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17 results on '"O. LeFevre"'

1. The CFHT Large Area U-band Deep Survey (CLAUDS)

Author

Masami Ouchi, Nathalie Thibert, Tohru Nagao, Lingjian Chen, Chris J. Willott, Yoshiaki Ono, Stephen Gwyn, Laurence Tresse, Howard K. C. Yee, I. Iwata, Yipeng Jing, John D. Silverman, Yuichi Matsuda, Yuichi Harikane, Wei-Hao Wang, Anneya Golob, T. Moutard, Bau-Ching Hsieh, Kazuhiro Shimasaku, Sylvain de la Torre, James E. Gunn, Atsushi J. Nishizawa, Toru Yamada, Masayuki Tanaka, Jean Coupon, Sylvie Foucaud, Scott Chapman, Michael L. Balogh, Chengze Liu, Xiaohu Yang, Jiasheng Huang, Michael A. Strauss, Cheng Li, Olivier Ilbert, Guillaume Desprez, Stéphane Arnouts, Kevin Bundy, Satoshi Miyazaki, O. LeFevre, Marcin Sawicki, 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 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), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Dark matter, FOS: Physical sciences, Large Synoptic Survey Telescope, 01 natural sciences, dark matter, law.invention, Telescope, Photometry (optics), law, 0103 physical sciences, galaxies: formation, 14. Life underwater, 010303 astronomy & astrophysics, galaxies: statistics, Physics, large-scale structure of universe, 010308 nuclear & particles physics, largescale structure of universe, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, galaxies: haloes, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), cosmology: observations, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Lyman-break galaxy, Astrophysics - Cosmology and Nongalactic Astrophysics, Data reduction
Abstract

著者人数: 40名 (所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 山田, 亨), Number of authors: 40 (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS): Yamada, Toru), Accepted: 2019-09-03, 資料番号: SA1190163000

Published
2019
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2. Gas Fraction and Depletion Time of Massive Star Forming Galaxies at $z \sim$ 3.2: No Change in Global Star Formation Process out to $z>$ 3

Author

Francesca Civano, O. LeFevre, Mark Sargent, Benjamin Magnelli, Lidia Tasca, Alexander Karim, Paolo Cassata, Brent Groves, Vernesa Smolčić, Pascal Oesch, Eva Schinnerer, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire d'Astrophysique de Marseille ( LAM ), and Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Stellar mass, Infrared, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Flattening, galaxies: high-redshift, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, QB, Physics, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, galaxies: evolution, galaxies: ISM, submillimeter: ISM, Space and Planetary Science, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Cosmic time, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The observed evolution of the gas fraction and its associated depletion time in main sequence (MS) galaxies provides insights on how star formation proceeds over cosmic time. We report ALMA detections of the rest-frame $\sim$300$\mu$m continuum observed at 240 GHz for 45 massive ($\rm \langle log(M_{\star}(M_{\odot}))\rangle=10.7$), normal star forming ($\rm \langle log(sSFR(yr^{-1}))\rangle=-8.6$), i.e. MS, galaxies at $\rm z\approx3.2$ in the COSMOS field. From an empirical calibration between cold neutral, i.e. molecular and atomic, gas mass $\rm M_{gas}$ and monochromatic (rest-frame) infrared luminosity, the gas mass for this sample is derived. Combined with stellar mass $\rm M_{\star}$ and star formation rate (SFR) estimates (from {\sc MagPhys} fits) we obtain a median gas fraction of $\rm \mu_{gas}=M_{gas}/M_{\star}=1.65_{-0.19}^{+0.18}$ and a median gas depletion time $\rm t_{depl.}(Gyr)=M_{gas}/SFR=0.68_{-0.08}^{+0.07}$; correction for the location on the MS will only slightly change the values. The reported uncertainties are the $\rm 1\sigma$ error on the median. Our results are fully consistent with the expected flattening of the redshift evolution from the 2-SFM (2 star formation mode) framework that empirically prescribes the evolution assuming a universal, log-linear relation between SFR and gas mass coupled to the redshift evolution of the specific star formation rate (sSFR) of main sequence galaxies. While $\rm t_{dep.}$ shows only a mild dependence on location within the MS, a clear trend of increasing $\rm \mu_{gas}$ across the MS is observed (as known from previous studies). Further we comment on trends within the MS and (in)consistencies with other studies., Comment: 24 pages plus 16 pages references and 5 figures, ApJ, accepted

Published
2016
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3. Galaxies at redshifts 5 to 6 with systematically low dust content and high [C II] emission

Author

Simon J. Lilly, O. LeFevre, Caitlin M. Casey, C. M. Carollo, O. Ilbert, Lin Yan, Peter Capak, Alexander Karim, Gareth J. F. Jones, Chris Carilli, Nick Scoville, Kartik Sheth, Dominik Riechers, Vernesa Smolčić, Laboratoire d'Astrophysique de Marseille (LAM), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Luminous infrared galaxy, Multidisciplinary, PRIRODNE ZNANOSTI. Fizika. Astronomija i astrofizika, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Radio galaxy, Astronomy, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Billion years, Galaxy, Peculiar galaxy, astronomy, Interstellar medium, Galaxy formation and evolution, Elliptical galaxy, NATURAL SCIENCES. Physics. Astronomy and Astrophysics, galaxy, Astrophysics::Galaxy Astrophysics
Abstract

