2006A&A...457..809S


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.12CET02:38:42

2006A&A...457..809S - Astronomy and Astrophysics, volume 457, 809-821 (2006/10-3)

Stellar populations of early-type galaxies in different environments. II. Ages and metallicities.

SANCHEZ-BLAZQUEZ P., GORGAS J., CARDIEL N. and GONZALEZ J.J.

Abstract (from CDS):

This is the second paper of a series devoted to the study of the stellar content of early-type galaxies. The goal of the series is to set constraints on the evolutionary status of these objects We use a new set of models that include an improved stellar library (MILES) to derive simple stellar population (SSP)-equivalent parameters in a sample of 98 early-type galaxies. The sample contains galaxies in the field, poor groups, and galaxies in the Virgo and Coma clusters. We find that low-density environment galaxies span a larger range in SSP age and metallicity than their counterparts in high density environments, with a tendency for lower σ galaxies to be younger. Early-type galaxies in low-density environments appear on average ∼1.5Gyr younger and more metal rich than their counterparts in high density environments. The sample of low-density environment galaxies shows an age-metallicity relation in which younger galaxies are found to be more metal rich, but only when metallicity is measured with a Fe-sensitive index. Conversely, there is no age-metallicity relation when the metallicity is measured with a Mg sensitive index. The mass-metallicity relation is only appreciable for the low-density environment galaxies when the metallicity is measured with a Mg-sensitive index, and not when the metallicity is measured with other indicators. On the contrary, this relation exists for the high-density environment galaxies independent of the indicator used to measure the metallicity. This suggests a dependence of the mass-metallicity relation on the environment of the galaxies. Our data favour a scenario in which galaxies in low density environments have suffered a more extended star formation history than the galaxies in the Coma cluster, which appear to host more homogenous stellar populations.

Abstract Copyright:

Journal keyword(s): galaxies: abundances - galaxies: elliptical and lenticular, cD - Galaxy: stellar content - Galaxy: formation

