2008MNRAS.387.1253W

Query : 2008MNRAS.387.1253W

2008MNRAS.387.1253W - Mon. Not. R. Astron. Soc., 387, 1253-1263 (2008/July-1)

The evolution of the brightest cluster galaxies since z ∼ 1 from the ESO Distant Cluster Survey (EDisCS).

WHILEY I.M., ARAGON-SALAMANCA A., DE LUCIA G., VON DER LINDEN A., BAMFORD S.P., BEST P., BREMER M.N., JABLONKA P., JOHNSON O., MILVANG-JENSEN B., NOLL S., POGGIANTI B.M., RUDNICK G., SAGLIA R., WHITE S. and ZARITSKY D.

Abstract (from CDS):

We present K-band data for the brightest cluster galaxies (BCGs) from the ESO Distant Cluster Survey (EDisCS). These data are combined with the photometry published by Aragón-Salamanca, Baugh & Kauffmann and a low-redshift comparison sample built from the BCG catalogue of von der Linden et al. BCG luminosities are measured inside a metric circular aperture with 37kpc diameter. In agreement with previous studies, we find that the K-band Hubble diagram for BCGs exhibits very low scatter (∼0.35) over a redshift range of 0 < z < 1. The colour and rest-frame K-band luminosity evolution of the BCGs are in good agreement with population synthesis models of stellar populations which formed at z > 2 and evolved passively thereafter. In contrast with some previous studies, we do not detect any significant change in the stellar mass of the BCG since z ∼ 1. These results do not seem to depend on the velocity dispersion of the parent cluster. We also find that there is a correlation between the 1D velocity dispersion of the clusters (σcl) and the K-band luminosity of the BCGs (after correcting for passive-evolution). The clusters with large velocity dispersions, and therefore masses, tend to have brighter BCGs, i.e. BCGs with larger stellar masses. This dependency, although significant, is relatively weak: the stellar mass of the BCGs changes only by ∼70 per cent over a two order of magnitude range in cluster mass. Furthermore, this dependency does not change significantly with redshift. We have compared our observational results with the hierarchical galaxy formation and evolution model predictions of De Lucia & Blaizot. We find that the models predict colours which are in reasonable agreement with the observations because the growth in stellar mass is dominated by the accretion of old stars. However, the stellar mass in the model BCGs grows by a factor of 3-4 since z = 1, a growth rate which seems to be ruled out by the observations. The models predict a dependency between the BCG's stellar mass and the velocity dispersion (mass) of the parent cluster in the same sense as the data, but the dependency is significantly stronger than observed. However, one major difficulty in this comparison is that we have measured magnitudes inside a fixed metric aperture while the models compute total luminosities.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - infrared: galaxies