International audience; The rest-frame ultraviolet properties of galaxies during the first three billion years of cosmic time (redshift z \textgreater 4) indicate a rapid evolution in the dust obscuration of such galaxies(1-3). This evolution implies a change in the average properties of the interstellar medium, but the measurements are systematically uncertain owing to untested assumptions(4,5) and the inability to detect heavily obscured regions of the galaxies. Previous attempts to measure the interstellar medium directly in normal galaxies at these red-shifts have failed for a number of reasons(6-9), with two notable exceptions(10,11). Here we report measurements of the forbidden C II emission (that is, [C II]) from gas, and the far-infrared emission from dust, in nine typical star-forming galaxies about one billion years after the Big Bang (z approximate to 5-6). We find that these galaxies have thermal emission that is less than 1/12 that of similar systems about two billion years later, and enhanced [C II] emission relative to the far-infrared continuum, confirming a strong evolution in the properties of the interstellar medium in the early Universe. The gas is distributed over scales of one to eight kiloparsecs, and shows diverse dynamics within the sample. These results are consistent with early galaxies having significantly less dust than typical galaxies seen at z \textless 3 and being comparable in dust content to local low-metallicity systems(12).

Published
2015
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4. Lyman Alpha Emitters at Redshift 5.7 in the COSMOS Field

Author

T. Murayama, Y. Taniguchi, N. Z. Scoville, M. Ajiki, D. B. Sanders, B. Mobasher, H. Aussel, P. Capak, A. Koekemoer, Y. Shioya, T. Nagao, C. Carilli, R. S. Ellis, B. Garilli, M. Giavalisco, M. G. Kitzbichler, O. LeFevre, D. Maccagni, E. Schinnerer, V. Smolcic, S. Tribiano, Y. Komiyama, S. Miyazaki, S. S. Sasaki, J. Koda, H. Karoji, CIMATTI, ANDREA, T. Murayama, Y. Taniguchi, N. Z. Scoville, M. Ajiki, D. B. Sander, B. Mobasher, H. Aussel, P. Capak, A. Koekemoer, Y. Shioya, T. Nagao, C. Carilli, R. S. Elli, B. Garilli, M. Giavalisco, M. G. Kitzbichler, O. LeFevre, D. Maccagni, E. Schinnerer, V. Smolcic, S. Tribiano, A. Cimatti, Y. Komiyama, S. Miyazaki, S. S. Sasaki, J. Koda, and H. Karoji

Subjects
Cosmology: Early Universe, Cosmology: Observation, Galaxies: Evolution, Galaxies: Formation, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

We present results from a narrow-band optical survey of a contiguous area of 1.95 deg^2, covered by the Cosmic Evolution Survey (COSMOS). Both optical narrow-band (lambda_c = 8150 AA and Delta_lambda = 120 AA) and broad-band (B, V, g', r', i', and z') imaging observations were performed with the Subaru prime-focus camera, Suprime-Cam on the Subaru Telescope. We provide the largest contiguous narrow-band survey, targetting Ly alpha emitters (LAEs) at z~5.7. We find a total of 119 LAE candidates at z~5.7. Over the wide-area covered by this survey, we find no strong evidence for large scale clustering of LAEs. We estimate a star formation rate (SFR) density of ~7*10^-4 M_sun yr^-1 Mpc^-3 for LAEs at z~5.7, and compare it with previous measurements., 26 pages, 19 figures. to appear in the ApJ Supplement COSMOS Special Issue

Published
2007

5. Ly alpha EMISSION FROM HIGH-REDSHIFT SOURCES IN COSMOS

Author

H. J. McCracken, D. Masters, Mara Salvato, Shoubaneh Hemmati, Bahram Mobasher, Y. Kakazu, Olivier Ilbert, Ryan Mallery, Nick Scoville, Peter Capak, O. LeFevre, Claudia Scarlata, Space Telescope Science Institute (STSci), California Institute of Technology (CALTECH), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, 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, Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Range (particle radiation), Photon, Extinction, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Redshift, Galaxy, Physical cosmology, 13. Climate action, Space and Planetary Science, 0103 physical sciences, Cosmos (category theory), Alpha decay, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We investigate spectroscopically measured Ly{\alpha} equivalent widths and escape fractions of 244 sources of which 95 are Lyman Break Galaxies (LBGs) and 106 Lyman Alpha Emitters (LAEs) at z~4.2, z~4.8, and z~5.6 selected from intermediate and narrow band observations. The sources were selected from the Cosmic Evolution Survey (COSMOS), and observed with the DEIMOS spectrograph. We find that the distribution of equivalent widths shows no evolution with redshift for both the LBG selected sources and the intermediate/narrowband LAEs. We also find that the Ly{\alpha} escape fraction of intermediate and narrow band LAEs is on average higher and has a larger variation than the escape fraction of LBG selected sources. The escape fraction does not show a dependence with redshift. Similar to what has been found for LAEs at low redshifts, the sources with the highest extinctions show the lowest escape fractions. The range of escape fractions increases with decreasing extinction. This is evidence that the dust extinction is the most important factor affecting the escape of Ly{\alpha} photons, but at low extinctions other factors such as HI covering fraction and gas kinematics can be just as effective at inhibiting the escape of Ly{\alpha} photons., Comment: accepted to ApJ

