2012A&A...543A..19R


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.21CEST15:54:30

2012A&A...543A..19R - Astronomy and Astrophysics, volume 543A, 19-19 (2012/7-1)

Galaxy mass, cluster-centric distance and secular evolution: their role in the evolution of galaxies in clusters in the last 10 gyr.

RAICHOOR A. and ANDREON S.

Abstract (from CDS):

Galaxy mass and environment are known to play a key role in galaxy evolution: studying galaxy colors as a function of redshift, galaxy mass, and environment offers a powerful diagnosis to disentangle the role of each. We study the simultaneous dependence of the fraction of blue galaxies fblue on secular evolution, environment, and galaxy mass with a well-controlled cluster sample. We are thus able to study the evolution and respective role of the cessation of star formation history (SFH) in clusters caused by galaxy mass (``mass quenching'') or by environment (``environmental quenching''). We defined an homogenous X-ray selected cluster sample (25 clusters with 0<z<1 and one cluster at z∼2.2), having similar masses and well-defined sizes. Using multicolor photometry and a large spectroscopic sample to calibrate photometric redshifts, we carefully estimated fblue for each cluster at different galaxy mass and cluster-centric distance bins. We then fitted the dependence of fblue on redshift (z), environment (r/r200) and galaxy mass (M) with a simple model. fblue increases with cluster-centric distance with a slope α=1.2–0.3+0.4, decreases with galaxy mass with a slope β=-3.8–0.5+0.6, and increases with redshift with a slope γ=3.3–0.6+0.7. The data also require for the first time a differential evolution with galaxy mass of fblue with redshift, with lower mass galaxies evolving slower by a factor ζ=-3.9–1.1+0.9. Our study shows that the processes responsible for the cessation of star formation in clusters are effective at all epochs (z≲2.2), and more effective in denser environments and for more massive galaxies. We found that the mass and environmental quenchings are separable, that environmental quenching does not change with epoch, and that mass quenching is a dynamical process, i.e. its evolutionary rate is mass-dependent. Our study extends the downsizing-like scenario, where the most massive galaxies have their properties set at a very high redshift, to the cluster environment and all galaxies. It illustrates the need to disentangle galaxy mass and cluster-centric distance to properly estimate the behavior of fblue in clusters.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: JKCS 041 - galaxies: evolution - galaxies: star formation

Simbad objects: 34

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Number of rows : 34

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 RCS J022144-0321.7 ClG 02 21 42.0 -03 21 47           ~ 15 0
2 RzCS 056 ClG 02 21 45.8 -03 46 08           ~ 32 0
3 XMMXCS J022204.5-043246.3 ClG 02 22 05.6 -04 32 47           ~ 14 0
4 XMMXCS J022357.6-043519.7 ClG 02 23 57.4 -04 35 17           ~ 14 0
5 XMMXCS J022401.1-050542.2 ClG 02 24 00.6 -05 05 25           ~ 20 0
6 2XLSSd J022404.2-041331 ClG 02 24 04.19 -04 13 26.6           ~ 37 0
7 XLSSC 007 ClG 02 24 09.0 -03 55 09           ~ 7 0
8 XMMXCS J022433.9-041442.7 ClG 02 24 33.8 -04 14 15           ~ 25 0
9 2XLSSd J022456.1-050801 ClG 02 24 56.15 -05 07 59.4   16.91   15.48   ~ 12 0
10 XLSSU J022457.1-034853 ClG 02 24 57.1 -03 48 53           ~ 25 0
11 RzCS 774 ClG 02 25 20.2 -03 48 30           ~ 14 0
12 RzCS 262 ClG 02 25 24.6 -04 40 45       17.3   ~ 32 0
13 XLSSC 004 ClG 02 25 28.4 -05 06 57           ~ 4 0
14 2MASX J02253077-0414183 ClG 02 25 30.6 -04 14 20           ~ 29 0
15 2XLSSd J022532.3-035512 ClG 02 25 32.48 -03 55 09.5           ~ 15 0
16 NPM1G -05.0105 G 02 26 09.6703118869 -04 58 05.658450961   16.11   14.75   ~ 22 0
17 XLSSC 011 ClG 02 26 10.60 -04 58 11.5           ~ 23 0
18 XLSSC 017 ClG 02 26 27.4 -04 59 55           ~ 9 1
19 XLSSC 020 ClG 02 26 32.8 -05 00 32           ~ 7 1
20 XLSSC 014 ClG 02 26 34.5 -04 03 55           ~ 14 0
21 JKCS 41 ClG 02 26 44.0 -04 41 36           ~ 38 0
22 RzCS 119 ClG 02 27 09.7 -04 18 05           ~ 26 1
23 XMMXCS J022726.4-043206.8 ClG 02 27 25.9 -04 32 15           ~ 26 0
24 [BPR2008] WL07 ClG 02 27 40.3 -04 51 31           ~ 29 0
25 RzCS 185 ClG 02 28 03.4 -04 51 03           ~ 24 0
26 XMMXCS J022827.3-042542.5 ClG 02 28 27.4 -04 25 48           ~ 14 0
27 XLSSC 016 ClG 02 28 28.2 -04 59 46           ~ 6 0
28 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 972 1
29 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 238 0
30 NAME NGC 5718 Group ClG 14 40 38.5 +03 28 20     14.31     ~ 100 0
31 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 662 1
32 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 364 2
33 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 473 2
34 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 255 3

    Equat.    Gal    SGal    Ecl

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2019.07.21-15:54:30

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