Simbad objects: 91

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Number of rows : 91
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LEDA 1143141 EmG 00 16 42.5515199904 -00 26 43.566578664   16.00   14.70   ~ 11 0
2 MCG-02-02-086 rG 00 41 50.45002 -09 18 11.4633   14 13.52 12.94   ~ 154 1
3 Z 384-34 BiC 00 56 16.101 -01 15 19.77   14.40 14.45     ~ 82 1
4 2MASX J01345369-0039534 BiC 01 34 53.7207888768 -00 39 53.887528944   16.24   14.91   ~ 12 0
5 LEDA 1917424 BiC 07 58 43.1440679256 +30 46 25.550446944           ~ 6 0
6 2MASX J08225665+4529091 BiC 08 22 56.6754577968 +45 29 09.395273508           ~ 24 0
7 Z 265-35 BiC 09 46 45.425 +54 25 37.33   15.2       ~ 28 0
8 NVSS J095341+014205 rG 09 53 41.3796133224 +01 42 02.397718152           ~ 16 0
9 ClG J1018-1211 ClG 10 18 46.45 -12 11 52.8     20.35     ~ 30 0
10 EDCS J1018467-1211527 GiC 10 18 46.71 -12 11 52.7         19.682 ~ 6 1
11 MCG+08-19-026 BiC 10 25 01.5985741896 +47 50 30.737927652   17       ~ 19 0
12 EDCS J1037514-1243266 GiC 10 37 51.40 -12 43 26.6           ~ 3 1
13 EDCS J1037523-1244490 GiC 10 37 52.34 -12 44 49.0         19.787 ~ 2 0
14 ClG J1037-1243 ClG 10 37 52.6 -12 43 44           ~ 41 0
15 [MNH2008] cl J1037.9-1243a ClG 10 37.9 -12 43           ~ 10 0
16 2MASX J10390665+0512353 BiC 10 39 06.6174111192 +05 12 35.190702972           ~ 21 0
17 LEDA 3097661 BiC 10 39 19.4726721648 +02 19 18.390068400           ~ 11 0
18 EDCS J1040403-1156042 GiC 10 40 40.27 -11 56 04.2         20.859 ~ 9 1
19 ClG J1040-1155 ClG 10 40 41.6 -11 55 51           ~ 57 0
20 MCG+10-15-123 BiC 10 43 35.3090279280 +58 06 22.639615560   16       ~ 11 0
21 ClG J1054-1146 ClG 10 54 24.2 -11 46 18           ~ 54 0
22 EDCS J1054244-1146194 GiC 10 54 24.40 -11 46 19.4         20.438 ~ 8 1
23 ClG J1054-1245 ClG 10 54 43.5 -12 45 50           ~ 55 0
24 EDCS J1054435-1245519 GiC 10 54 43.54 -12 45 51.9         20.713 ~ 9 1
25 EDCS J1059071-1253153 GiC 10 59 07.14 -12 53 15.3           ~ 2 1
26 ClG J1059-1253 ClG 10 59 09.5 -12 53 15           ~ 28 0
27 ClG J1103-1246 ClG 11 03 34.9 -12 46 46           ~ 21 0
28 EDCS J1103349-1246462 GiC 11 03 34.93 -12 46 46.2         20.457 ~ 7 0
29 ClG J1103-1244 ClG 11 03 36.5 -12 44 22           ~ 18 0
30 EDCS J1103365-1244223 GiC 11 03 36.55 -12 44 22.3         20.384 ~ 8 1
31 [MNH2008] cl J1103.7-1245 ClG 11 03.7 -12 45           ~ 6 0
32 EDCS J1103434-1245341 GiC 11 03 43.40 -12 45 34.1         21.594 ~ 3 0
33 LEDA 2479429 BiC 11 14 36.4376077104 +54 45 35.610120360           ~ 5 0
34 2MASX J11223804+5918553 BiC 11 22 37.9911808104 +59 18 55.310116824           ~ 15 0
35 LEDA 1219211 BiC 11 33 20.6989525656 +02 11 56.606835372   17.538   16.052   ~ 7 0
36 Z 268-61 BiC 11 36 03.5090572752 +55 04 30.889981020   15.5       ~ 27 0
37 EDCS J1138102-1133379 GiC 11 38 10.15 -11 33 37.9         19.916 ~ 9 1
38 ClG J1138-1133 ClG 11 38 10.3 -11 33 59           ~ 46 0
39 LEDA 1280479 BiC 11 42 12.9855891072 +05 15 06.138408312           ~ 4 0
40 ClG J1202-1224 ClG 12 02 43.1 -12 24 31           ~ 26 0
41 EDCS J1202433-1224301 GiC 12 02 43.32 -12 24 30.1         19.757 ~ 6 1
42 NGC 4073 BiC 12 04 27.0598775760 +01 53 45.611893752   13.8 13.21 14.249   ~ 211 1
43 ClG J1216-1201 ClG 12 16 45.10 -12 01 17.3           ~ 71 0
44 EDCS J1216453-1201176 GiC 12 16 45.26 -12 01 17.6     22.8 20.9 20.663 ~ 10 1
45 LEDA 39445 rG 12 17 41.12563 +03 39 21.0465   14.94       ~ 26 2
46 ClG J1227-1138 ClG 12 27 53.9 -11 38 20           ~ 47 0
47 EDCS J1227589-1135135 GiC 12 27 58.89 -11 35 13.5         20.555 ~ 9 1