Published
2012
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6. The Spitzer Extragalactic Representative Volume Survey (SERVS): Survey Definition and Goals

Author

E. A. Gonzalez-Solares, Roy R. Gal, Ray P. Norris, Luca Bizzocchi, Jamie Stevens, Huub Röttgering, S. A. Stanford, Marguerite Pierre, Giovanni Covone, Anna Sajina, Scott Chapman, A. M. J. Mortier, E. Dyke, D. Rigopoulou, Janine Pforr, Hugo Messias, S. Foucaud, A. Rettura, G. Parish, Steve Rawlings, S. J. Oliver, James Dunlop, H. C. Ferguson, Jose Afonso, N. Castro, Russell H. Taylor, Chris Simpson, Ian Smail, Bruno M. B. Henriques, Ross J. McLure, Nick Seymour, S. E. Ridgway, Lori M. Lubin, Tanya Urrutia, Jason Surace, Ismael Perez-Fournon, Antonio Cava, D. M. Nielsen, N. Dubois, M. Trichas, C. J. Lonsdale, Aprajita Verma, Gordon T. Richards, J. T. Falder, Minh Huynh, Philip Best, N. Christopher, James E. Geach, Jacqueline Hodge, R. H. Becker, David M. Alexander, E. van Kampen, Duncan Farrah, David L. Clements, Gordon K. Squires, Marco Grossi, A. Martinez-Sansigre, Alberto Franceschini, Alastair C. Edge, Mattia Vaccari, M. D. Lehnert, J. K. Grant, Peter A. Thomas, Masami Ouchi, Evanthia Hatziminaoglou, J.-S. Huang, Claudia Maraston, Gillian Wilson, Anthony C. S. Readhead, O. LeFevre, Mark Lacy, C. K. Xu, M. Kim, Gregory R. Zeimann, Samantha Hickey, A. K. Romer, Lucia Marchetti, Michael Rowan-Robinson, I. G. Rosebloom, Matt J. Jarvis, David Bonfield, Andreea Petric, J. C. Mauduit, Rob Ivison, Infrared Processing and Analysis Center (IPAC), California Institute of Technology (CALTECH), National Radio Astronomy Observatory [Charlottesville] (NRAO), National Radio Astronomy Observatory (NRAO), Department of Physics and Astronomy [Brighton] (DPA), University of Sussex, Centre for Astrophysics Research [Hatfield], University of Hertfordshire [Hatfield] (UH), Institute of Cosmology and Gravitation [Portsmouth] (ICG), University of Portsmouth, Dipartimento di Fisica e Astronomia 'Galileo Galilei', Università degli Studi di Padova = University of Padua (Unipd), University of the Western Cape (UWC), Visual servoing in robotics, computer vision, and augmented reality (Lagadic), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE (IRISA-D5), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Department of Physics and Astronomy [Univ California Davis] (Physics - UC Davis), University of California [Davis] (UC Davis), University of California (UC)-University of California (UC), Institute of Astronomy [Cambridge], University of Cambridge [UK] (CAM), National Optical Astronomy Observatory (NOAO), Observatório Astronómico de Lisboa, Centro de Astronomia e Astrofísica da Universidade de Lisboa (CAAUL), Universidade de Lisboa = University of Lisbon (ULISBOA), Department of Physics and Astronomy [Riverside], University of California [Riverside] (UC Riverside), Department of Physics [Montréal], McGill University = Université McGill [Montréal, Canada], International Centre for Radio Astronomy Research (ICRAR), The University of Western Australia (UWA)-Government of Western Australia-Curtin University [Perth], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC), CSIRO Astronomy and Space Science, Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Department of Physics - Drexel University, Drexel University, Lawrence Livermore National Laboratory (LLNL), Department of Physics [Durham University], Durham University, Royal Observatory Edinburgh (ROE), University of Edinburgh, Instituto de Astrofisica de Canarias (IAC), Department of Physics [Oxford], University of Oxford, Astrophysics Group, Blackett Laboratory, Imperial College London-Imperial College London, Dipartimento di Scienze Fisiche [Naples], University of Naples Federico II = Università degli studi di Napoli Federico II, Institute for Computational Cosmology (ICC), Space Telescope Science Institute (STSci), National Taiwan Normal University (NTNU), University of Hawai'i [Honolulu] (UH), Department of Physics and Astronomy [Calgary], University of Calgary, European Southern Observatory (ESO), 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), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Department of Astronomy [Madison], University of Wisconsin-Madison, Carnegie Institution for Science, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Caltech Department of Astronomy [Pasadena], Cerro Tololo Inter-American Observatory, Leiden Observatory [Leiden], Universiteit Leiden, Haverford College, Astrophysics Research Institute [Liverpool] (ARI), Liverpool John Moores University (LJMU), Leibniz Institute for Astrophysics Potsdam (AIP), Mauduit, J. C., Lacy, M., Farrah, D., Surace, J. A., Jarvis, M., Oliver, S., Maraston, C., Vaccari, M., Marchetti, L., Zeimann, G., Gonzalez Solares, E. A., Pforr, J., Petric, A. O., Henriques, B., Thomas, P. A., Afonso, J., Rettura, A., Wilson, G., Falder, J. T., Geach, J. E., Huynh, M., Norris, R. P., Seymour, N., Richards, G. T., Stanford, S. A., Alexander, D. M., Becker, R. H., Best, P. N., Bizzocchi, L., Bonfield, D., Castro, N., Cava, A., Chapman, S., Christopher, N., Clements, D. L., Covone, Giovanni, Dubois, N., Dunlop, J. S., Dyke, E., Edge, A., Ferguson, H. C., Foucaud, S., Franceschini, A., Gal, R. R., Grant, J. K., Grossi, M., Hatziminaoglou, E., Hickey, S., Hodge, J. A., Huang, J. S., Ivison, R. J., Kim, M., Lefevre, O., Lehnert, M., Lonsdale, C. J., Lubin, L. M., Mclure, R. J., Messias, H., Martinez Sansigre, A., Mortier, A. M. J., Nielsen, D. M., Ouchi, M., Parish, G., Perez Fournon, I., Pierre, M., Rawlings, S., Readhead, A., Ridgway, S. E., Rigopoulou, D., Romer, A. K., Rosebloom, I. G., Rottgering, H. J. A., Rowan Robinson, M., Sajina, A., Simpson, C. J., Smail, I., Squires, G. K., Stevens, J. A., Taylor, R., Trichas, M., Urrutia, T., van Kampen, E., Verma, A., Xu, C. K., Universita degli Studi di Padova, University of the Western Cape, CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Department of Physics [Davis], University of California-University of California, Universidade de Lisboa (ULISBOA), University of California [Riverside] (UCR), University of Oxford [Oxford], Università degli studi di Napoli Federico II, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Carnegie Institution for Science [Washington], and Universiteit Leiden [Leiden]

