2011MNRAS.413..921V

Query : 2011MNRAS.413..921V

2011MNRAS.413..921V - Mon. Not. R. Astron. Soc., 413, 921-941 (2011/May-2)

The evolution of early-type galaxies in clusters from z∼ 0.8 to z ∼ 0: the ellipticity distribution and the morphological mix.

VULCANI B., POGGIANTI B.M., DRESSLER A., FASANO G., VALENTINUZZI T., COUCH W., MORETTI A., SIMARD L., DESAI V., BETTONI D., D'ONOFRIO M., CAVA A. and VARELA J.

Abstract (from CDS):

We present the ellipticity distribution and its evolution for early-type galaxies in clusters from z∼ 0.8 to the current epoch, based on the WIde-field Nearby Galaxy-cluster Survey (0.04 ≤ z ≤ 0.07) and the ESO Distant Cluster Survey (0.4 ≤ z ≤ 0.8). We first investigate a mass-limited sample and we find that above a fixed mass limit (M* ≥ 1010.2 M☉), the ellipticity (ε) distribution of early-type galaxies notably evolves with redshift. In the local Universe, there are proportionally more galaxies with higher ellipticity, hence flatter, than in distant clusters. This evolution is due partly to the change in the mass distribution and mainly to the change in the morphological mix with z among the early types, the fraction of ellipticals goes from ∼70 per cent at high z to ∼40 per cent at low z). Analysing separately the ellipticity distribution of the different morphological types, we find no evolution both for ellipticals and for S0s. However, for ellipticals a change with redshift in the median value of the distributions is detected. This is due to a larger population of very round (ε < 0.05) elliptical galaxies at low z. In order to compare our finding to previous studies, we also assemble a magnitude-`delimited' sample that consists of early-type galaxies on the red sequence with -19.3 > MB+ 1.208z > -21. Analysing this sample, we do not recover exactly the same results as the mass-limited sample. This indicates that the selection criteria are crucial to characterize the galactic properties: the choice of the magnitude-`delimited' sample implies the loss of many less-massive galaxies and so it biases the final conclusions. Moreover, although we are adopting the same selection criteria, our results in the magnitude-`delimited' sample are also not in agreement with those of Holden et al. This is due to the fact that our and their low-zsamples have a different magnitude distribution because the Holden et al. sample suffers from incompleteness at faint magnitudes.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

