar medium (ISM) and stellar winds in the Wolf-Rayet (WR) nebula NGC6888 in order to understand its ionization structure, chemical composition, and kinematics. We have collected a set of integral field spectroscopy observations across NGC6888, obtained with PPAK in the optical range performing both 2D and 1D analyses. Attending to the 2D analysis in the northeast part of NGC6888, we have generated maps of the extinction structure and electron density. We produced statistical frequency distributions of the radial velocity and diagnostic diagrams. We have found that the spectra of a localized region to the southwest of this pointing can be represented well by shock models. Furthermore, we performed a thorough study of integrated spectra in nine regions over the whole nebula. We derived electron densities ranging from, Accepted for publication in Section 6. of Astronomy and Astrophysics. The official date of acceptance is 22/02/2012. 18 pages, 15 figures and 4 tables

Published
2012
Full Text
View/download PDF

19. Dissecting Photometric Redshift for Active Galactic Nucleus Using XMM- and Chandra-COSMOS Samples

Author

M. Salvato, O. Ilbert, G. Hasinger, A. Rau, F. Civano, G. Zamorani, M. Brusa, M. Elvis, C. Vignali, H. Aussel, A. Comastri, F. Fiore, E. Le Floc'h, V. Mainieri, S. Bardelli, M. Bolzonella, A. Bongiorno, P. Capak, K. Caputi, N. Cappelluti, C. M. Carollo, T. Contini, B. Garilli, A. Iovino, S. Fotopoulou, A. Fruscione, R. Gilli, C. Halliday, J.-P. Kneib, Y. Kakazu, J. S. Kartaltepe, A. M. Koekemoer, K. Kovac, Y. Ideue, H. Ikeda, C. D. Impey, O. Le Fevre, F. Lamareille, G. Lanzuisi, J.-F. Le Borgne, V. Le Brun, S. Lilly, C. Maier, S. Manohar, D. Masters, H. McCracken, H. Messias, M. Mignoli, B. Mobasher, T. Nagao, R. Pello, S. Puccetti, E. Perez-Montero, A. Renzini, M. Sargent, D. B. Sanders, M. Scodeggio, N. Scoville, P. Shopbell, J. Silvermann, Y. Taniguchi, L. Tasca, L. Tresse, J. R. Trump, E. Zucca, Astronomy, Salvato M., Ilbert O., Hasinger G., Rau A., Civano F., Zamorani G., Brusa M., Elvis M., Vignali C., Aussel H., Comastri A., Fiore F., Le Floc'h E., Mainieri V., Bardelli S., Bolzonella M., Bongiorno A., Capak P., Caputi K., Cappelluti N., Carollo C. M., Contini T., Garilli B., Iovino A., Fotopoulou S., Fruscione A., Gilli R., Halliday C., Kneib J.-P., Kakazu Y., Kartaltepe J. S., Koekemoer A. M., Kovac K., Ideue Y., Ikeda H., Impey C. D., Le Fevre O., Lamareille F., Lanzuisi G., Le Borgne J.-F., Le Brun V., Lilly S., Maier C., Manohar S., Masters D., McCracken H., Messias H., Mignoli M., Mobasher B., Nagao T., Pello R., Puccetti S., Perez-Montero E., Renzini A., Sargent M., Sanders D. B., Scodeggio M., Scoville N., Shopbell P., Silvermann J., Taniguchi Y., Tasca L., Tresse L., Trump J. R., Zucca E., 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
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, SPECTRAL ENERGY-DISTRIBUTIONS, 01 natural sciences, Radio spectrum, Photometry (optics), techniques: photometric, S-COSMOS, surveys, 0103 physical sciences, STAR-FORMING GALAXIES, Astrophysics::Solar and Stellar Astrophysics, [INFO]Computer Science [cs], survey, Emission spectrum, DEEP-FIELD, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Photometric redshift, Physics, LEGACY SURVEY, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Sigma, Astronomy and Astrophysics, methods: data analysis, Redshift, Galaxy, galaxies: distances and redshift, X-rays: galaxies, EXTENDED GROTH STRIP, Space and Planetary Science, LUMINOSITY FUNCTION, MULTICOLOR CLASSIFICATION, DIGITAL SKY SURVEY, galaxies: distances and redshifts, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics, WIDE-FIELD SURVEY
Abstract

With this paper, we release accurate photometric redshifts for 1692 counterparts to Chandra sources in the central square degree of the COSMOS field. The availability of a large training set of spectroscopic redshifts that extends to faint magnitudes enabled photometric redshifts comparable to the highest quality results presently available for normal galaxies. We demonstrate that morphologically extended, faint X-ray sources without optical variability are more accurately described by a library of normal galaxies (corrected for emission lines) than by AGN-dominated templates, even if these sources have AGN-like X-ray luminosities. Preselecting the library on the bases of the source properties allowed us to reach an accuracy sigma_(Delta z/(1+z_spec)) \sim0.015 with a fraction of outliers of 5.8% for the entire Chandra-COSMOS sample. In addition, we release revised photometric redshifts for the 1735 optical counterparts of the XMM-detected sources over the entire 2 sq. deg.of COSMOS. For 248 sources, our updated photometric redshift differs from the previous release by Delta z>0.2. These changes are predominantly due to the inclusion of newly available deep H-band photometry H_AB=24 mag. We illustrate once again the importance of a spectroscopic training sample and how an assumption about the nature of a source together with the number and the depth of the available bands influence the accuracy of the photometric redshifts determined for AGN. These considerations should be kept in mind when defining the observational strategies of upcoming large surveys targeting AGN, such as eROSITA at X-ray energies and ASKAP/EMU in the radio band., ApJ, accepted for publication. Data also available at http://www.ipp.mpg.de/~msalv/PHOTOZ_XCOSMOS

Published
2011
Full Text
View/download PDF

20. The Radial and Azimuthal Profiles of Mg II Absorption around 0.5 \lt z \lt 0.9 zCOSMOS Galaxies of Different Colors, Masses, and Environments

Author

Masayuki Tanaka, Niraj Welikala, M. Scodeggio, H. J. McCracken, F. Lamareille, Anton M. Koekemoer, C. Diener, Italo Balestra, O. Le Fèvre, P. Franzetti, Thierry Contini, Jean-Paul Kneib, G. Zamorani, P. Kampczyk, E. Zucca, R. Pello, C. López-Sanjuan, E. Perez Montero, Angela Bongiorno, Simon J. Lilly, Preethi Nair, Rongmon Bordoloi, Lucia Pozzetti, Karina Caputi, John D. Silverman, Bianca Garilli, S. de la Torre, Michele Moresco, Lidia Tasca, Laurence Tresse, J. F. Le Borgne, M. Mignoli, Daniela Vergani, C. Knobel, S. Bardelli, K. Kovac, Yingjie Peng, Claudia Scarlata, V. Le Brun, Luke A. Barnes, Christian Maier, V. Mainieri, M. Bolzonella, V. Presotto, A. Cappi, Alvio Renzini, Pascal Oesch, A. Iovino, Olga Cucciati, Andrea Cimatti, L. de Ravel, Graziano Coppa, C. M. Carollo, 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), Bordoloi R., Lilly S. J., Knobel C., Bolzonella M., Kampczyk P., Carollo C. M., Iovino A., Zucca E., Contini T., Kneib J.-P., Le Fevre O., Mainieri V., Renzini A., Scodeggio M., Zamorani G., Balestra I., Bardelli S., Bongiorno A., Caputi K., Cucciati O., de la Torre S., de Ravel L., Garilli B., Kova&#269, K., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Mignoli M., Pello R., Peng Y., Perez Montero E., Presotto V., Scarlata C., Silverman J., Tanaka M., Tasca L., Tresse L., Vergani D., Barnes L., Cappi A., Cimatti A., Coppa G., Diener C., Franzetti P., Koekemoer A., López-Sanjuan C., McCracken H. J., Moresco M., Nair P., Oesch P., Pozzetti L., and Welikala N.

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Computer Science::Computational Geometry, Rotation, 01 natural sciences, galaxies: groups: general, galaxies: high-redshift, Bipolar outflow, 0103 physical sciences, [INFO]Computer Science [cs], Absorption (electromagnetic radiation), ISM: jets and outflow, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Redshift, Galaxy, quasars: absorption lines, ISM: jets and outflows, Space and Planetary Science, intergalactic medium, Impact parameter, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Equivalent width, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We map the radial and azimuthal distribution of Mg II gas within 200 kpc (physical) of 4000 galaxies at redshifts 0.5 < z < 0.9 using co-added spectra of more than 5000 background galaxies at z > 1. We investigate the variation of Mg II rest frame equivalent width as a function of the radial impact parameter for different subsets of foreground galaxies selected in terms of their rest-frame colors and masses. Blue galaxies have a significantly higher average Mg II equivalent width at close galactocentric radii as compared to the red galaxies. Amongst the blue galaxies, there is a correlation between Mg II equivalent width and galactic stellar mass of the host galaxy. We also find that the distribution of Mg II absorption around group galaxies is more extended than that for non-group galaxies, and that groups as a whole have more extended radial profiles than individual galaxies. Interestingly, these effects can be satisfactorily modeled by a simple superposition of the absorption profiles of individual member galaxies, assuming that these are the same as those of non-group galaxies, suggesting that the group environment may not significantly enhance or diminish the Mg II absorption of individual galaxies. We show that there is a strong azimuthal dependence of the Mg II absorption within 50 kpc of inclined disk-dominated galaxies, indicating the presence of a strongly bipolar outflow aligned along the disk rotation axis. There is no significant dependence of Mg II absorption on the apparent inclination angle of disk-dominated galaxies., 14 pages, Accepted for publication in ApJ; new section on inclination dependence added; Figure 4:- new panel added