Subjects
Physics, evoluzione delle galassie, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Volume (computing), FOS: Physical sciences, Astronomy and Astrophysics, Context (language use), Quasar, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy, Spitzer Space Telescope, Space and Planetary Science, 0103 physical sciences, Galaxy formation and evolution, Chandra Deep Field South, survey astronomica, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the Spitzer Extragalactic Representative Volume Survey (SERVS), an 18 square degrees medium-deep survey at 3.6 and 4.5 microns with the post-cryogenic Spitzer Space Telescope to ~2 microJy (AB=23.1) depth of five highly observed astronomical fields (ELAIS-N1, ELAIS-S1, Lockman Hole, Chandra Deep Field South and XMM-LSS). SERVS is designed to enable the study of galaxy evolution as a function of environment from z~5 to the present day, and is the first extragalactic survey both large enough and deep enough to put rare objects such as luminous quasars and galaxy clusters at z>1 into their cosmological context. SERVS is designed to overlap with several key surveys at optical, near- through far-infrared, submillimeter and radio wavelengths to provide an unprecedented view of the formation and evolution of massive galaxies. In this paper, we discuss the SERVS survey design, the data processing flow from image reduction and mosaicing to catalogs, as well as coverage of ancillary data from other surveys in the SERVS fields. We also highlight a variety of early science results from the survey., 21 pages, 23 figures, published in PASP. This version differs slightly from PASP, mainly due to formatting issues. Figure 2 was also corrected from the previous version

Published
2012
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7. The XMM-LSS survey: optical assessment and properties of different X-ray selected cluster classes

Author

J. P. Lefevre, Jean Surdej, Jean-Baptiste Melin, C. Libbrecht, O. LeFevre, G. Hertling, Gaspar Galaz, Alain Detal, T. Sadibekova, C. Adami, D. Maccagni, L. Chiappetti, O. Ilbert, Trevor J. Ponman, B. Garilli, L. Tresse, L. Guennou, Marguerite Pierre, Hernan Quintana, Florian Pacaud, Pierre-Alain Duc, Bruno Altieri, Alain Mazure, A. Gueguen, I. Valtchanov, H. Aussel, J. P. Willis, V. LeBrun, Nicolas Clerc, P. G. Sprimont, Davide Ricci, Masayuki Akiyama, 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
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmic web, 0103 physical sciences, Cluster (physics), Spectroscopy, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Velocity dispersion, Astronomy and Astrophysics, Redshift, Galaxy, Space and Planetary Science, Low Mass, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

