2005A&A...429..101S


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.14CET19:09:10

2005A&A...429..101S - Astronomy and Astrophysics, volume 429, 101-114 (2005/1-1)

The intermediate-redshift galaxy cluster CL 0048-2942. Stellar populations.

SEROTE ROOS M., LOBO C., DURRET F., IOVINO A. and MARQUEZ I.

Abstract (from CDS):

We present a detailed study of the cluster CL 0048-2942, located at z ∼0.64, based on a photometric and spectroscopic catalogue of 54 galaxies in a 5x5arcmin2 region centred in that cluster. Of these, 23 galaxies were found to belong to the cluster. Based on this sample, the line-of-sight velocity dispersion of the cluster is approximately 680±140km/s. We have performed stellar population synthesis in the cluster members as well as in the field galaxies of the sample and found that there are population gradients in the cluster with central galaxies hosting mainly intermediate/old populations whereas galaxies in the cluster outskirts show clearly an increase of younger populations, meaning that star formation is predominantly taking place in the outer regions of the cluster. In a general way, field galaxies seem to host less evolved stellar populations than cluster members. In fact, in terms of ages, young supergiant stars dominate the spectra of field galaxies whereas cluster galaxies display a dominant number of old and intermediate age stars. Following the work of other authors (e.g. Dressler et al., 1999ApJS..122...51D) we have estimated the percentage of K+A galaxies in our sample and found around 13% in the cluster and 10% in the field. These values were estimated through means of a new method, based on stellar population synthesis results, that takes into account all possible absorption features in the spectrum and thus makes optimal use of the data.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: CL 0048-2942 - galaxies: clusters: general - galaxies: distances and redshifts - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/A+A/429/101): table2.dat table4.dat table56.dat table8.dat>

Nomenclature: Table 2: [SLD2005] NNN N=54 among (Nos 35-908).