Published
2011
Full Text
View/download PDF

21. Black hole accretion and host galaxies of obscured quasars in XMM-COSMOS

Author

Jonathan R. Trump, John D. Silverman, E. Le Floc'h, Günther Hasinger, Daniela Vergani, V. Le Brun, Fabrizio Fiore, S. Bardelli, E. Zucca, Masayuki Tanaka, Chris Impey, Olivier Ilbert, Martin Elvis, Marcella Brusa, Laurence Tresse, Kazushi Iwasawa, F. Lamareille, V. Mainieri, M. Carollo, E. Perez Montero, Karina Caputi, Y. Peng, Jean-Paul Kneib, P. Kampczyk, Lucia Pozzetti, S. de la Torre, Preethi Nair, Yoshiaki Taniguchi, R. Pello, Peter Capak, Roberto Gilli, J. F. Le Borgne, Nico Cappelluti, M. Scodeggio, Anton M. Koekemoer, Andrea Comastri, Christian Maier, Andrea Merloni, P. Franzetti, Angela Bongiorno, C. Knobel, Graziano Coppa, Gianni Zamorani, Olga Cucciati, Elisabeta Lusso, K. Kovac, Herve Aussel, Micol Bolzonella, Lidia Tasca, E. Ricciardelli, L. de Ravel, A. Iovino, Monique Aller, C. Halliday, M. Mignoli, Alvio Renzini, S. J. Lilly, Cristian Vignali, Italo Balestra, Bianca Garilli, Thierry Contini, Mara Salvato, N. Z. Scoville, O. Le Fèvre, Mainieri V., Bongiorno A., Merloni A., Aller M., Carollo M., Iwasawa K., Koekemoer A. M., Mignoli M., Silverman J. D., Bolzonella M., Brusa M., Comastri A., Gilli R., Halliday C., Ilbert O., Lusso E., Salvato M., Vignali C., Zamorani G., Contini T., Kneib J.-P., Le Fevre O., Lilly S., Renzini A., Scodeggio M., Balestra I., Bardelli S., Caputi K., Coppa G., Cucciati O., de la Torre S., de Ravel L., Franzetti P., Garilli B., Iovino A., Kampczyk P., Knobel C., Kovac K., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Nair P., Pello R., Peng Y., Perez Montero E., Pozzetti L., Ricciardelli E., Tanaka M., Tasca L., Tresse L., Vergani D., Zucca E., Aussel H., Capak P., Cappelluti N., Elvis M., Fiore F., Hasinger G., Impey C., Le Floc'h E., Scoville N., Taniguchi Y., Trump J., Astronomy, 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
QSOS, ACTIVE GALACTIC NUCLEI, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, galaxies: active, galaxies: nuclei, galaxies: star formation, quasars: general, X-rays: general, EARLY DATA RELEASE, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, SPECTRAL ENERGY-DISTRIBUTIONS, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy merger, 01 natural sciences, POWERFUL RADIO GALAXIES, 0103 physical sciences, Galaxy formation and evolution, STAR-FORMING GALAXIES, Astrophysics::Solar and Stellar Astrophysics, [INFO]Computer Science [cs], STELLAR MASS DENSITY, DEEP FIELD-SOUTH, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Quasar, HUBBLE-SPACE-TELESCOPE, Galaxy, Accretion (astrophysics), Redshift, Space and Planetary Science, X-RAY-ABSORPTION, DIGITAL SKY SURVEY, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We explore the connection between black hole growth at the center of obscured quasars selected from the XMM-COSMOS survey and the physical properties of their host galaxies. We study a bolometric regime ( 8 x 10^45 erg/s) where several theoretical models invoke major galaxy mergers as the main fueling channel for black hole accretion. We confirm that obscured quasars mainly reside in massive galaxies (Mstar>10^10 Msun) and that the fraction of galaxies hosting such powerful quasars monotonically increases with the stellar mass. We stress the limitation of the use of rest-frame color-magnitude diagrams as a diagnostic tool for studying galaxy evolution and inferring the influence that AGN activity can have on such a process. We instead use the correlation between star-formation rate and stellar mass found for star-forming galaxies to discuss the physical properties of the hosts. We find that at z ~1, ~62% of Type-2 QSOs hosts are actively forming stars and that their rates are comparable to those measured for normal star-forming galaxies. The fraction of star-forming hosts increases with redshift: ~71% at z ~2, and 100% at z ~3. We also find that the the evolution from z ~1 to z ~3 of the specific star-formation rate of the Type-2 QSO hosts is in excellent agreement with that measured for star-forming galaxies. From the morphological analysis, we conclude that most of the objects are bulge-dominated galaxies, and that only a few of them exhibit signs of recent mergers or disks. Finally, bulge-dominated galaxies tend to host Type-2 QSOs with low Eddington ratios (lambda 0.1)., Accepted by A&A. 20 pages, 16 figures, 2 tables. A version with higher resolution figures and SED fits of Appendix A is available at http://www.eso.org/~vmainier/QSO2/qso2.pdf

Published
2011
Full Text
View/download PDF

22. zCOSMOS 10k-bright spectroscopic sample: exploring mass and environment dependence in early-type galaxies

Author

V. Mainieri, Marcella Carollo, E. Zucca, Michele Moresco, J. F. Le Borgne, Andrea Cimatti, L. de Ravel, A. Cappi, Micol Bolzonella, Lidia Tasca, F. Lamareille, S. Bardelli, Simon J. Lilly, P. Oesch, P. Memeo, U. Abbas, A. Iovino, Alvio Renzini, Cristiano Porciani, Y. Peng, M. Mignoli, E. Ricciardelli, O. Le Fèvre, C. Halliday, Jean-Paul Kneib, D. Maccagni, P. Franzetti, C. Knobel, Graziano Coppa, Gianni Zamorani, Masaomi Tanaka, Anton M. Koekemoer, A. Leauthaud, D. Bottini, Daniela Vergani, Laurence Tresse, Olga Cucciati, Lucia Pozzetti, E. Perez Montero, S. de la Torre, Angela Bongiorno, Bianca Garilli, B. Meneux, Christian Maier, Luigi Guzzo, Christian Marinoni, John D. Silverman, P. Kampczyk, Roberto Scaramella, R. Pello, M. Scodeggio, K. Kovac, Thierry Contini, H. J. McCracken, Preethi Nair, S. Di Cesare, Karina Caputi, Nick Scoville, Claudia Scarlata, V. Le Brun, Paolo Cassata, Moresco M., Pozzetti L., Cimatti A., Zamorani G., Mignoli M., di Cesare S., Bolzonella M., Zucca E., Lilly S., Kova&#269, K., Scodeggio M., Cassata P., Tasca L., Vergani D., Halliday C., Carollo M., Contini T., Kneib J.-P., Le Févre O., Mainieri V., Renzini A., Bardelli S., 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., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Pellò R., Peng Y., Perez Montero E., Ricciardelli E., Silverman J. D., Tanaka M., Tresse L., Abbas U., Bottini D., Cappi A., Guzzo L., Koekemoer A. M., Leauthaud A., Maccagni D., Marinoni C., McCracken H. J., Memeo P., Meneux B., Nair P., Oesch P., Porciani C., Scaramella R., Scarlata C., Scoville N., 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
FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Measure (mathematics), surveys, 0103 physical sciences, Range (statistics), Galaxy formation and evolution, Astrophysics::Solar and Stellar Astrophysics, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, galaxies: statistics, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, galaxies: fundamental parameters, Sample (graphics), Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Early type, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Equivalent width
Abstract

We present the analysis of the U-V rest-frame color distribution and some spectral features as a function of mass and environment for two sample of early-type galaxies up to z=1 extracted from the zCOSMOS spectroscopic survey. The first sample ("red galaxies") is defined with a photometric classification, while the second ("ETGs") by combining morphological, photometric, and spectroscopic properties to obtain a more reliable sample. We find that the color distribution of red galaxies is not strongly dependent on environment for all mass bins, with galaxies in overdense regions redder than galaxies in underdense regions with a difference of 0.027\pm0.008 mag. The dependence on mass is far more significant, with average colors of massive galaxies redder by 0.093\pm0.007 mag than low-mass galaxies throughout the entire redshift range. We study the color-mass relation, finding a mean slope 0.12\pm0.005, while the color-environment relation is flatter, with a slope always smaller than 0.04. The spectral analysis that we perform on our ETGs sample is in good agreement with our photometric results: we find for D4000 a dependence on mass between high and low-mass galaxies, and a much weaker dependence on environment (respectively a difference of of 0.11\pm0.02 and of 0.05\pm0.02); for the equivalent width of H{\delta}we measure a difference of 0.28\pm0.08 {\AA}across the same mass range and no significant dependence on environment.By analyzing the lookback time of early-type galaxies, we support the possibility of a downsizing scenario, in which massive galaxies with a stronger D4000 and an almost constant equivalent width of $H\delta$ formed their mass at higher redshift than lower mass ones. We also conclude that the main driver of galaxy evolution is the galaxy mass, the environment playing a subdominant role., Comment: 12 pages, 12 figures, accepted for publication on Astronomy and Astrophysics

Published
2010
Full Text
View/download PDF

23. Ultraluminous X-ray sources out to z ~ 0.3 in the COSMOS field

Author

Angela Bongiorno, O. Le Fèvre, John D. Silverman, N. Z. Scoville, P. Franzetti, Anton M. Koekemoer, Olga Cucciati, E. Zucca, Simonetta Puccetti, C. Knobel, Thierry Contini, S. Bardelli, Bianca Garilli, Giuseppina Fabbiano, G. Zamorani, Antonella Fruscione, L. de Ravel, E. Perez Montero, Jonathan R. Trump, Nico Cappelluti, Andrea Merloni, Mara Salvato, Cristian Vignali, M. Scodeggio, J. P. Kneib, K. Kovac, Alvio Renzini, Lidia Tasca, Y. Peng, S. de la Torre, Peter Capak, Alexis Finoguenov, Graziano Coppa, Francesca Civano, Roberto Gilli, Tom Aldcroft, Fabrizio Fiore, P. Kampczyk, V. Mainieri, F. Lamareille, Monique Aller, Chris Impey, R. Pello, Andrea Comastri, M. Bolzonella, M. Mignoli, Laurence Tresse, Martin Elvis, M. Carollo, Yoshiaki Taniguchi, Simon J. Lilly, Claudia Scarlata, Masayuki Tanaka, Karina Caputi, V. Le Brun, E. Ricciardelli, Christian Maier, Olivier Ilbert, Marcella Brusa, A. Iovino, J. F. Le Borgne, Daniela Vergani, 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), Astronomy, Mainieri V., Vignali C., Merloni A., Civano F., Puccetti S., Brusa M., Gilli R., Bolzonella M., Comastri A., Zamorani G., Aller M., Carollo M., Scarlata C., Elvis M., Aldcroft T.L., Cappelluti N., Fabbiano G., Finoguenov A., Fiore F., Fruscione A., Koekemoer A.M., Contini T., Kneib J.P., Le Fevre O., Lilly S., Renzini A., Scodeggio M., Bardelli S., 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., Kovac K., Lamareille F., Le Borgne J.F., Le Brun V., Maier C., Mignoli M., Pello R., Peng Y., Perez Montero E., Ricciardelli E., Silverman J.D., Tanaka M., Tasca L., Tresse L., Vergani D., Zucca E., Capak P., Ilbert O., Impey C., Salvato M., Scoville S., Taniguchi Y., and Trump L.