XMM and Chandra opened a new area for the study of clusters of galaxies. Not only for cluster physics but also, for the detection of faint and distant clusters that were inaccessible with previous missions. This article presents 66 spectroscopically confirmed clusters (0.05, Comment: Seven figures given in jpg format due to space limitation. The full sample of X-ray clusters with associated optical spectroscopic data is available via the L3SDB database (http://l3sdb.in2p3.fr:8080/l3sdb/)

Published
2011
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8. Erratum: 'Photometric Properties of Lyα Emitters at z ≈ 4.86 in the COSMOS 2 Square Degree Field' (2009, ApJ, 696, 546)

Author

Vernesa Smolčić, Tohru Nagao, B. Garilli, Takashi Murayama, Herve Aussel, Yoshi Taniguchi, T. Saito, O. LeFevre, Peter Capak, A. Nakajima, D. B. Sanders, Y. Ideue, Eva Schinnerer, Richard S. Ellis, Chris Carilli, Kenta Matsuoka, Mauro Giavalisco, Nick Scoville, Jeyhan S. Kartaltepe, Anton M. Koekemoer, S. S. Sasaki, Chris Impey, Yasuhiro Shioya, Jonathan R. Trump, Bahram Mobasher, and Manfred G. Kitzbichler

Subjects
Physics, Field (physics), Space and Planetary Science, Astronomy and Astrophysics, Astrophysics, photometric properties, Square degree
Abstract

This is an erratum for the article 2009 ApJ 696 546.

Published
2009

9. The First Release COSMOS Optical and Near-IR Data and Catalog

Author

P. Capak, H. Aussel, M. Ajiki, H. J. McCracken, B. Mobasher, N. Scoville, P. Shopbell, Y. Taniguchi, D. Thompson, S. Tribiano, S. Sasaki, A. W. Blain, M. Brusa, C. Carilli, A. Comastri, C. M. Carollo, P. Cassata, J. Colbert, R. S. Ellis, M. Elvis, M. Giavalisco, W. Green, L. Guzzo, G. Hasinger, O. Ilbert, C. Impey, K. Jahnke, J. Kartaltepe, J.‐P. Kneib, J. Koda, A. Koekemoer, Y. Komiyama, A. Leauthaud, O. Lefevre, S. Lilly, C. Liu, R. Massey, S. Miyazaki, T. Murayama, T. Nagao, J. A. Peacock, A. Pickles, C. Porciani, A. Renzini, J. Rhodes, M. Rich, M. Salvato, D. B. Sanders, C. Scarlata, D. Schiminovich, E. Schinnerer, M. Scodeggio, K. Sheth, Y. Shioya, L. A. M. Tasca, J. E. Taylor, L. Yan, G. Zamorani, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), P. Capak, H. Aussel, M. Ajiki, H. J. McCracken, B. Mobasher, N. Scoville, P. Shopbell, Y. Taniguchi, D. Thompson, S. Tribiano, S. Sasaki, A. W. Blain, M. Brusa, C. Carilli, A. Comastri, C. M. Carollo, P. Cassata, J. Colbert, R. S. Elli, M. Elvi, M. Giavalisco, W. Green, L. Guzzo, G. Hasinger, O. Ilbert, C. Impey, K. Jahnke, J. Kartaltepe, J. Kneib, J. Koda, A. Koekemoer, Y. Komiyama, A. Leauthaud, O. L. Fevre, S. Lilly, C. Liu, R. Massey, S. Miyazaki, T. Murayama, T. Nagao, J. A. Peacock, A. Pickle, C. Porciani, A. Renzini, J. Rhode, M. Rich, M. Salvato, D. B. Sander, C. Scarlata, D. Schiminovich, E. Schinnerer, M. Scodeggio, K. Sheth, Y. Shioya, L. A. M., J. E. Taylor, L. Yan, and G. Zamorani

Subjects
Population, Large-scale structure of universe, FOS: Physical sciences, Field of view, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Surveys, 01 natural sciences, Imaging data, Cosmology: Observations, Spectral line, law.invention, Photometry (optics), Telescope, law, 0103 physical sciences, Galaxies: Evolution, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, 010308 nuclear & particles physics, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Galaxy, Panchromatic film, Cosmology: Large-Scale Structure of Universe, Cosmology: Observation, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Cosmology: observations, Galaxies: evolution, Astrophysics::Earth and Planetary Astrophysics
Abstract

We present imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3um and 2.4um. These include data taken on the Subaru 8.3m telescope, the KPNO and CTIO 4m telescopes, and the CFHT 3.6m telescope. Special techniques are used to ensure that the relative photometric calibration is better than 1% across the field of view. The absolute photometric accuracy from standard star measurements is found to be 6%. The absolute calibration is corrected using galaxy spectra, providing colors accurate to 2% or better. Stellar and galaxy colors and counts agree well with the expected values. Finally, as the first step in the scientific analysis of these data we construct panchromatic number counts which confirm that both the geometry of the universe and the galaxy population are evolving., Comment: 19 pages, 13 figures, 14 tables, Accepted to ApJS for COSMOS speciall issue