Simbad objects: 62

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Number of rows : 62

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ClG 0021+0406 ClG 00 23 52 +04 23.1           ~ 46 0
2 [SLD2005] 265 GiC 00 48 20.162 -29 42 31.01           ~ 1 0
3 [OZB2005] EIS J0048-2942 8 GiC 00 48 20.724 -29 42 44.52         19.80 ~ 2 0
4 [SLD2005] 449 GiC 00 48 21.537 -29 39 33.32           ~ 1 0
5 [SLD2005] 452 GiC 00 48 21.908 -29 39 35.97           ~ 1 0
6 [SLD2005] 212 GiC 00 48 21.910 -29 41 55.06           ~ 1 0
7 [SLD2005] 58 GiC 00 48 21.954 -29 40 09.29           ~ 1 0
8 [OZB2005] EIS J0048-2942 12 GiC 00 48 22.022 -29 44 18.39         20.50 ~ 2 0
9 [SLD2005] 451 GiC 00 48 22.202 -29 39 36.44           ~ 1 0
10 [SLD2005] 121 GiC 00 48 22.333 -29 41 00.64           ~ 1 0
11 [SLD2005] 196 GiC 00 48 23.879 -29 41 52.75           ~ 1 0
12 [SLD2005] 44 GiC 00 48 24.402 -29 39 53.51           ~ 1 0
13 [OZB2005] EIS J0048-2942 9 GiC 00 48 24.672 -29 42 55.49         21.39 ~ 2 0
14 [SLD2005] 266 GiC 00 48 26.044 -29 42 31.30           ~ 1 0
15 [SLD2005] 231 GiC 00 48 26.213 -29 42 17.65           ~ 1 0
16 [SLD2005] 188 GiC 00 48 26.940 -29 41 49.71           ~ 1 0
17 [SLD2005] 161 GiC 00 48 27.885 -29 41 34.86           ~ 1 0
18 [SLD2005] 35 GiC 00 48 28.144 -29 39 48.40           ~ 1 0
19 [SLD2005] 443 GiC 00 48 28.492 -29 39 29.77           ~ 1 0
20 [OZB2005] EIS J0048-2942 77 GiC 00 48 29.390 -29 40 51.45         20.70 ~ 2 0
21 [OZB2005] EIS J0048-2942 35 GiC 00 48 30.075 -29 42 11.00         21.09 ~ 2 0
22 [OZB2005] EIS J0048-2942 48 GiC 00 48 30.828 -29 43 16.58         19.98 ~ 2 0
23 [SLD2005] 235 GiC 00 48 30.934 -29 42 08.88           ~ 1 0
24 [OZB2005] EIS J0048-2942 56 GiC 00 48 31.379 -29 43 45.19         21.20 ~ 2 0
25 [SLD2005] 907 GiC 00 48 31.404 -29 42 07.67           ~ 1 0
26 NVSS J004831-294207 rG 00 48 31.423 -29 42 10.19         19.31 ~ 3 0
27 ClG J0048-2942 ClG 00 48 31.6 -29 42 25           ~ 12 0
28 [SLD2005] 216 GiC 00 48 32.097 -29 42 07.14           ~ 1 0
29 [SLD2005] 189 GiC 00 48 32.270 -29 41 50.52           ~ 1 0
30 [OZB2005] EIS J0048-2942 29 GiC 00 48 32.725 -29 42 04.07         21.13 ~ 2 0
31 [OZB2005] EIS J0048-2942 63 GiC 00 48 33.234 -29 44 24.83         21.08 ~ 2 0
32 [SLD2005] 37 GiC 00 48 34.210 -29 39 51.21           ~ 1 0
33 [OZB2005] EIS J0048-2942 60 GiC 00 48 35.362 -29 44 17.75         20.82 ~ 2 0
34 [SLD2005] 244 GiC 00 48 35.483 -29 42 23.98           ~ 1 0
35 [SLD2005] 245 GiC 00 48 35.760 -29 42 26.10           ~ 1 0
36 [OZB2005] EIS J0048-2942 42 GiC 00 48 35.790 -29 42 43.79         21.06 ~ 2 0
37 [SLD2005] 184 GiC 00 48 35.836 -29 41 50.42           ~ 1 0
38 [OZB2005] EIS J0048-2942 76 GiC 00 48 36.953 -29 40 51.86         20.94 ~ 2 0
39 [OZB2005] EIS J0048-2942 59 GiC 00 48 37.741 -29 44 00.29         20.84 ~ 2 0
40 [OZB2005] EIS J0048-2942 47 GiC 00 48 38.134 -29 43 08.27         20.84 ~ 2 0
41 [OZB2005] EIS J0048-2942 58 GiC 00 48 38.531 -29 43 54.94         20.37 ~ 2 0
42 [OZB2005] EIS J0048-2942 57 GiC 00 48 39.315 -29 43 52.93         20.34 ~ 2 0
43 [OZB2005] EIS J0048-2942 38 GiC 00 48 39.410 -29 42 26.97         19.92 ~ 2 0
44 [OZB2005] EIS J0048-2942 73 GiC 00 48 40.976 -29 40 27.01         20.55 ~ 2 0
45 [OZB2005] EIS J0048-2942 27 GiC 00 48 41.254 -29 41 59.87         20.50 ~ 2 0
46 [OZB2005] EIS J0048-2942 51 GiC 00 48 41.553 -29 43 23.70         20.63 ~ 2 0
47 [SLD2005] 908 GiC 00 48 41.564 -29 39 06.40           ~ 1 0
48 [SLD2005] 400 GiC 00 48 41.942 -29 43 55.86           ~ 1 0
49 [SLD2005] 906 GiC 00 48 42.497 -29 44 57.53           ~ 1 0
50 [SLD2005] 296 GiC 00 48 42.518 -29 42 55.58           ~ 1 0
51 [SLD2005] 439 GiC 00 48 42.702 -29 44 29.34           ~ 1 0
52 [SLD2005] 424 GiC 00 48 42.717 -29 44 21.03           ~ 1 0
53 [SLD2005] 199 GiC 00 48 43.198 -29 41 59.92           ~ 1 0
54 [SLD2005] 901 GiC 00 48 43.774 -29 44 52.00           ~ 1 0
55 [OZB2005] EIS J0048-2942 74 GiC 00 48 44.169 -29 40 45.16         20.00 ~ 2 0
56 [SLD2005] 902 GiC 00 48 46.147 -29 42 14.80           ~ 1 0
57 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 239 3
58 3C 184 rG 07 39 24.40 +70 23 10.0   21.5       ~ 132 1
59 ClG J0849+4452 ClG 08 48 56.3 +44 52 16           ~ 101 1
60 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 448 0
61 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 190 0
62 ClG 1603+4313 ClG 16 04 23.7 +43 04 52           ~ 125 1

    Equat.    Gal    SGal    Ecl

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2019.12.14-19:09:10

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