Subjects
X-rays: galaxies – X-rays: binaries – X-rays: general – surveys, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Field (physics), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, X-rays: general, 01 natural sciences, X-rays: binaries, surveys, 0103 physical sciences, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, Star formation, X-ray, Astronomy and Astrophysics, Redshift, Galaxy, Early type, X-rays: galaxies, Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Using Chandra observations we have identified a sample of seven off-nuclear X-ray sources, in the redshift range z=0.072-0.283, located within optically bright galaxies in the COSMOS Survey. Using the multi-wavelength coverage available in the COSMOS field, we study the properties of the host galaxies of these ULXs. In detail, we derived their star formation rate from H_alpha measurements and their stellar masses using SED fitting techniques with the aim to compute the probability to have an off-nuclear source based on the host galaxy properties. We divide the host galaxies in different morphological classes using the available ACS/HST imaging. We find that our ULXs candidates are located in regions of the SFR versus M$_star$ plane where one or more off-nuclear detectable sources are expected. From a morphological analysis of the ACS imaging and the use of rest-frame colours, we find that our ULXs are hosted both in late and early type galaxies. Finally, we find that the fraction of galaxies hosting a ULX ranges from ~0.5% to ~0.2% going from L[0.5-2 keV]=3 x 10^39 erg s^-1 to L[0.5-2 keV]= 2 x 10^40 erg s^-1., Comment: 10 pages, 9 figures, accepted for publication in Astronomy & Astrophysics

Published
2010
Full Text
View/download PDF

24. Properties and environment of radio-emitting galaxies in the VLA-zCOSMOS survey

Author

S. Bardelli, E. Schinnerer, V. Smolčic, G. Zamorani, E. Zucca, M. Mignoli, C. Halliday, K. Kovač, P. Ciliegi, K. Caputi, A. M. Koekemoer, A. Bongiorno, M. Bondi, M. Bolzonella, D. Vergani, L. Pozzetti, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fèvre, S. Lilly, V. Mainieri, A. Renzini, M. Scodeggio, G. Coppa, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, C. Knobel, F. Lamareille, J.-F. Le Borgne, V. Le Brun, C. Maier, R. Pellò, Y. Peng, E. Perez-Montero, E. Ricciardelli, J. D. Silverman, M. Tanaka, L. Tasca, L. Tresse, U. Abbas, D. Bottini, A. Cappi, P. Cassata, A. Cimatti, L. Guzzo, A. Leauthaud, D. Maccagni, C. Marinoni, H. J. McCracken, P. Memeo, B. Meneux, P. Oesch, C. Porciani, R. Scaramella, P. Capak, D. Sanders, N. Scoville, Y. Taniguchi, K. Jahnke, 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), S.Bardelli, E.Schinnerer, V.Smolcic, G.Zamorani, E.Zucca, M.Mignoli, C.Halliday, K.Kovac, P.Ciliegi, K.Caputi, A.M.Koekemoer, A.Bongiorno, M.Bondi, M.Bolzonella, D.Vergani, L.Pozzetti, C.M.Carollo, T.Contini, J.-P.Kneib, O.LeFevre, S.Lilly, V.Mainieri, A.Renzini, M.Scodeggio, G.Coppa, O.Cucciati, S.delaTorre, L.deRavel, P.Franzetti, B.Garilli, A.Iovino, P.Kampczyk, C.Knobel, F.Lamareille, J.-F.LeBorgne, V.LeBrun, C.Maier, R.Pello`, Y.Peng, E.Perez-Montero, E.Ricciardelli, J.D.Silverman, M.Tanaka, L.Tasca, L.Tresse, U.Abba, D.Bottini, A.Cappi, P.Cassata, A.Cimatti, L.Guzzo, A.Leauthaud, D.Maccagni, C.Marinoni, H.J.McCracken, P.Memeo, B.Meneux, P.Oesch, C.Porciani, R.Scaramella, P.Capak, D.Sander, N.Scoville, Y.Taniguchi, K.Jahnke, 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 Astronomy

Subjects
radio continuum: planetary systems, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Infrared, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Luminosity, 0103 physical sciences, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, Physics, radio continuum: galaxies, Mass distribution, 010308 nuclear & particles physics, Star formation, Galaxies: fundamental parameters, Galaxies: general, Galaxies: luminosity function, mass function, Radio continuum: galaxies, Radio continuum: planetary systems, Astronomy and Astrophysics, Space and Planetary Science, galaxies: fundamental parameters, galaxies: general, Galaxy, Redshift, Interstellar medium, galaxies: luminosity function, 13. Climate action, mass function, Spectral energy distribution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We investigate the properties and the environment of radio sources with optical counterpart from the combined VLA-COSMOS and zCOSMOS samples. The advantage of this sample is the availability of optical spectroscopic information, high quality redshifts, and accurate density determination. By comparing the star formation rates estimated from the optical spectral energy distribution with those based on the radio luminosity, we divide the radio sources in three families, passive AGN, non-passive AGN and star forming galaxies. These families occupy specific regions of the 8.0-4.5 $\mu$m infrared color--specific star formation plane, from which we extract the corresponding control samples. Only the passive AGN have a significantly different environment distribution from their control sample. The fraction of radio-loud passive AGN increases from ~2% in underdense regions to ~15% for overdensities (1+delta) greater than 10. This trend is also present as a function of richness of the groups hosting the radio sources. Passive AGN in overdensities tend to have higher radio luminosities than those in lower density environments. Since the black hole mass distribution is similar in both environments, we speculate that, for low radio luminosities, the radio emission is controlled (through fuel disponibility or confinement of radio jet by local gas pressure) by the interstellar medium of the host galaxy, while in other cases it is determined by the structure (group or cluster) in which the galaxy resides., Comment: 17 pages, 17 figures, A&A in press

Published
2010
Full Text
View/download PDF

25. K+a galaxies in the zCOSMOS Survey: Physical properties of systems in their post-starburst phase

Author

D. Vergani, G. Zamorani, S. Lilly, F. Lamareille, C. Halliday, M. Scodeggio, C. Vignali, P. Ciliegi, M. Bolzonella, M. Bondi, K. Kovač, C. Knobel, E. Zucca, K. Caputi, L. Pozzetti, S. Bardelli, M. Mignoli, A. Iovino, C. M. Carollo, T. Contini, J.-P. Kneib, O. Le Fèvre, V. Mainieri, A. Renzini, A. Bongiorno, G. Coppa, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, P. Kampczyk, J.-F. Le Borgne, V. Le Brun, C. Maier, R. Pello, Y. Peng, E. Perez Montero, E. Ricciardelli, J. D. Silverman, M. Tanaka, L. Tasca, L. Tresse, U. Abbas, D. Bottini, A. Cappi, P. Cassata, A. Cimatti, L. Guzzo, A. M. Koekemoer, A. Leauthaud, D. Maccagni, C. Marinoni, H. J. McCracken, P. Memeo, B. Meneux, P. Oesch, C. Porciani, R. Scaramella, P. Capak, D. Sanders, N. Scoville, Y. Taniguchi, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), AUTRES, 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, INAF- Milano, Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), INAF - Osservatorio Astronomico di Bologna (OABO), Università di Bologna, Dipartimento di Astronomia, INAF - Osservatorio Astronomico di Brera (OAB), University of Chicago, 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), 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), Dipartimento di Fisica e Astronomia [Bologna], Glycosciences Laboratory, Imperial College School of Medicine, Tokai University, 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), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Materials & Process technology, Boeing Company [Chicago], California Institute of Technology (CALTECH), Astronomy, Vergani D., Zamorani G., Lilly S.J., Lamareille F., Halliday C., Scodeggio M., Vignali C., Ciliegi P., Bolzonella M., Bondi M., Kovac K., Knobel C., Zucca E., Caputi K., Pozzetti L., Bardelli S., Mignoli M., Iovino A., Carollo C.M., Contini T., Kneib J.-P., Le Fevre O., Mainieri V., Renzini A., Bongiorno A., Coppa G., Cucciati O., de la Torre S., de Ravel L., Franzetti P., Garilli B., Kampczyk P., Le Borgne J.-F., Le Brun V., Maier C., Pello R., Peng Y., Perez Montero E., Ricciardelli E., Silverman J.D., Tanaka M., Tasca L., Tresse L., Abbas U., Bottini D., Cappi A., Cassata P., Cimatti A., Guzzo L., Koekemoer A.M., Leauthaud A., Maccagni D., Marinoni C., McCracken H.J., Memeo P., Meneux B., Oesch P., Porciani C., Scaramella R., Capak P., Sanders D., Scoville N., Taniguchi Y., 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), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-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
Cosmology and Nongalactic Astrophysics (astro-ph.CO), galaxies: evolution – galaxies: fundamental parameters – galaxies: luminosity function, mass function – cosmology: observations – galaxies: formation, Stellar mass, Formation, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Spectral line, Luminosity, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Phase (matter), 0103 physical sciences, Galaxy formation and evolution, galaxies: formation, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Luminosity function, Spectral properties, Astronomy and Astrophysics, galaxies: fundamental parameters, Galaxies, Fundamental parameters - Galaxies, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Cosmology, galaxies: luminosity function, Observations - Galaxies, Evolution - Galaxies, Luminosity function, mass function, Space and Planetary Science, mass function, Astrophysics of Galaxies (astro-ph.GA), cosmology: observations, galaxies: evolution, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The identities of the main processes triggering and quenching star-formation in galaxies remain unclear. A key stage in evolution, however, appears to be represented by post-starburst galaxies. To investigate their impact on galaxy evolution, we initiated a multiwavelength study of galaxies with k+a spectral features in the COSMOS field. We examine a mass-selected sample of k+a galaxies at z=0.48-1.2 using the spectroscopic zCOSMOS sample. K+a galaxies occupy the brightest tail of the luminosity distribution. They are as massive as quiescent galaxies and populate the green valley in the colour versus luminosity (or stellar mass) distribution. A small percentage (, 17 pages, 9 figures. Accepted for publication in Astronomy and Astrophysics on 09/09/2009 (no changes wrt v1)