Published
2007
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10. Large Structures and Galaxy Evolution in COSMOS at z < 1.1

Author

Peter Capak, D. B. Sanders, H. Aussel, David Thompson, A. Finoguenov, M. Giavalisco, G. Hasinger, Alvio Renzini, Yoshiaki Taniguchi, James E. Taylor, D. Calzetti, Jin Koda, Mara Salvato, Bahram Mobasher, Jason Rhodes, H. J. McCracken, Andrew Blain, Richard S. Ellis, Amr El-Zant, Richard Massey, Patrick L. Shopbell, Shunji S. Sasaki, Nick Scoville, Kartik Sheth, O. LeFevre, Eva Schinnerer, Andrew J. Benson, Luigi Guzzo, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), and Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Surveys, Cosmology: Observations, Physical cosmology, Galaxy formation and evolution, Astrophysics::Solar and Stellar Astrophysics, education, Astrophysics::Galaxy Astrophysics, Photometric redshift, Physics, Field galaxy, education.field_of_study, Cosmology: Dark Matter, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Galaxy, Redshift, Cosmology: Large-Scale Structure of Universe, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Spectral energy distribution
Abstract

We present the first identification of large-scale structures (LSS) at z $< 1.1$ in the Cosmic Evolution Survey (COSMOS). The structures are identified from adaptive smoothing of galaxy counts in the pseudo-3d space ($\alpha,\delta$,z) using the COSMOS photometric redshift catalog. The technique is tested on a simulation including galaxies distributed in model clusters and a field galaxy population -- recovering structures on all scales from 1 to 20\arcmin without {\it a priori} assumptions for the structure size or density profile. Our procedure makes {\bf no} {\it a priori} selection on galaxy spectral energy distribution (SED, for example the Red Sequence), enabling an unbiased investigation of environmental effects on galaxy evolution. The COSMOS photometric redshift catalog yields a sample of $1.5\times10^5$ galaxies with redshift accuracy, $\Delta z_{FWHM}/(1+z) \leq 0.1$ at z $< 1.1$ down to I$_{AB} \leq 25$ mag. Using this sample of galaxies, we identify 42 large-scale structures and clusters. abstract truncated for astroph 25 line limit -- see preprint, Comment: 72 pages with 29 pages of figures, for cosmos apj suppl special issue

Published
2007
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11. The Cosmic Evolution Survey (COSMOS) -- Overview

Author

Nick Scoville, D. Schminovich, Chris Impey, C. M. Carollo, Alvio Renzini, Marcella Brusa, Patrick L. Shopbell, Mauro Giavalisco, Jean-Paul Kneib, Neil De Grasse Tyson, David B. Sanders, Herve Aussel, Guenther Hasinger, R. M. Rich, Martin Elvis, O. LeFevre, Simon J. Lilly, Bahram Mobasher, Yoshiaki Taniguchi, Eva Schinnerer, Peter Capak, Luigi Guzzo, Scoville N., Aussel H., Brusa M., Capak P., Carollo C. M., Elvis M., Giavalisco M., Guzzo L., Hasinger G., Impey C., Kneib J.-P., LeFevre O., Lilly S.J., Mobasher B., Renzini A., Rich R.M., Sanders D.B., Schinnerer E., Schminovich D., Shopbell P., Taniguchi Y., and Tyson N.D.

Subjects
GALAXIES: EVOLUTION, Physics, Active galactic nucleus, 010308 nuclear & particles physics, Star formation, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Dark matter, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Cosmic variance, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, GALAXIES: SURVEYS, Galaxy, Redshift, Physical cosmology, Space and Planetary Science, 0103 physical sciences, Cosmos (category theory), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The Cosmic Evolution Survey (COSMOS) is designed to probe the correlated evolution of galaxies, star formation, active galactic nuclei (AGN) and dark matter (DM) with large-scale structure (LSS) over the redshift range z $> 0.5 $ to 6. The survey includes multi-wavelength imaging and spectroscopy from X-ray to radio wavelengths covering a 2 $\sq$��area, including HST imaging. Given the very high sensitivity and resolution of these datasets, COSMOS also provides unprecedented samples of objects at high redshift with greatly reduced cosmic variance, compared to earlier surveys. Here we provide a brief overview of the survey strategy, the characteristics of the major COSMOS datasets, and summarize the science goals., 22 pages, 3 figures

Published
2006

12. The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field

Author

Michael Rich, Tohru Nagao, Alvio Renzini, Günther Hasinger, Shunji S. Sasaki, Sadanori Okamura, Yutaka Komiyama, Chris Carilli, Eva Schinnerer, Peter Capak, Luigi Guzzo, T. Murayama, Patrick L. Shopbell, Mauro Giavalisco, Simon J. Lilly, Norio Kaifu, O. LeFevre, Herve Aussel, Nick Scoville, Yoshiaki Taniguchi, Bahram Mobasher, David B. Sanders, Jin Koda, Hiroshi Karoji, Kouji Ohta, M. Ajiki, Nobuo Arimoto, Satoshi Miyazaki, Chris Impey, and Yasuhiro Shioya