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

Simbad objects: 87

goto Full paper

goto View the references in ADS

Number of rows : 87
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 2717 ClG 00 03 12.9 -35 56 13           ~ 136 0
2 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 142 0
3 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 909 0
4 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 555 2
5 BAX 014.7298+26.9591 ClG 00 58 54.2 +26 57 03           ~ 25 0
6 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 368 1
7 ACO 147 ClG 01 08 10 +02 10.0           ~ 112 0
8 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 189 1
9 ACO 160 ClG 01 12 59.98 +15 30 05.3           ~ 172 0
10 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 361 2
11 ACO 193 ClG 01 25 07.3 +08 41 36           ~ 186 0
12 ACO 311 ClG 02 09 10 +19 43.2           ~ 45 0
13 ACO 376 ClG 02 45 48 +36 51.6           B8.5 153 1
14 ACO 3128 ClG 03 29 50.6 -52 34 48           ~ 176 3
15 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 304 0
16 ACO 3164 ClG 03 46 16.8 -57 02 11           ~ 44 0
17 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 410 0
18 ACO 500 ClG 04 38 55.0 -22 05 55           ~ 81 0
19 [FMV2006] A548b ClG 05 45 28 -25 55.0           ~ 6 0
20 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 305 0
21 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 209 0
22 ZwCl 0712+5334 ClG 07 16 42.6 +53 24 28           ~ 28 0
23 ACO 602 ClG 07 53 23.51 +29 20 20.3           ~ 77 0
24 ACO 671 ClG 08 28 48.68 +30 27 07.0           ~ 164 0
25 ACO 754 ClG 09 09 08.4 -09 39 58           ~ 666 1
26 ACO 780 ClG 09 18 30 -12 15.7           ~ 453 0
27 ZwCl 0959+3257 ClG 10 02 42.16 +32 43 37.2           ~ 36 0
28 [FMV2006] A957x ClG 10 13 57.33 -00 54 54.4           ~ 9 0
29 ACO 970 ClG 10 17 34.3 -10 42 01           ~ 85 0
30 BAX 155.5304+38.5153 ClG 10 22 18.24 +38 32 39.6           ~ 54 0
31 ClG J1037-1243 ClG 10 37 52.6 -12 43 44           ~ 40 0
32 ACO 1069 ClG 10 39 54.3 -08 36 40           ~ 108 1
33 ClG J1040-1155 ClG 10 40 41.6 -11 55 51           ~ 56 0
34 ClG J1054-1146 ClG 10 54 24.2 -11 46 18           ~ 53 0
35 ClG J1054-1245 ClG 10 54 43.5 -12 45 50           ~ 55 0
36 ClG J1103-1245 ClG 11 03 42.9 -12 45 18           ~ 16 1
37 ACO 1291 ClG 11 32 11.20 +56 01 31.3           ~ 132 0
38 ClG J1138-1133 ClG 11 38 10.3 -11 33 59           ~ 46 0
39 ACO 3490 ClG 11 45 19.6 -34 25 59           ~ 47 1
40 ACO 3497 ClG 12 00 03 -31 23.7           ~ 35 0
41 ClG J1216-1201 ClG 12 16 45.10 -12 01 17.3           ~ 68 0
42 ClG J1227-1138 ClG 12 27 53.9 -11 38 20           ~ 47 0
43 ClG J1232-1250 ClG 12 32 30.5 -12 50 33           ~ 51 0
44 [FMV2006] A1631a ClG 12 52 52 -15 24.0           ~ 15 0
45 [FMV2006] A3528b ClG 12 54 00 -28 51.0           ~ 4 0
46 [FMV2006] A3528a ClG 12 54 35 -29 23.0           ~ 5 0
47 ACO 3530 ClG 12 55 36.0 -30 20 49           ~ 97 0
48 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 366 1
49 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 168 2
50 ACO 1668 ClG 13 04 00.60 +19 17 09.6           ~ 117 0
51 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 150 0
52 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 249 2
53 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 442 2
54 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 133 1
55 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 314 1
56 ACO 1795 ClG 13 48 50.48 +26 35 07.4           ~ 1267 0
57 ClG J1354-1230 ClG 13 54 09.5 -12 30 59           ~ 47 0
58 ACO 1831 ClG 13 59 19.42 +27 58 08.2           ~ 154 0
59 ACO 1983 ClG 14 52 59.33 +16 46 11.0           ~ 242 1
60 ACO 1991 ClG 14 54 41.53 +18 38 08.4           ~ 330 1
61 ACT-CL J1521.8+0742 ClG 15 21 55.14 +07 41 27.2     15.13     ~ 311 0
62 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 253 0
63 ACO 2122 ClG 15 44 55.93 +36 06 05.2           ~ 229 0
64 ACO 2149 ClG 16 00 53.08 +53 56 57.6           ~ 75 0
65 ACO 2169 ClG 16 13 59.22 +49 07 07.2           ~ 62 0
66 ACO 2256 ClG 17 03 09.4 +78 39 36           ~ 885 1
67 ACO 2271 ClG 17 17 17.5 +78 01 00           ~ 69 0
68 BAX 265.1346+35.6492 ClG 17 40 32.7 +35 38 51           ~ 33 0
69 ZwCl 1810+4949 ClG 18 11 00.1 +49 54 40     14.8     ~ 55 0
70 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 627 1
71 ACO 3716 ClG 20 51 16.7 -52 41 43           ~ 115 1
72 ZW II 108 BiC 21 13 55.918 +02 33 55.39   15.1       ~ 62 1
73 ACO 3809 ClG 21 46 57.5 -43 54 06           ~ 89 0
74 ACO 2382 ClG 21 51 57.2984 -15 36 48.067           ~ 118 0
75 ACO 2399 ClG 21 57 19.01 -07 50 57.5           ~ 185 0
76 ACO 2415 ClG 22 05 25.0 -05 35 23           ~ 115 1
77 ACO 3880 ClG 22 27 49.5 -30 34 40           ~ 95 2
78 ACO 2457 ClG 22 35 40.30 +01 31 33.6           ~ 132 0
79 ZwCl 2307+0713 ClG 23 10 26.6 +07 35 13           ~ 55 0
80 [FMV2006] A2572a ClG 23 17 13 +18 42.0           ~ 10 0
81 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 316 1
82 ACO 2593 ClG 23 24 27.15 +14 33 40.2           ~ 218 0
83 ACO 2622 ClG 23 34 53 +27 25.6           ~ 91 0
84 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 247 0
85 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 269 3
86 ACO 2665 ClG 23 50 50.6 +06 09 00           ~ 99 0
87 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 380 1

To bookmark this query, right click on this link: simbad:objects in 2011MNRAS.413..921V and select 'bookmark this link' or equivalent in the popup menu