Published
2010
Full Text
View/download PDF

26. On the cosmic evolution of the scaling relations between black holes and their host galaxies: Broad-line active galactic nuclei in the zCosmos survey

Author

G. Hasinger, O. Cucciati, S. de la Torre, F. Lamareille, Mara Salvato, Knud Jahnke, Takamitsu Miyaji, J. F. Le Borgne, B. Garilli, E. Ricciardelli, C. M. Carollo, C. Knobel, Jonathan R. Trump, T. Contini, Anton M. Koekemoer, Heng Hao, Y. Peng, E. Perez Montero, Andrea Merloni, Elisabeta Lusso, P. Kampczyk, M. Bolzonella, Karina Caputi, Peter Capak, S. J. Lilly, A. Iovino, Yoshi Taniguchi, G. Zamorani, R. Pello, Katarina Kovac, D. B. Sanders, M. Elvis, M. Mignoli, Marcella Brusa, Angela Bongiorno, L. A. M. Tasca, John D. Silverman, Christian Maier, S. Bardelli, J. P. Kneib, Marco Scodeggio, Roberto Gilli, L. Tresse, Alvio Renzini, Francesca Civano, V. Le Brun, Masaomi Tanaka, D. Vergani, Fabrizio Fiore, Chris Impey, Andrea Comastri, E. Zucca, L. de Ravel, Cristian Vignali, Graziano Coppa, Vincenzo Mainieri, P. Franzetti, K. Iwasawa, O. Le Fevre, and Astronomy

Subjects
Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, BH-SIGMA RELATION, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, SPECTRAL ENERGY-DISTRIBUTIONS, BULGE MASS RELATION, HIGH-REDSHIFT QUASARS, Binary black hole, RADIUS-LUMINOSITY RELATIONSHIP, ELLIPTIC GALAXIES, STAR-FORMING GALAXIES, QUASI-STELLAR OBJECTS, Astrophysics::Galaxy Astrophysics, SEYFERT-1 GALAXIES, Physics, Supermassive black hole, Astronomy, Astronomy and Astrophysics, Quasar, Redshift survey, Cosmology: observations, Galaxies: active, Galaxies: evolution, Quasars: emission lines Online-only material: color figures, Black hole, quasars: emission lines, Space and Planetary Science, Intermediate-mass black hole, cosmology: observations, X-RAY, Stellar black hole, galaxies: evolution
Abstract

We report on the measurement of the physical properties (rest-frame K-band luminosity and total stellar mass) of the hosts of 89 broad-line (type-1) active galactic nuclei (AGNs) detected in the ZCOSMOS survey in the redshift range 1

Published
2010

27. Ongoing and Co-Evolving Star Formation in zCOSMOS Galaxies Hosting Active Galactic Nuclei

Author

J. D. Silverman, F. Lamareille, C. Maier, S. J. Lilly, V. Mainieri, M. Brusa, N. Cappelluti, G. Hasinger, G. Zamorani, M. Scodeggio, M. Bolzonella, T. Contini, C. M. Carollo, K. Jahnke, J.-P. Kneib, O. Le Fèvre, A. Merloni, S. Bardelli, A. Bongiorno, H. Brunner, K. Caputi, F. Civano, A. Comastri, G. Coppa, O. Cucciati, S. de la Torre, L. de Ravel, M. Elvis, A. Finoguenov, F. Fiore, P. Franzetti, B. Garilli, R. Gilli, A. Iovino, P. Kampczyk, C. Knobel, K. Kovač, J.-F. Le Borgne, V. Le Brun, M. Mignoli, R. Pello, Y. Peng, E. Perez Montero, E. Ricciardelli, M. Tanaka, L. Tasca, L. Tresse, D. Vergani, C. Vignali, E. Zucca, D. Bottini, A. Cappi, P. Cassata, M. Fumana, R. Griffiths, J. Kartaltepe, A. Koekemoer, C. Marinoni, H. J. McCracken, P. Memeo, B. Meneux, P. Oesch, C. Porciani, M. Salvato, AUTRES, Human Genetics Center, The University of Texas Health Science Center at Houston (UTHealth), Department of Psychiatry [Pittsburgh], University of Pittsburgh School of Medicine, Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), 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), 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), INAF - Osservatorio Astronomico di Brera (OAB), INAF - Osservatorio Astronomico di Capodimonte (OAC), INAF- Milano, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (LATT), University of Chicago, Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, 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), Services communs OMP (UMS 831), Max-Planck-Institut für Astrophysik (MPA), Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), 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), Glycosciences Laboratory, Imperial College School of Medicine, Information Science Laboratory, Tokai University, Japan Atomic Energy Agency, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), Department of Statistics [Oxford], University of Oxford, 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 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), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Silverman J. D., Lamareille F., Maier C., Lilly S. J., Mainieri V., Brusa M., Cappelluti N., Hasinger G., Zamorani G., Scodeggio M., Bolzonella M., Contini T., Carollo C. M., Jahnke K., Kneib J.-P., LeFèvre O., Merloni A., Bardelli S., Bongiorno A., Brunner H., Caputi K., Civano F., Comastri A., Coppa G., Cucciati O., de la Torre S., de Ravel L., Elvis M., Finoguenov A., Fiore F., Franzetti P., Garilli B., Gilli R., Iovino A., Kampczyk P., Knobel C., Kovac K., LeBorgne J.-F., LeBrun V., Mignoli M., Pello R., Peng Y., Montero E. Perez, Ricciardelli E., Tanaka M., Tasca L., Tresse L., Vergani D., Vignali C., Zucca E., Bottini D., Cappi A., Cassata P., Fumana M., Griffiths R., Kartaltepe J., Koekemoer A., Marinoni C., McCracken H. J., Memeo P., Meneux B., Oesch P., Porciani C., Salvato M., 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, Università di Bologna, Dipartimento di Astronomia, 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), 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 degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Dipartimento di Astronomia, Universita degli Studi di Bologna, University of Oxford [Oxford], Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
Active galactic nucleus, Stellar mass, Astrophysics::High Energy Astrophysical Phenomena, Population, 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, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Supermassive black hole, education.field_of_study, Quasars: emission lines, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Astrophysics (astro-ph), Galaxies: evolution, Astronomy and Astrophysics, Galaxies: active, galaxies: active – galaxies: evolution – quasars: emission lines – quasars: general – X-rays: galaxies, Accretion (astrophysics), Galaxy, Quasars: general, X-rays: galaxies, Stars, 13. Climate action, Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics
Abstract

We present a study of the host galaxies of AGN selected from the zCOSMOS survey to establish if accretion onto supermassive black holes and star formation are explicitly linked up to z~1. We identify 152 galaxies that harbor AGN, based on XMM observations of 7543 galaxies (i, To appear in The Astrophysical Journal; 17 pages; 13 figures (5 color)

Published
2009

28. The Environments of Active Galactic Nuclei within the zCOSMOS Density Field

Author

O. Cucciati, Pascal Oesch, S. de la Torre, R. Pello, M. Mignoli, P. Kampczyk, C. M. Carollo, F. Lamareille, D. Bottini, Andrea Comastri, J. F. Le Borgne, Graziano Coppa, E. Zucca, E. Ricciardelli, Marco Scodeggio, S. Bardelli, Christian Maier, T. Contini, Knud Jahnke, Mara Salvato, Vincenzo Mainieri, E. Perez Montero, H. J. McCracken, Roberto Gilli, M. Elvis, P. Memeo, Jean-Paul Kneib, Christian Marinoni, Richard E. Griffiths, A. Finoguenov, L. Tresse, P. Franzetti, A. Cappi, Paolo Cassata, D. Vergani, C. Knobel, G. Hasinger, Angela Bongiorno, John D. Silverman, G. Zamorani, L. de Ravel, O. Le Fevre, Francesca Civano, B. Garilli, Y. Peng, Katarina Kovac, V. Le Brun, Nico Cappelluti, Masaomi Tanaka, M. Bolzonella, Cristian Vignali, Karina Caputi, L. A. M. Tasca, Fabrizio Fiore, Hermann Brunner, S. J. Lilly, M. Fumana, Cristiano Porciani, A. Iovino, B. Meneux, Marcella Brusa, 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 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), European Southern Observatory (ESO), Max-Planck-Institut für Extraterrestrische Physik (MPE), 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), Universitats-Sternwarte [München], Ludwig-Maximilians-Universität München (LMU), INAF - Osservatorio Astronomico di Brera (OAB), INAF - Osservatorio Astronomico di Roma (OAR), INAF-IASF Milano, Carnegie Mellon University [Pittsburgh] (CMU), Space Telescope Science Institute (STSci), Universita degli Studi di Padova, Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), 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), Silverman J. D., Kovac K., Knobel C., Lilly S., Bolzonella M., Lamareille F., Mainieri V., Brusa M., Cappelluti N., Peng Y., Hasinger G., Zamorani G., Scodeggio M., Contini T., Carollo C. M., Jahnke K., Kneib J.-P., LeFevre O., Bardelli S., Bongiorno A., Brunner H., Caputi K., Civano F., Comastri A., Coppa G., Cucciati O., de la Torre S., de Ravel L., Elvis M., Finoguenov A., Fiore F., Franzetti P., Garilli B., Gilli R., Griffiths R., Iovino A., Kampczyk P., Koekemoer A., LeBorgne J.-F., LeBrun V., Maier C., Mignoli M., Pello R., Perez Montero E., Ricciardelli E., Tanaka M., Tasca L., Tresse L., Vergani D., Vignali C., Zucca E., Bottini D., Cappi A., Cassata P., Marinoni C., McCracken H. J., Memeo P., Meneux B., Oesch P., Porciani C., Salvato M., AUTRES, Max Planck Institute for Meteorology (MPI-M), Max-Planck-Gesellschaft, Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (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, University of Chicago, Max-Planck-Institut für Astronomie (MPIA), INAF- Milano, INAF - Osservatorio Astronomico di Capodimonte (OAC), UPRESA, Centre National de la Recherche Scientifique (CNRS), Université de la Méditerranée - Aix-Marseille 2, Department of Statistics [Oxford], University of Oxford [Oxford], Services communs OMP (UMS 831), Glycosciences Laboratory, Imperial College School of Medicine, Information Science Laboratory, Tokai University, Japan Atomic Energy Agency, 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), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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), 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 Università degli Studi di Padova = University of Padua (Unipd)