Subjects
Physics, Field (physics), 010308 nuclear & particles physics, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Redshift, Galaxy, Physical cosmology, Scientific analysis, Optical imaging, Space and Planetary Science, 0103 physical sciences, Subaru Telescope, 010303 astronomy & astrophysics, Cosmos
Abstract

We present deep optical imaging observations of 2 square degree area, covered by the Cosmic Evolution Survey (COSMOS), made by the prime-focus Camera (Supreme-Cam) on the 8.2m Subaru Telescope. Observations were done in six broad-band [B (4459.7 AA), g' (4723.1 AA), V (5483.8 AA), r' (6213.0 AA), i' (7640.8 AA), z' (8855.0 AA)], and one narrow-band (NB816) filters. A total of 10^6 galaxies were detected to i'~26.5 mag. These data, combined with observations at u* and K-band are used to construct the photometric catalogs for the COSMOS and to measure their photometric redshifts, multi-band spectral energy distributions, stellar masses and identification of high redshift candidates. This catalog provides multi-waveband data for scientific analysis of the COSMOS survey., 46 pages, 32 figures, accepted for the COSMOS special issue of ApJS

Published
2006

13. The VIMOS-VLT Deep Survey. The evolution of galaxy clustering per spectral type to z ~= 1.5

Author

Christian Marinoni, T. Contini, Luigi Guzzo, Paolo Ciliegi, G. Zamorani, A. Cappi, O. Cucciati, Angela Bongiorno, L. Tresse, Stephane Arnouts, Lucia Pozzetti, Yannick Mellier, V. Ripepi, E. Zucca, D. Rizzo, V. LeBrun, S. Paltani, Roberto Scaramella, Stéphane Charlot, G. Mathez, O. LeFevre, R. Merighi, I. Gavignaud, A. Zanichelli, M. Bondi, B. Meneux, D. Bottini, Alain Mazure, G. Vettolani, J. P. Picat, M. Bolzonella, A. Iovino, R. Pello, M. Arnaboldi, G. Busarello, B. Garilli, Marco Scodeggio, C. Adami, L. Gregorini, Mario Radovich, F. Lamareille, P. Franzetti, Paola Merluzzi, O. Ilbert, Bruno Marano, D. Maccagni, H. J. McCracken, Sylvie Foucaud, A. Pollo, S. Bardelli, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF-Osservatorio Astronomico di Brera (INAF-OAB), INAF-Osservatorio Astronomico di Bologna (OABO), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), INAF-Osservatorio Astronomico di Brera, 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), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), 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), Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF-Milano), 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), INAF-Osservatorio Astronomico di Roma (INAF-OAR), IRA-INAF, Bologna, INAF-Osservatorio Astronomico di Capodimonte (INAF-OAC), Max-Planck-Institut für Astrophysik (MPA), School of Physics and Astronomy, University of Nottingham, European Southern Observatory (ESO), INTEGRAL Science Data Centre, 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), Meneux B., Le Fèvre O., Guzzo L., Pollo A., Cappi A., Ilbert O., Iovino A., Marinoni C., McCracken H. J., Bottini D., Garilli B., Le Brun V., Maccagni D., Picat J.P., Scaramella R., Scodeggio M., Tresse L., Vettolani G., Zanichelli A., Adami C., Arnouts S., Arnaboldi M., Bardelli S., Bolzonella M., Charlot S., Ciliegi P., Contini T., Foucaud S., Franzetti P., Gavignaud I., Marano B., Mazure A., Merighi R., Paltani S., Pello' R., Pozzetti L., Radovich M., Zamorani G., Zucca E., Bondi M., Bongiorno A., Busarello G., Cucciati O., Gregorini L., Lamareille F., Mathez G., Mellier Y., Merluzzi P., Ripepi V., and Rizzo D.

Subjects
Population, Dark matter, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Type (model theory), Stellar classification, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, 10. No inequality, education, Cluster analysis, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, 010308 nuclear & particles physics, Star formation, Astrophysics (astro-ph), Astronomy and Astrophysics, Galaxy, Space and Planetary Science, Halo, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

We measure the evolution of clustering for galaxies with different spectral types from 6495 galaxies with 17.51.2, due to the growth in clustering of the star-forming population. We find similar results when splitting the sample into `red' and `blue' galaxies using the observed color bi-modality. When compared to the expected linear growth of mass fluctuations, a natural interpretation of these observations is that: (a) the assembly of massive early type galaxies is already mostly complete in the densest dark matter halos at z~=1; (b) luminous late-type galaxies are located in higher-density, more clustered regions of the Universe at z~=1.5 than at present, indicating that star formation activity is progressively increasing, going back in time, in the higher-density peaks that today are mostly dominated by old galaxies., 12 pages, Accepted on 11-Feb-06 for publication in Astronomy and Astrophysics

Published
2006
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14. GAS FRACTION AND DEPLETION TIME OF MASSIVE STAR-FORMING GALAXIES AT z ∼ 3.2: NO CHANGE IN GLOBAL STAR FORMATION PROCESS OUT TO z > 3.

