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4 results on '"GROUP CATALOG"'

1. H0LiCOW - II. Spectroscopic survey and galaxy-group identification of the strong gravitational lens system HE 0435-1223

Author

Frederic Courbin, Tommaso Treu, Stefan Hilbert, Sherry H. Suyu, Christopher D. Fassnacht, Chiara Spiniello, Cristian E. Rusu, N. Rumbaugh, Alessandro Sonnenfeld, Matthew W. Auger, Kenneth C. Wong, Dominique Sluse, Vivien Bonvin, Léon V. E. Koopmans, Philip J. Marshall, Thomas E. Collett, M. Tewes, Georges Meylan, and Astronomy

Subjects
Cosmology and Gravitation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), astro-ph.GA, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, MASS, I, 01 natural sciences, law.invention, STAR-FORMATION, Gravitation, law, galaxies: groups: general, Galaxy group, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, TIME DELAYS, 010308 nuclear & particles physics, Star formation, Astronomy, gravitational lensing: strong, Astronomy and Astrophysics, Quasar, LINE-OF-SIGHT, GROUP CATALOG, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Lens (optics), Gravitational lens, DENSITY PROFILES, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), quasars: individual: HE 0435-1223, astro-ph.CO, CLUSTERS, Astrophysics - Cosmology and Nongalactic Astrophysics, ENVIRONMENTS, HUBBLE CONSTANT
Abstract

Galaxies located in the environment or on the line of sight towards gravitational lenses can significantly affect lensing observables, and can lead to systematic errors on the measurement of $H_0$ from the time-delay technique. We present the results of a systematic spectroscopic identification of the galaxies in the field of view of the lensed quasar HE0435-1223, using the W. M. Keck, Gemini and ESO-Very Large telescopes. Our new catalog triples the number of known galaxy redshifts in the vicinity of the lens, expanding to 102 the number of measured redshifts for galaxies separated by less than 3 arcmin from the lens. We complement our catalog with literature data to gather redshifts up to 15 arcmin from the lens, and search for galaxy groups or clusters projected towards HE0435-1223. We confirm that the lens is a member of a small group that includes at least 12 galaxies, and find 8 other group candidates near the line of sight of the lens. The flexion shift, namely the shift of lensed images produced by high order perturbation of the lens potential, is calculated for each galaxy/group and used to identify which objects produce the largest perturbation of the lens potential. This analysis demonstrates that i) at most three of the five brightest galaxies projected within 12 arcsec of the lens need to be explicitly used in the lens models, and ii) the groups can be treated in the lens model as an external tidal field (shear) contribution., Comment: Version revised to address referee's comments, submitted to MNRAS, 21 pages (incl. Appendix). Data associated to the paper available from the H0LICOW website www.h0licow.org

Published
2017

2. 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

3. 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

4. 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
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