Subjects
Active galactic nucleus, Stellar mass, Galaxies: active, Quasars: general, X-rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::High Energy Astrophysical Phenomena, Population, galaxies: active, 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], quasars: general, 0103 physical sciences, Density field, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, 010308 nuclear & particles physics, Star formation, Astrophysics (astro-ph), Significant difference, Redshift survey, Galaxy, Astrophysics::Earth and Planetary Astrophysics, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], galaxies: active – quasars: general – X-rays: galaxies
Abstract

The impact of environment on AGN activity up to z~1 is assessed by utilizing a mass-selected sample of galaxies from the 10k catalog of the zCOSMOS spectroscopic redshift survey. We identify 147 AGN by their X-ray emission as detected by XMM-Newton from a parent sample of 7234 galaxies. We measure the fraction of galaxies with stellar mass M_*>2.5x10^10 Msun that host an AGN as a function of local overdensity using the 5th, 10th and 20th nearest neighbors that cover a range of physical scales (~1-4 Mpc). Overall, we find that AGNs prefer to reside in environments equivalent to massive galaxies with substantial levels of star formation. Specifically, AGNs with host masses between 0.25-1x10^11 Msun span the full range of environments (i.e., field-to-group) exhibited by galaxies of the same mass and rest-frame color or specific star formation rate. Host galaxies having M_*>10^11 Msun clearly illustrate the association with star formation since they are predominantly bluer than the underlying galaxy population and exhibit a preference for lower density regions analogous to SDSS studies of narrow-line AGN. To probe the environment on smaller physical scales, we determine the fraction of galaxies (M_*>2.5x10^10 Msun) hosting AGNs inside optically-selected groups, and find no significant difference with field galaxies. We interpret our results as evidence that AGN activity requires a sufficient fuel supply; the probability of a massive galaxy to have retained some sufficient amount of gas, as evidence by its ongoing star formation, is higher in underdense regions where disruptive processes (i.e., galaxy harrassment, tidal stripping) are lessened., 13 pages; 11 figures; To appear in The Astrophysical Journal

Published
2009
Full Text
View/download PDF

29. The zCOSMOS redshift survey: The three-dimensional classification cube and bimodality in galaxy physical properties

Author

Peter Capak, L. de Ravel, Ummi Abbas, Bianca Garilli, P. Kampczyk, Alvio Renzini, Luigi Guzzo, S. de la Torre, M. Fumana, Roberto Scaramella, Pascal Oesch, R. Pello, E. Zucca, M. Mignoli, H. J. McCracken, S. Bardelli, Laurence Tresse, G. Zamorani, D. Bottini, Lidia Tasca, Christian Maier, Thierry Contini, F. Lamareille, Graziano Coppa, P. Memeo, Christian Marinoni, Claudia Scarlata, O. Le Fèvre, V. Le Brun, Paolo Cassata, K. Kovac, Angela Bongiorno, A. Cappi, Alessandro Cimatti, Micol Bolzonella, Simon J. Lilly, Alexie Leauthaud, C. Halliday, Daniela Vergani, Karina Caputi, John D. Silverman, C. M. Carollo, Cristiano Porciani, J. F. Le Borgne, Jean-Paul Kneib, E. Perez Montero, M. Scodeggio, D. Maccagni, Y. Peng, Nick Scoville, V. Mainieri, B. Meneux, P. Franzetti, Masayuki Tanaka, Lucia Pozzetti, C. Knobel, E. Ricciardelli, A. Iovino, Olga Cucciati, INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano (IASF-MI), Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), INAF - Osservatorio Astrofisico di Arcetri (OAA), 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), 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), European Southern Observatory (ESO), Universita degli Studi di Padova, Max-Planck-Institut für Extraterrestrische Physik (MPE), INAF - Osservatorio Astronomico di Brera (OAB), Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (LATT), Services communs OMP (UMS 831), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, California Institute of Technology (CALTECH), 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), INAF - Osservatorio Astronomico di Roma (OAR), 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), Università degli Studi di Padova = University of Padua (Unipd), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), 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), Mignoli M., Zamorani G., Scodeggio M., Cimatti A., Halliday C., Lilly S. J., Pozzetti L., Vergani D., Carollo C. M., Contini T., Le Févre O., Mainieri V., Renzini A., 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., Kneib J.-P., Knobel C., Kova&#269, K., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Pellò R., Peng Y., Perez Montero E., Ricciardelli E., Scarlata C., Silverman J. D., Tanaka M., Tasca L., Tresse L., Zucca E., Abbas U., Bottini D., Capak P., Cappi A., Cassata P., Fumana M., Guzzo L., Leauthaud A., Maccagni D., Marinoni C., McCracken H. J., Memeo P., Meneux B., Oesch P., Porciani C., Scaramella R., Scoville N., 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
Galaxies: general, Galaxies: fundamental parameters, 010504 meteorology & atmospheric sciences, Stellar population, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Stellar classification, 01 natural sciences, Spectral line, Photometry (optics), [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 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, Galaxies: evolution, Astronomy and Astrophysics, Space and Planetary Science, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Redshift survey, Galaxy, Bimodality, Astrophysics::Earth and Planetary Astrophysics, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]
Abstract

Aims. We investigate the relationships between three main optical galaxy observables (spectral properties, colours, and morphology), exploiting the data set provided by the COSMOS/zCOSMOS survey. The purpose of this paper is to define a simple galaxy classification cube, using a carefully selected sample of around 1000 galaxies. Methods. Using medium resolution spectra of the first 1k zCOSMOS-bright sample, optical photometry from the Subaru/COSMOS observations, and morphological measurements derived from ACS imaging, we analyze the properties of the galaxy population out to z~1. Applying three straightforward classification schemes (spectral, photometric, and morphological), we identify two main galaxy types, which appear to be linked to the bimodality of galaxy population. The three parametric classifications constitute the axes of a "classification cube". Results. A very good agreement exists between the classification from spectral data (quiescent/star-forming galaxies) and that based on colours (red/blue galaxies). The third parameter (morphology) is less well correlated with the first two: in fact a good correlation between the spectral classification and that based on morphological analysis (early-/late-type galaxies) is achieved only after partially complementing the morphological classification with additional colour information. Finally, analyzing the 3D-distribution of all galaxies in the sample, we find that about 85% of the galaxies show a fully concordant classification, being either quiescent, red, bulge-dominated galaxies (~20%) or star-forming, blue, disk-dominated galaxies (~65%). These results imply that the galaxy bimodality is a consistent behaviour both in morphology, colour and dominant stellar population, at least out to z~1., Comment: 11 pages, Accepted for publication in A&A

Published
2009
Full Text
View/download PDF

30. The zCOSMOS Survey. The dependence of clustering on luminosity and stellar mass at z=0.2-1

Author

C. Knobel, Graziano Coppa, Anton M. Koekemoer, M. Fumana, E. Zucca, Alvio Renzini, Lidia Tasca, A. Iovino, J. F. Le Borgne, Cristiano Porciani, M. Scodeggio, B. Meneux, P. Memeo, John D. Silverman, Luigi Guzzo, U. Abbas, Y. Peng, C. M. Carollo, Daniela Vergani, Pascal Oesch, Roberto Scaramella, V. Le Brun, V. Mainieri, Simon J. Lilly, E. Ricciardelli, Christian Maier, Thierry Contini, Christian Marinoni, Roser Pello, Olga Cucciati, L. de Ravel, Laurence Tresse, G. Zamorani, K. Kovac, Karina Caputi, P. Kampczyk, H. J. McCracken, J. P. Kneib, A. Cappi, Micol Bolzonella, Alexie Leauthaud, S. Bardelli, Bianca Garilli, Angela Bongiorno, E. Perez Montero, Alessandro Cimatti, Masayuki Tanaka, S. de la Torre, P. Franzetti, O. Le Fèvre, D. Maccagni, F. Lamareille, Paolo Cassata, Lucia Pozzetti, D. Bottini, INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Max-Planck-Institut für Extraterrestrische Physik (MPE), Universitats-Sternwarte [München], Ludwig-Maximilians-Universität München (LMU), INAF - Osservatorio Astronomico di Brera (OAB), 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), AUTRES, INAF- Milano, University of Chicago, 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 l'Observatoire Midi-Pyrénées (LATT), 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), Human Genetics Center, The University of Texas Health Science Center at Houston (UTHealth), School of Biotechnology and Biomolecular Sciences, University of New South Wales [Sydney] (UNSW), 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), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), Meneux B., Guzzo L., de La Torre S., Porciani C., Zamorani G., Abbas U., Bolzonella M., Garilli B., Iovino A., Pozzetti L., Zucca E., Lilly S. J., Le Fèvre O., Kneib J.-P., Carollo C. M., Contini T., Mainieri V., Renzini A., Scodeggio M., Bardelli S., Bongiorno A., Caputi K., Coppa G., Cucciati O., de Ravel L., Franzetti P., Kampczyk P., Knobel C., Kova&#269, K., Lamareille F., Le Borgne J.-F., Le Brun V., Maier C., Pellò R., Peng Y., Perez Montero E., Ricciardelli E., Silverman J. D., Tanaka M., Tasca L., Tresse L., Vergani D., Bottini D., Cappi A., Cimatti A., Cassata P., Fumana M., Koekemoer A. M., Leauthaud A., Maccagni D., Marinoni C., McCracken H. J., Memeo P., Oesch P., Scaramella R., Astronomy, 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), 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
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Large-scale structure of Universe, media_common.quotation_subject, SPACE CORRELATION-FUNCTIONS, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Surveys, 01 natural sciences, Luminosity, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], GALAXY REDSHIFT SURVEY, 1ST EPOCH DATA, 0103 physical sciences, LARGE-SCALE STRUCTURE, Cluster analysis, 010303 astronomy & astrophysics, PHOTOMETRIC REDSHIFTS, Astrophysics::Galaxy Astrophysics, media_common, Physics, Galaxy: evolution, 010308 nuclear & particles physics, Cosmology: observations, Astronomy and Astrophysics, VLT DEEP SURVEY, Covariance, ENVIRONMENTAL DEPENDENCE, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Universe, HALO OCCUPATION DISTRIBUTION, Amplitude, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), DIGITAL SKY SURVEY, REAL-SPACE, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We study the dependence of galaxy clustering on luminosity and stellar mass at redshifts z ~ [0.2-1] using the first zCOSMOS 10K sample. We measure the redshift-space correlation functions xi(rp,pi) and its projection wp(rp) for sub-samples covering different luminosity, mass and redshift ranges. We quantify in detail the observational selection biases and we check our covariance and error estimate techniques using ensembles of semi-analytic mock catalogues. We finally compare our measurements to the cosmological model predictions from the mock surveys. At odds with other measurements, we find a weak dependence of galaxy clustering on luminosity in all redshift bins explored. A mild dependence on stellar mass is instead observed. At z~0.7, wp(rp) shows strong excess power on large scales. We interpret this as produced by large-scale structure dominating the survey volume and extending preferentially in direction perpendicular to the line-of-sight. We do not see any significant evolution with redshift of the amplitude of clustering for bright and/or massive galaxies. The clustering measured in the zCOSMOS data at 0.5=10 is only marginally consistent with predictions from the mock surveys. On scales larger than ~2 h^-1 Mpc, the observed clustering amplitude is compatible only with ~1% of the mocks. Thus, if the power spectrum of matter is LCDM with standard normalization and the bias has no unnatural scale-dependence, this result indicates that COSMOS has picked up a particularly rare, ~2-3 sigma positive fluctuation in a volume of ~10^6 h^-1 Mpc^3. These findings underline the need for larger surveys of the z~1 Universe to appropriately characterize the level of structure at this epoch., Comment: 18 pages, 21 figures, accepted for publication in Astronomy and Astrophysics