Author

E. Schinnerer, B. Groves, M. T. Sargent, A. Karim, P. A. Oesch, B. Magnelli, O. LeFevre, L. Tasca, F. Civano, P. Cassata, and V. Smolčić

Subjects
GALAXIES, STAR formation, STELLAR luminosity function, LUMINOSITY, STELLAR mass
Abstract

The observed evolution of the gas fraction and its associated depletion time in main-sequence (MS) galaxies provides insights on how star formation proceeds over cosmic time. We report ALMA detections of the rest-frame ∼300 μm continuum observed at 240 GHz for 45 massive (), normal star-forming (), i.e., MS, galaxies at in the COSMOS field. From an empirical calibration between cold neutral, i.e., molecular and atomic, gas mass and monochromatic (rest-frame) infrared luminosity, the gas mass for this sample is derived. Combined with stellar mass and star formation rate (SFR) estimates (from MagPhys fits) we obtain a median gas fraction of and a median gas depletion time correction for the location on the MS will only slightly change the values. The reported uncertainties are the error on the median. Our results are fully consistent with the expected flattening of the redshift evolution from the 2-SFM (2 star formation mode) framework which empirically prescribes the evolution assuming a universal, log-linear relation between SFR and gas mass coupled to the redshift evolution of the specific star formation rate (sSFR) of MS galaxies. While shows only a mild dependence on location within the MS, a clear trend of increasing across the MS is observed (as known from previous studies). Further, we comment on trends within the MS and (in)consistencies with other studies. [ABSTRACT FROM AUTHOR]

Published
2016
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15. 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
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16. Galaxies at redshifts 5 to 6 with systematically low dust content and high [C II] emission.

Author

Capak PL, Carilli C, Jones G, Casey CM, Riechers D, Sheth K, Carollo CM, Ilbert O, Karim A, LeFevre O, Lilly S, Scoville N, Smolcic V, and Yan L

Abstract

The rest-frame ultraviolet properties of galaxies during the first three billion years of cosmic time (redshift z > 4) indicate a rapid evolution in the dust obscuration of such galaxies. This evolution implies a change in the average properties of the interstellar medium, but the measurements are systematically uncertain owing to untested assumptions and the inability to detect heavily obscured regions of the galaxies. Previous attempts to measure the interstellar medium directly in normal galaxies at these redshifts have failed for a number of reasons, with two notable exceptions. Here we report measurements of the forbidden C ii emission (that is, [C II]) from gas, and the far-infrared emission from dust, in nine typical star-forming galaxies about one billion years after the Big Bang (z ≈ 5-6). We find that these galaxies have thermal emission that is less than 1/12 that of similar systems about two billion years later, and enhanced [C II] emission relative to the far-infrared continuum, confirming a strong evolution in the properties of the interstellar medium in the early Universe. The gas is distributed over scales of one to eight kiloparsecs, and shows diverse dynamics within the sample. These results are consistent with early galaxies having significantly less dust than typical galaxies seen at z < 3 and being comparable in dust content to local low-metallicity systems.

Published
2015
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17. Emergency medical service in the stroke chain of survival.

Author

Chenaitia H, Lefevre O, Ho V, Squarcioni C, Pradel V, Fournier M, Toesca R, Michelet P, and Auffray JP

Subjects
Aged, Aged, 80 and over, Brain Ischemia mortality, Female, France, Humans, Ischemic Attack, Transient diagnosis, Male, Middle Aged, Stroke mortality, Brain Ischemia diagnosis, Emergency Medical Services, Stroke diagnosis
Abstract

Background: The Emergency Medical Services (EMS) play a primordial role in the early management of adults with acute ischaemic stroke (AIS). The aim of this study was to evaluate the role and effectiveness of the EMS in the stroke chain of survival in Marseille., Methods: A retrospective observational study was conducted in patients treated for AIS or transient ischaemic attack in three emergency departments and at the Marseille stroke centre over a period of 12 months., Results: In 2009, of 1034 patients ultimately presenting a diagnosis of AIS or transient ischaemic attack, 74% benefited from EMS activation. Dispatchers correctly diagnosed 57% of stroke patients. The symptoms most frequently reported included limb weakness, speech problems and facial paresis. Elements resulting in misdiagnosis by dispatchers were general discomfort, chest pain, dyspnoea, fall or vertigo. Stroke patients not diagnosed by emergency medical dispatchers but calling within 3 h of symptom onset accounted for 20% of cases., Conclusion: Our study demonstrates that public intervention programmes must stress the urgency of recognizing stroke symptoms and the importance of calling EMS through free telephone numbers. Further efforts are necessary to disseminate guidelines for healthcare providers concerning stroke recognition and the new therapeutic possibilities in order to increase the likelihood of acute stroke patients presenting to a stroke team early enough to be eligible for acute treatment. In addition, EMS dispatchers should receive further training about atypical stroke symptoms, and 'Face Arm Speech Test' tests must be included in the routine questionnaires used in emergency medical calls concerning elderly persons.

Published
2013
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