THE COLORS OF CENTRAL AND SATELLITE GALAXIES IN zCOSMOS OUT TO z ≃ 0.8 AND IMPLICATIONS FOR QUENCHING

被引：48

作者：

Knobel, C. ^{[1
]}

Lilly, S. J. ^{[1
]}

Kovac, K. ^{[1
]}

Peng, Y. ^{[1
]}

Bschorr, T. J. ^{[1
]}

Carollo, C. M. ^{[1
]}

Contini, T. ^{[2
,3
]}

Kneib, J. -P. ^{[4
]}

Le Fevre, O. ^{[4
]}

Mainieri, V. ^{[5
]}

Renzini, A. ^{[6
]}

Scodeggio, M. ^{[7
]}

Zamorani, G. ^{[8
]}

Bardelli, S. ^{[8
]}

Bolzonella, M. ^{[8
]}

Bongiorno, A. ^{[9
]}

Caputi, K. ^{[1
,10
]}

Cucciati, O. ^{[11
]}

de la Torre, S. ^{[12
]}

de Ravel, L. ^{[12
]}

Franzetti, P. ^{[7
]}

Garilli, B. ^{[7
]}

Iovino, A. ^{[11
]}

Kampczyk, P. ^{[1
]}

Lamareille, F. ^{[2
,3
]}

Le Borgne, J. -F. ^{[2
,3
]}

Le Brun, V. ^{[4
]}

Maier, C. ^{[1
,13
]}

Mignoli, M. ^{[8
]}

Pello, R. ^{[2
,3
]}

Perez Montero, E. ^{[2
,3
,14
]}

Presotto, V. ^{[11
,15
]}

Silverman, J. ^{[16
]}

Tanaka, M. ^{[17
]}

Tasca, L. ^{[4
]}

Tresse, L. ^{[4
]}

Vergani, D. ^{[8
,18
]}

Zucca, E. ^{[8
]}

Barnes, L. ^{[1
]}

Bordoloi, R. ^{[1
]}

Cappi, A. ^{[8
]}

Cimatti, A. ^{[19
]}

Coppa, G. ^{[9
]}

Koekemoer, A. M. ^{[20
]}

Lopez-Sanjuan, C. ^{[4
,21
]}

McCracken, H. J. ^{[22
]}

Moresco, M. ^{[19
]}

Nair, P. ^{[8
]}

Pozzetti, L. ^{[8
]}

Welikala, N. ^{[23
,24
]}

机构：

[1] ETH, Inst Astron, CH-8093 Zurich, Switzerland

[2] CNRS, Inst Rech Astrophys & Planetol, F-31400 Toulouse, France

[3] Univ Toulouse, UPS OMP, IRAP, F-31400 Toulouse, France

[4] Aix Marseille Univ, CNRS, Lab Astrophys Marseille, F-13388 Marseille 13, France

[5] European So Observ, D-85748 Garching, Germany

[6] INAF Osservatorio Astron Padova, I-35122 Padua, Italy

[7] INAF IASF Milano, I-20133 Milan, Italy

[8] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy

[9] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[10] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands

[11] INAF Osservatorio Astron Brera, I-20121 Milan, Italy

[12] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

[13] Univ Vienna, Dept Astron, A-1180 Vienna, Austria

[14] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[15] Univ Trieste, Dipartimento Fis, Sez Astron, I-34143 Trieste, Italy

[16] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe, Kavli IPMU,WPI, Kashiwa, Chiba 2778583, Japan

[17] Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan

[18] INAF IASF Bologna, I-40129 Bologna, Italy

[19] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy

[20] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[21] Ctr Estudios Fis Cosmos Aragon, E-44001 Teruel, Spain

[22] Univ Paris 06, CNRS, UMR7095, Inst Astrophys Paris, F-75014 Paris, France

[23] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France

[24] CNRS, F-91405 Orsay, France

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 769卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

cosmology: observations; galaxies: evolution; galaxies: groups: general; galaxies: luminosity function; mass function; galaxies: statistics; STELLAR MASS FUNCTION; DIGITAL SKY SURVEY; STAR-FORMATION; RED SEQUENCE; REDSHIFT SURVEY; SPECTROSCOPIC SAMPLE; QUIESCENT GALAXIES; GROUP CATALOG; COSMOS SURVEY; EVOLUTION;

D O I：

10.1088/0004-637X/769/1/24

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the red fraction of central and satellite galaxies in the large zCOSMOS group catalog out to z similar or equal to 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., that 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 to what it is today when the universe was about half its present age.

引用

页数：10

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