Published
2009
Full Text
View/download PDF

31. COSMOS Photometric Redshifts with 30-bands for 2-deg2

Author

Peter Capak, A. Leauthaud, V. Le Brun, Herve Aussel, Daniela Vergani, David Schiminovich, H. J. McCracken, M. Zamojski, Mara Salvato, F. Lamareille, O. Le Fèvre, G. Zamorani, Masayuki Tanaka, Stéphane Arnouts, Lidia Tasca, David B. Sanders, Yasuhiro Shioya, S. de la Torre, E. Le Floc'h, P. Franzetti, P. Kampczyk, Yoshiaki Taniguchi, C. Knobel, Marcella Brusa, Olga Cucciati, M. Bolzonella, Bianca Garilli, S. Bardelli, Simon J. Lilly, Olivier Ilbert, Guenther Hasinger, Karina Caputi, Alvio Renzini, A. Iovino, Bahram Mobasher, C. M. Carollo, David R. Thompson, A. Bongiorno, N. Z. Scoville, Christian Maier, T. Murayama, S. S. Sasaki, Jean-Paul Kneib, Jeyhan S. Kartaltepe, E. Perez-Montero, Graziano Coppa, R. Pello, E. Zucca, M. Mignoli, Vincenzo Mainieri, Marco Scodeggio, Yannick Mellier, L. de Ravel, Laurence Tresse, E. Ricciardelli, Yingjie Peng, K. Kovac, Dagny L. Looper, J. F. Le Borgne, T. Contini, John D. Silverman, R. Cook, Jason Surace, Institut d'Astrophysique et de Géophysique [Liège], Université de Liège, INAF - Osservatorio Astronomico di Bologna (OAB), 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), California Institute of Technology (CALTECH), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, AUTRES, 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), 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), Space Telescope Science Institute (STSci), 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), Laboratoire de Physique Statistique de l'ENS (LPS), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), School of Biological Sciences, University of Liverpool, National Institute of Water and Atmospheric Research [Christchurch] (NIWA), National Institute of Water and Atmospheric Research [Wellington] (NIWA), INAF - Osservatorio Astronomico di Capodimonte (OAC), INAF - Osservatorio Astronomico di Brera (OAB), INAF - Osservatorio Astronomico di Bologna (OABO), 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), Services communs OMP (UMS 831), Departement de Radioastronomie Millimétrique (DEMIRM), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-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 de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), 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), Information Science Laboratory, Tokai University, Japan Atomic Energy Agency, INAF - Osservatorio Astrofisico di Arcetri (OAA), 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 Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-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), Beaussier, Catherine, Ilbert O., Capak P., Salvato M., Aussel H., McCracken H. J., Sanders D. B., Scoville N., Kartaltepe J., Arnouts S., Le Floc'h E., Mobasher B., Taniguchi Y., Lamareille F., Leauthaud A., Sasaki S., Thompson D., Zamojski M., Zamorani G., Bardelli S., Bolzonella M., Bongiorno A., Brusa M., Caputi K. I., Carollo C. M., Contini T., Cook R., Coppa G., Cucciati O., de la Torre S., de Ravel L., Franzetti P., Garilli B., Hasinger G., Iovino A., Kampczyk P., Kneib J.-P., Knobel C., Kovac K., Le Borgne J. F., Le Brun V., Fèvre O. Le, Lilly S., Looper D., Maier C., Mainieri V., Mellier Y., Mignoli M., Murayama T., Pellò R., Peng Y., Pérez-Montero E., Renzini A., Ricciardelli E., Schiminovich D., Scodeggio M., Shioya Y., Silverman J., Surace J., Tanaka M., Tasca L., Tresse L., Vergani D., and Zucca E.

Subjects
Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), FOS: Physical sciences, Sigma, Spectral density, Astronomy and Astrophysics, Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 7. Clean energy, 01 natural sciences, Redshift, Galaxy, GALAXIES: SURVEYS, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], galaxies: luminosity function, Space and Planetary Science, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Scale structure, Emission spectrum, galaxies: evolution, 010303 astronomy & astrophysics
Abstract

We present accurate photometric redshifts in the 2-deg2 COSMOS field. The redshifts are computed with 30 broad, intermediate, and narrow bands covering the UV (GALEX), Visible-NIR (Subaru, CFHT, UKIRT and NOAO) and mid-IR (Spitzer/IRAC). A chi2 template-fitting method (Le Phare) was used and calibrated with large spectroscopic samples from VLT-VIMOS and Keck-DEIMOS. We develop and implement a new method which accounts for the contributions from emission lines (OII, Hbeta, Halpha and Ly) to the spectral energy distributions (SEDs). The treatment of emission lines improves the photo-z accuracy by a factor of 2.5. Comparison of the derived photo-z with 4148 spectroscopic redshifts (i.e. Delta z = zs - zp) indicates a dispersion of sigma_{Delta z/(1+zs)}=0.007 at i, Comment: 21 pages, 14 figures, and 3 tables ; accepted for publication in ApJ

Published
2008

32. The VIMOS VLT Deep Survey. Testing the gravitational instability paradigm at z ~ 1

Author

C. Marinoni, L. Guzzo, A. Cappi, O. Le Fèvre, A. Mazure, B. Meneux, A. Pollo, A. Iovino, H. J. McCracken, R. Scaramella, S. de la Torre, J. M. Virey, D. Bottini, B. Garilli, V. Le Brun, D. Maccagni, J. P. Picat, M. Scodeggio, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. Arnouts, S. Bardelli, M. Bolzonella, S. Charlot, P. Ciliegi, T. Contini, S. Foucaud, P. Franzetti, I. Gavignaud, O. Ilbert, F. Lamareille, B. Marano, G. Mathez, R. Merighi, S. Paltani, R. Pellò, L. Pozzetti, M. Radovich, D. Vergani, G. Zamorani, E. Zucca, U. Abbas, M. Bondi, A. Bongiorno, J. Brinchmann, A. Buzzi, O. Cucciati, L. de Ravel, L. Gregorini, Y. Mellier, P. Merluzzi, E. Perez-Montero, P. Taxil, S. Temporin, C. J. Walcher, 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), INAF- Milano, Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), 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 - Osservatorio Astronomico di Brera (OAB), 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 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), INAF - Osservatorio Astronomico di Bologna (OABO), European Southern Observatory (ESO), INAF - Osservatorio Astronomico di Capodimonte (OAC), Istituto di Radioastronomia [Bologna] (IRA), Centro de Astrofísica da Universidade do Porto (CAUP), Universidade do Porto, Bernardo, Elizabeth, AUTRES, 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), 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), Universidade do Porto = University of Porto, Marinoni C., Guzzo L., Cappi A., Le Fèvre O., Mazure A., Meneux B., Pollo A., Iovino A., McCracken H. J., Scaramella R., de La Torre S., Virey J. M., Bottini D., Garilli B., Le Brun V., Maccagni D., Picat J. P., Scodeggio M., Tresse L., Vettolani G., Zanichelli A., Adami C., Arnouts S., Bardelli S., Bolzonella M., Charlot S., Ciliegi P., Contini T., Foucaud S., Franzetti P., Gavignaud I., Ilbert O., Lamareille F., Marano B., Mathez G., Merighi R., Paltani S., Pellò R., Pozzetti L., Radovich M., Vergani D., Zamorani G., Zucca E., Abbas U., Bondi M., Bongiorno A., Brinchmann J., Buzzi A., Cucciati O., de Ravel L., Gregorini L., Mellier Y., Merluzzi P., Perez-Montero E., Taxil P., Temporin S., and Walcher C. J.