48 6C 122623+513250 BiC 12 28 47.3576431584 +51 15 54.943271748           ~ 16 1
49 EDCS J1232303-1250364 GiC 12 32 30.30 -12 50 36.4         19.916 ~ 7 1
50 ClG J1232-1250 ClG 12 32 30.5 -12 50 33           ~ 51 0
51 Z 15-14 BiC 12 44 57.3842480232 -00 02 35.217644568   15.6       ~ 32 0
52 NVSS J124651+001751 rG 12 46 51.2119894200 +00 17 49.280195076   15.938   14.542   ~ 28 0
53 2MASX J12472426+5459137 BiC 12 47 24.2308222608 +54 59 13.255094940           ~ 13 0
54 2MASX J12474244-0008138 BiC 12 47 42.4654663488 -00 08 14.112112920   16.62       ~ 15 0
55 EDCS J1301351-1138356 GiC 13 01 35.10 -11 38 35.6         19.285 ~ 6 0
56 ClG J1301-1138 ClG 13 01 40.1 -11 39 24           ~ 21 0
57 EDCS J1301402-1139229 GiC 13 01 40.21 -11 39 22.9         19.552 ~ 7 1
58 ClG J1301-1139 ClG 13 01.7 -11 39           ~ 15 0
59 SDSS J130706.63+554951.1 BiC 13 07 06.6348798144 +55 49 51.088827828           ~ 2 0
60 2dFGRS TGN400Z196 BiC 13 27 03.7536969024 +01 20 08.673249048   16.625   15.457   ~ 11 0
61 2dFGRS TGN401Z015 BiC 13 32 16.8207618864 +01 13 23.630759112   17.134   15.822   ~ 7 0
62 NGC 5285 BiC 13 44 25.793 +02 06 35.63   15.5       ~ 25 0
63 ClG J1353-1137 ClG 13 53 01.0 -11 37 31           ~ 27 0
64 EDCS J1353017-1137285 GiC 13 53 01.65 -11 37 28.5         19.848 ~ 6 1
65 ClG J1354-1230 ClG 13 54 09.5 -12 30 59           ~ 47 0
66 EDCS J1354098-1231015 GiC 13 54 09.80 -12 31 01.5         20.820 ~ 7 1
67 ClG J1411-1148 ClG 14 11 03.9 -11 48 22           ~ 32 0
68 EDCS J1411047-1148287 GiC 14 11 04.73 -11 48 28.7         19.608 ~ 6 1
69 ClG J1420-1236 ClG 14 20 19.4 -12 36 36           ~ 25 0
70 EDCS J1420201-1236297 GiC 14 20 20.07 -12 36 29.7         19.703 ~ 6 1
71 2MASX J15010791+4716354 BiC 15 01 07.9613832528 +47 16 35.823331272           ~ 13 0
72 2MASX J15082576-0015583 BiC 15 08 25.75868 -00 15 58.5403   16.44   14.96   ~ 26 0
73 4C 03.32 rG 15 09 59.4062815656 +03 00 11.129218956     16.5     ~ 27 1
74 MCG+08-28-020 rG 15 20 52.2446545608 +48 39 38.468569824   15       ~ 31 0
75 2MASX J15582002+2714000 BiC 15 58 20.000 +27 14 00.28   14.48       ~ 40 1
76 LEDA 1139708 BiC 16 01 13.51500 -00 35 11.5548           ~ 5 0
77 2MASX J16051568+0008167 BiC 16 05 15.6647639016 +00 08 17.120296752           ~ 9 0
78 2MASX J16123712+0022481 BiC 16 12 37.1078176800 +00 22 47.909393148           ~ 7 0
79 MCG+07-33-057 BiC 16 18 33.3266009808 +43 04 53.127478704   17       ~ 18 0
80 LEDA 1989932 BiC 16 55 47.7017456064 +32 17 23.231922972           ~ 5 0
81 2MASX J17023312+3331003 LIN 17 02 33.1453910928 +33 30 59.941378800           ~ 44 0
82 FIRST J170242.5+340337 rG 17 02 42.4914860544 +34 03 35.831926944   14.5       ~ 40 1
83 LEDA 59831 rG 17 12 28.8000059448 +64 03 38.754457596           ~ 35 1
84 FIRST J172921.2+541525 rG 17 29 21.1841324520 +54 15 26.166091500           ~ 10 0
85 LEDA 1021899 BiC 20 59 54.1052602080 -07 15 38.733501060           ~ 4 0
86 LEDA 3945436 BiC 21 33 30.4280442720 -08 38 26.785454244   16.56   15.10   ~ 7 0
87 LEDA 992019 BiC 22 07 08.3181159312 -09 21 43.787601612           ~ 4 0
88 2MASX J22233254-0904374 BiC 22 23 32.5714309872 -09 04 37.764140484   16.68   15.32   ~ 11 0
89 SDSS J222610.09-084434.9 BiC 22 26 10.0948926528 -08 44 34.929172968           ~ 4 0
90 LEDA 1148577 EmG 22 43 02.6064042840 -00 13 51.922487172   16.82   15.44   ~ 9 0
91 2MASX J23541371-1025084 LIN 23 54 13.6827414192 -10 25 08.481024912   15.32       ~ 55 2

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