Subjects
statistics [galaxies], Distribution (number theory), Field (physics), FOS: Physical sciences, Probability density function, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, Measure (mathematics), GALASSIE, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], GRAVITAZIONE, galaxies: high-redshift, cosmology: theory, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, galaxies: statistics, Physics, large-scale structure of Universe [cosmology], Galaxy: evolution, theory [cosmology], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), Astronomy and Astrophysics, COSMOLOGIA, COSMOLOGIA OSSERVATIVA, cosmology: large-scale structure of Universe, Redshift, Galaxy, SURVEY, Space and Planetary Science, Skewness, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], evolution [galaxy], Perturbation theory (quantum mechanics), [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], high-redshift [galaxies]
Abstract

We have reconstructed the three-dimensional density fluctuation maps to z ~ 1.5 using the distribution of galaxies observed in the VVDS-Deep survey. We use this overdensity field to measure the evolution of the probability distribution function and its lower-order moments over the redshift interval 0.7, Comment: 14 pages, 5 figures, A&A in Press

Published
2008
Full Text
View/download PDF

33. The VIMOS VLT Deep Survey. Tracing the galaxy stellar mass assembly history over the last 8 Gyr

Author

D. Vergani, M. Scodeggio, L. Pozzetti, A. Iovino, P. Franzetti, B. Garilli, G. Zamorani, D. Maccagni, F. Lamareille, O. Le Fèvre, S. Charlot, T. Contini, L. Guzzo, D. Bottini, V. Le Brun, J. P. Picat, R. Scaramella, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. Arnouts, S. Bardelli, M. Bolzonella, A. Cappi, P. Ciliegi, S. Foucaud, I. Gavignaud, O. Ilbert, H. J. McCracken, B. Marano, C. Marinoni, A. Mazure, B. Meneux, R. Merighi, S. Paltani, R. Pellò, A. Pollo, M. Radovich, E. Zucca, M. Bondi, A. Bongiorno, J. Brinchmann, O. Cucciati, S. de la Torre, L. Gregorini, E. Perez-Montero, Y. Mellier, P. Merluzzi, S. Temporin, INAF- Milano, Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astronomico di Bologna (OABO), INAF - Osservatorio Astronomico di Brera (OAB), 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), Max-Planck-Institut für Astrophysik (MPA), Max-Planck-Gesellschaft, 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), 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), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), 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 de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Capodimonte (OAC), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Centro de Astrofísica da Universidade do Porto (CAUP), Universidade do Porto = University of Porto, Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-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 de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), AUTRES, 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, 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), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Services communs OMP (UMS 831), 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), European Southern Observatory (ESO), École normale supérieure - Paris (ENS Paris), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, Università di Bologna, Dipartimento di Astronomia, Universidade do Porto, Beaussier, Catherine, Vergani D., Scodeggio M., Pozzetti L., Iovino A., Franzetti P., Garilli B., Zamorani G., Maccagni D., Lamareille F., Le Fèvre O., Charlot S., Contini T., Guzzo L., Bottini D., Le Brun V., Picat J. P., Scaramella R., Tresse L., Vettolani G., Zanichelli A., Adami C., Arnouts S., Bardelli S., Bolzonella M., Cappi A., Ciliegi P., Foucaud S., Gavignaud I., Ilbert O., McCracken H. J., Marano B., Marinoni C., Mazure A., Meneux B., Merighi R., Paltani S., Pellò R., Pollo A., Radovich M., Zucca E., Bondi M., Bongiorno A., Brinchmann J., Cucciati O., de La Torre S., Gregorini L., Perez-Montero E., Mellier Y., Merluzzi P., and Temporin S.

Subjects
Stellar mass, formation [galaxies], Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, galaxies: fundamental, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, GALASSIE, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, 0103 physical sciences, Galaxy formation and evolution, fundamental parameters [galaxies], Astrophysics::Solar and Stellar Astrophysics, galaxies: formation, education, 010303 astronomy & astrophysics, evolution [galaxies], Astrophysics::Galaxy Astrophysics, Physics, parameters, SPETTROGRAFIA, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], EVOLUZIONE, 010308 nuclear & particles physics, Star formation, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Balmer series, Astronomy and Astrophysics, COSMOLOGIA, luminosity function, mass function [galaxies], Galaxy, Redshift, observations [cosmology], Stars, galaxies: luminosity function, Space and Planetary Science, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], mass function, cosmology: observations, symbols, Astrophysics::Earth and Planetary Astrophysics, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], galaxies: evolution
Abstract

We selected a mass-limited sample of 4048 objects from the VIMOS VLT Deep Survey in the redshift interval 0.5, Comment: Accepted for pubblication in A&A, 14 pages, 5 figures

Published
2008
Full Text
View/download PDF

34. X-ray groups of galaxies at 0.5 < z < 1 in zCOSMOS: Increased AGN activities in high redshift groups

Author

Masayuki Tanaka, Marco Scodeggio, P. Nair, John D. Silverman, Pascal Oesch, Angela Bongiorno, Alexis Finoguenov, E. Perez Montero, Graziano Coppa, A. Iovino, Niraj Welikala, E. Zucca, O. Cucciati, Vincenzo Mainieri, S. de la Torre, S. J. Lilly, L. de Ravel, O. Le Fevre, Jean-Paul Kneib, C. M. Carollo, Anton M. Koekemoer, J. F. Le Borgne, Michele Moresco, P. Kampczyk, M. Bolzonella, Lucia Pozzetti, Y. Peng, T. Contini, Katarina Kovac, Alvio Renzini, R. Pello, P. Franzetti, V. Le Brun, Andrea Cimatti, M. Mignoli, Karina Caputi, Rongmon Bordoloi, S. Bardelli, A. Cappi, L. A. M. Tasca, B. Garilli, L. Tresse, C. Knobel, V. Presotto, C. Lopez-Sanjuan, F. Lamareille, Luke A. Barnes, Christian Maier, G. Zamorani, H. J. McCracken, D. Vergani, Astronomy, 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), Tanaka Masayuki, Finoguenov Alexi, Lilly Simon J., Bolzonella Micol, Carollo C. Marcella, Contini Thierry, Iovino Angela, Kneib Jean-Paul, Lamareille Fabrice, Le Fevre Olivier, Mainieri Vincenzo, Presotto Valentina, Renzini Alvio, Scodeggio Marco, Silverman John D., Zamorani Gianni, Bardelli Sandro, Bongiorno Angela, Caputi Karina, Cucciati Olga, de la Torre Sylvain, de Ravel Loic, Franzetti Paolo, Garilli Bianca, Kampczyk Pawel, Knobel Christian, Kovac Katarina, Le Borgne Jean-Francoi, Le Brun Vincent, López-Sanjuan Carlo, Maier Christian, Mignoli Marco, Pello Roser, Peng Yingjie, Perez-Montero Enrique, Tasca Lidia, Tresse Laurence, Vergani Daniela, Zucca Elena, Barnes Luke, Bordoloi Rongmon, Cappi Alberto, Cimatti Andrea, Coppa Graziano, Koekemoer Anton M., McCracken Henry J., Moresco Michele, Nair Preethi, Oesch Pascal, Pozzetti Lucia, and Welikala Niraj

Subjects
Active galactic nucleus, 010504 meteorology & atmospheric sciences, Stellar population, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Astrophysical investigations, Photometry (optics), surveys, 0103 physical sciences, LARGE-SCALE STRUCTURE, COLOR-MAGNITUDE RELATION, Astrophysics::Solar and Stellar Astrophysics, [INFO]Computer Science [cs], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, STAR-FORMATION HISTORIES, Physics, EVOLUTION SURVEY COSMOS, Group membership, Star formation, Astronomy and Astrophysics, galaxies: fundamental parameters, BAND OPTICAL-PROPERTIES, Galaxy, Redshift, PANORAMIC H-ALPHA, RED-SEQUENCE GALAXIES, Space and Planetary Science, galaxies: clusters: general, DIGITAL SKY SURVEY, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], galaxies: evolution, MORPHOLOGY-DENSITY RELATION, Astrophysics - Cosmology and Nongalactic Astrophysics, WIDE-FIELD SURVEY
Abstract

We present a photometric and spectroscopic study of galaxies at 0.5, Comment: 11 pages, 7 figures, accepted for publication in PASJ

Full Text
View/download PDF

35. Improved constraints on the expansion rate of the Universe up to z similar to 1.1 from the spectroscopic evolution of cosmic chronometers

Author

Piero Rosati, J. F. Le Borgne, C. Knobel, Laurence Tresse, James Dunlop, S. Foucaud, K. Kovac, Angela Bongiorno, Michele Moresco, G. Zamorani, Lidia Tasca, Daniela Vergani, Preethi Nair, Marc Kamionkowski, C. Diener, Olga Cucciati, Graziano Coppa, Lucia Pozzetti, S. Bardelli, Michele Cirasuolo, Anton M. Koekemoer, Ross J. McLure, C. López-Sanjuan, Niraj Welikala, Vincenzo Mainieri, C. M. Carollo, Rongmon Bordoloi, Andrea Cimatti, Raul Jimenez, Licia Verde, John D. Silverman, F. Lamareille, Karina Caputi, H. J. Pearce, Masayuki Tanaka, Luke A. Barnes, A. Iovino, Jean-Paul Kneib, S. de la Torre, William G. Hartley, V. Presotto, Christian Maier, L. de Ravel, E. J. Bradshaw, S. Lilly, Yingjie Peng, Robert Chuter, P. Kampczyk, M. Mignoli, H. J. McCracken, Bianca Garilli, Adam Stanford, Marco Scodeggio, Italo Balestra, P. Franzetti, Omar Almaini, Thierry Contini, R. Pello, Enrique Pérez-Montero, V. Le Brun, Raphael Gobat, A. Cappi, Micol Bolzonella, Alvio Renzini, Daniel Stern, Pascal Oesch, O. Le Fèvre, E. Zucca, Dipartimento di Astronomia, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Department of Chemical Engineering, Columbia University, Columbia University [New York], INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), SUPA, Institute for Astronomy, University of Edinburgh, 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), European Southern Observatory (ESO), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Departament d'Astronomia i Meteorologia [Barcelona], Universitat de Barcelona (UB), INAF - Osservatorio Astronomico di Brera (OAB), University of Chicago, Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Ecole Polytechnique Fédérale de Lausanne (EPFL), 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), Institute for Astronomy [Zürich], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), INAF - Osservatorio Astronomico di Padova (OAPD), INAF- Milano, INAF - Osservatorio Astronomico di Trieste (OAT), 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), College of Computing (GATECH), Georgia Institute of Technology [Atlanta], AUTRES, Dipartimento di Fisica, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB)-Università degli Studi di Milano = University of Milan (UNIMI), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Hunan Normal University (HNU), Università degli studi di Trieste = University of Trieste, INAF - Osservatorio Astrofisico di Arcetri (OAA), 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), Space Telescope Science Institute (STSci), 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), Universitat de Barcelona, 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), California Institute of Technology (CALTECH)-NASA, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), 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), 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), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)-Università degli Studi di Milano [Milano] (UNIMI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Hunan Normal University, Università degli studi di Trieste, 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), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Università di Bologna [Bologna] (UNIBO), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut de Ciènces del Cosmos (ICC), Universitat de Barcelona (UB)-Universitat de Barcelona (UB), Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Brera (INAF), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Università degli studi di Milano [Milano]-Università di Milano-Bicocca, 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), M. Moresco, A. Cimatti, R. Jimenez, L. Pozzetti, G. Zamorani, M. Bolzonella, J. Dunlop, F. Lamareille, M. Mignoli, H. Pearce, P. Rosati, D. Stern, L. Verde, E. Zucca, C.M. Carollo, T. Contini, J.-P. Kneib, O. Le Fevre, S.J. Lilly, V. Mainieri, A. Renzini, M. Scodeggio, I. Balestra, R. Gobat, R. McLure, S. Bardelli, A. Bongiorno, K. Caputi, O. Cucciati, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, C. Knobel, K. Kovac, J.-F. Le Borgne, V. Le Brun, C. Maier, R. Pello', Y. Peng, E. Perez-Montero, V. Presotto, J.D. Silverman, M. Tanaka, L.A.M. Tasca, L. Tresse, D. Vergani, O. Almaini, L. Barne, R. Bordoloi, E. Bradshaw, A. Cappi, R. Chuter, M. Cirasuolo, G. Coppa, C. Diener, S. Foucaud, W. Hartley, M. Kamionkowski, A.M. Koekemoer, C. Lopez-Sanjuan, H.J. McCracken, P. Nair, P. Oesch, A. Stanford, and N. Welikala

Subjects
Astrofísica, Cosmology and Nongalactic Astrophysics (astro-ph.CO), galaxy survey, dark energy experiments, Stellar population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Expanding universe, 01 natural sciences, symbols.namesake, Expansió de l'univers, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Galaxies, Billion years, Galaxy, Redshift, Galàxies, symbols, Elliptical galaxy, Hubble's law, Quintessence, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present new improved constraints on the Hubble parameter H(z) in the redshift range 0.15 < z < 1.1, obtained from the differential spectroscopic evolution of early-type galaxies as a function of redshift. We extract a large sample of early-type galaxies (\sim11000) from several spectroscopic surveys, spanning almost 8 billion years of cosmic lookback time (0.15 < z < 1.42). We select the most massive, red elliptical galaxies, passively evolving and without signature of ongoing star formation. Those galaxies can be used as standard cosmic chronometers, as firstly proposed by Jimenez & Loeb (2002), whose differential age evolution as a function of cosmic time directly probes H(z). We analyze the 4000 �� break (D4000) as a function of redshift, use stellar population synthesis models to theoretically calibrate the dependence of the differential age evolution on the differential D4000, and estimate the Hubble parameter taking into account both statistical and systematical errors. We provide 8 new measurements of H(z) (see Tab. 4), and determine its change in H(z) to a precision of 5-12% mapping homogeneously the redshift range up to z \sim 1.1; for the first time, we place a constraint on H(z) at z \neq 0 with a precision comparable with the one achieved for the Hubble constant (about 5-6% at z \sim 0.2), and covered a redshift range (0.5 < z < 0.8) which is crucial to distinguish many different quintessence cosmologies. These measurements have been tested to best match a ��CDM model, clearly providing a statistically robust indication that the Universe is undergoing an accelerated expansion. This method shows the potentiality to open a new avenue in constrain a variety of alternative cosmologies, especially when future surveys (e.g. Euclid) will open the possibility to extend it up to z \sim 2., 34 pages, 15 figures, 6 tables, published in JCAP. It is a companion to Moresco et al. (2012b, http://arxiv.org/abs/1201.6658) and Jimenez et al. (2012, http://arxiv.org/abs/1201.3608). The H(z) data can be downloaded at http://www.physics-astronomy.unibo.it/en/research/areas/astrophysics/cosmology-with-cosmic-chronometers

Published
2012
Full Text
View/download PDF

36. The dominant role of mergers in the size evolution of massive early-type galaxies since z ~ 1

Author

Michele Moresco, Christian Maier, Lidia Tasca, J. F. Le Borgne, M. Mignoli, Laurence Tresse, Carrie Bridge, Daniela Vergani, Luke A. Barnes, Enrique Pérez-Montero, S. Bardelli, Herve Aussel, Masayuki Tanaka, Mara Salvato, S. de la Torre, C. Knobel, P. Franzetti, O. Le Fèvre, E. Ricciardelli, P. Kampczyk, M. Scodeggio, Angela Bongiorno, C. M. Carollo, O. Ilbert, Lucia Pozzetti, John D. Silverman, S. J. Lilly, Jean-Paul Kneib, Kevin Schawinski, H. J. McCracken, P. Nair, Anton M. Koekemoer, E. Zucca, C. K. Xu, David S Sanders, V. Presotto, K. Kovac, Thierry Contini, Roser Pello, Karina Caputi, C. López-Sanjuan, G. Zamorani, Yoshiaki Taniguchi, Niraj Welikala, Bianca Garilli, Y. Peng, F. Lamareille, Peter Capak, C. T. Liu, V. Le Brun, Graziano Coppa, Rongmon Bordoloi, L. de Ravel, A. Cappi, Micol Bolzonella, Alvio Renzini, Pascal Oesch, V. Mainieri, E. Le Floc'h, Olga Cucciati, A. Iovino, Andrea Cimatti, N. Z. Scoville, 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), C. Lopez-Sanjuan, O. Le Fevre, O. Ilbert, L. A. M. Tasca, C. Bridge, O. Cucciati, P. Kampczyk, L. Pozzetti, C. K. Xu, C. M. Carollo, T. Contini, J.-P. Kneib, S. J. Lilly, V. Mainieri, A. Renzini, D. Sander, M. Scodeggio, N. Z. Scoville, Y. Taniguchi, G. Zamorani, H. Aussel, S. Bardelli, M. Bolzonella, A. Bongiorno, P. Capak, K. Caputi, S. de la Torre, L. de Ravel, P. Franzetti, B. Garilli, A. Iovino, C. Knobel, K. Kovac, F. Lamareille, J.-F. Le Borgne, V. Le Brun, E. Le Floch, C. Maier, H. J. McCracken, M. Mignoli, R. Pello, Y. Peng, E. Perez-Montero, V. Presotto, E. Ricciardelli, M. Salvato, J. D. Silverman, M. Tanaka, L. Tresse, D. Vergani, E. Zucca, L. Barne, R. Bordoloi, A. Cappi, A. Cimatti, G. Coppa, A. Koekemoer, C. T. Liu, M. Moresco, P. Nair, P. Oesch, K. Schawinski, and N. Welikala

Subjects
Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010308 nuclear & particles physics, Mass growth, Velocity dispersion, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy, Early type, cD, Space and Planetary Science, 0103 physical sciences, galaxies: interactions, [INFO]Computer Science [cs], galaxies: elliptical and lenticular, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In this paper we measure the merger fraction and rate, both minor and major, of massive early-type galaxies (M_star >= 10^11 M_Sun) in the COSMOS field, and study their role in mass and size evolution. We use the 30-band photometric catalogue in COSMOS, complemented with the spectroscopy of the zCOSMOS survey, to define close pairs with a separation 10h^-1 kpc = 1/4) and minor (1/10 = 1/10 mergers can explain ~55% of the observed size evolution of these galaxies since z ~ 1. Another ~20% is due to the progenitor bias (younger galaxies are more extended) and we estimate that very minor mergers (mu < 1/10) could contribute with an extra ~20%. The remaining ~5% should come from other processes (e.g., adiabatic expansion or observational effects). This picture also reproduces the mass growth and velocity dispersion evolution of these galaxies. We conclude from these results that merging is the main contributor to the size evolution of massive ETGs at z, Astronomy and Astrophysics, in press. 18 pages, 12 figures, 4 tables

Published
2012
Full Text
View/download PDF

37. A test of the nature of cosmic acceleration using galaxy redshift distortions.

Author

Guzzo L, Pierleoni M, Meneux B, Branchini E, Le Fèvre O, Marinoni C, Garilli B, Blaizot J, De Lucia G, Pollo A, McCracken HJ, Bottini D, Le Brun V, Maccagni D, Picat JP, Scaramella R, Scodeggio M, Tresse L, Vettolani G, Zanichelli A, Adami C, Arnouts S, Bardelli S, Bolzonella M, Bongiorno A, Cappi A, Charlot S, Ciliegi P, Contini T, Cucciati O, de la Torre S, Dolag K, Foucaud S, Franzetti P, Gavignaud I, Ilbert O, Iovino A, Lamareille F, Marano B, Mazure A, Memeo P, Merighi R, Moscardini L, Paltani S, Pellò R, Perez-Montero E, Pozzetti L, Radovich M, Vergani D, Zamorani G, and Zucca E

Abstract

Observations of distant supernovae indicate that the Universe is now in a phase of accelerated expansion the physical cause of which is a mystery. Formally, this requires the inclusion of a term acting as a negative pressure in the equations of cosmic expansion, accounting for about 75 per cent of the total energy density in the Universe. The simplest option for this 'dark energy' corresponds to a 'cosmological constant', perhaps related to the quantum vacuum energy. Physically viable alternatives invoke either the presence of a scalar field with an evolving equation of state, or extensions of general relativity involving higher-order curvature terms or extra dimensions. Although they produce similar expansion rates, different models predict measurable differences in the growth rate of large-scale structure with cosmic time. A fingerprint of this growth is provided by coherent galaxy motions, which introduce a radial anisotropy in the clustering pattern reconstructed by galaxy redshift surveys. Here we report a measurement of this effect at a redshift of 0.8. Using a new survey of more than 10,000 faint galaxies, we measure the anisotropy parameter beta = 0.70 +/- 0.26, which corresponds to a growth rate of structure at that time of f = 0.91 +/- 0.36. This is consistent with the standard cosmological-constant model with low matter density and flat geometry, although the error bars are still too large to distinguish among alternative origins for the accelerated expansion. The correct origin could be determined with a further factor-of-ten increase in the sampled volume at similar redshift.

Published
2008
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results