Simbad objects: 95

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Number of rows : 95

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 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1973 2
2 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 685 2
3 NGC 507 BiC 01 23 39.950 +33 15 22.22   13.0       ~ 386 3
4 NGC 584 GiP 01 31 20.755 -06 52 05.02 11.93 11.44 10.48     ~ 359 2
5 NGC 636 GiG 01 39 06.529 -07 30 45.37   12.5       ~ 177 0
6 NGC 821 G 02 08 21.150 +10 59 41.53   12.210 11.310 10.739 9.744 ~ 528 0
7 NGC 1600 GiG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 318 0
8 NGC 1700 GiG 04 56 56.347 -04 51 56.64   12   11.14   ~ 326 1
9 NGC 2329 AGN 07 09 08.0060407484 +48 36 55.739351597   13.7 13.99     ~ 113 3
10 NGC 2300 IG 07 32 20.486 +85 42 31.90   12.2       ~ 313 0
11 NGC 2693 GiG 08 56 59.246 +51 20 50.49 13.45 12.84 11.88     ~ 111 1
12 NGC 2694 G 08 56 59.2589823857 +51 19 55.043499519   15.5       ~ 43 0
13 NGC 2778 GiP 09 12 24.3746247420 +35 01 39.130438907   13.1       ~ 259 0
14 NGC 2832 BiC 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 241 3
15 NGC 3115 GiG 10 05 13.978 -07 43 06.89   11   9.37   ~ 904 2
16 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 717 1
17 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1364 0
18 NGC 3605 GiG 11 16 46.622 +18 01 01.71   12.7       ~ 240 0
19 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 467 0
20 NGC 3641 GiG 11 21 08.8116222566 +03 11 40.530887495   14.10 13.20     ~ 93 1
21 NGC 3665 rG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 287 1
22 NGC 3818 GiG 11 41 57.3592664401 -06 09 20.448440482   13   11.78   ~ 169 0
23 IC 767 GiG 12 11 02.7295327117 +12 06 14.387322515   14.6       ~ 46 0
24 NGC 4261 LIN 12 19 23.21607184 +05 49 29.7000920   13.92 12.87     ~ 1091 0
25 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 876 2
26 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 786 0
27 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1611 2
28 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5668 0
29 NGC 4415 GiG 12 26 40.4850067522 +08 26 08.578644376   14.2       ~ 90 0
30 NGC 4431 GiP 12 27 27.3822223151 +12 17 25.034830442 14.17 13.74 12.89     ~ 143 1
31 IC 794 GiG 12 28 08.6084194302 +12 05 35.868939739   14.07 13.44   12.39 ~ 94 1
32 NGC 4464 GiG 12 29 21.313 +08 09 23.63   13.5       ~ 212 0
33 NGC 4467 GiG 12 29 30.267 +07 59 34.62   15.2       ~ 157 0
34 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1925 2
35 NGC 4478 GiP 12 30 17.439 +12 19 42.88 12.82 12.36 11.45   10.17 ~ 465 1
36 UGCA 283 GiG 12 30 31.985 +12 29 24.85   14.5       ~ 372 0
37 NGC 4489 GiG 12 30 52.240 +16 45 31.31   13.2       ~ 239 0
38 M 89 LIN 12 35 39.8 +12 33 23 11.29 10.73 9.75     ~ 908 2
39 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 552 1
40 IC 3618 GiG 12 39 17.1236649221 +26 40 39.991093297   15.5       ~ 35 0
41 MCG+05-30-048 GiG 12 39 18.9004373332 +27 46 24.666090443   15.3       ~ 39 0
42 M 104 LIN 12 39 59.43185 -11 37 22.9954 9.51 9.55 8.00 8.05   ~ 1243 3
43 M 59 GiG 12 42 02.322 +11 38 48.95   11.0       ~ 645 0
44 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1027 1
45 NGC 4673 GiG 12 45 34.706 +27 03 38.61   13.7       ~ 78 0
46 NGC 4692 GiG 12 47 55.3114447860 +27 13 20.435601614   14.0       ~ 63 0
47 NGC 4697 GiG 12 48 35.8992791100 -05 48 02.497675635   10.97   9.83   ~ 784 0
48 MCG+05-30-094 EmG 12 49 42.2826055080 +26 53 31.215813513   14.9       ~ 49 0
49 MCG+05-30-101 GiG 12 50 54.0390607248 +27 50 30.466246871   14.8       ~ 50 0
50 NGC 4742 GiG 12 51 48.0411725334 -10 27 17.200326999   12   11.55   ~ 205 1
51 IC 832 LIN 12 53 59.1047721802 +26 26 38.492290193   15.0       ~ 49 0
52 LEDA 83685 GiC 12 57 22.9237221114 +27 29 34.781160016   15.3       ~ 28 0
53 NGC 4839 rG 12 57 24.353 +27 29 51.80 13.56 13.02 12.06     ~ 416 3
54 NGC 4842 G 12 57 35.8533828680 +27 29 35.687792422   14.9       ~ 73 0
55 MCG+05-31-031 LIN 12 57 36.1333456268 +27 29 05.382051188   16.30       ~ 44 1
56 IC 3957 GiC 12 59 07.5001740726 +27 46 04.044641926 16.15 15.862 14.72 14.332 13.683 ~ 102 0
57 IC 3959 GiG 12 59 08.200 +27 47 02.82 15.56 15.2 14.03 13.771 13.064 ~ 127 0
58 NGC 4864 GiG 12 59 13.129 +27 58 36.91 15.338 14.8 13.872 13.321 12.594 ~ 126 0
59 IC 3963 GiC 12 59 13.5008761088 +27 46 28.624742868 16.11 15.837 14.72 14.33 13.71 ~ 72 0
60 NGC 4867 GiG 12 59 15.2501700293 +27 58 14.617865433 15.60 15.5 14.14 13.969 13.213 ~ 115 0
61 NGC 4865 GiG 12 59 19.8715789990 +28 05 03.527652983 15.06 14.6 13.692 13.131 12.443 ~ 99 0
62 MCG+05-31-063 G 12 59 20.5 +28 03 58 21.70 15.6 19.76     ~ 8 0
63 IC 3973 G 12 59 30.8226348968 +27 53 03.169645916 15.50 15.2 14.03 13.802 13.114 ~ 95 0
64 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 700 3
65 NGC 4875 GiC 12 59 37.9094191824 +27 54 26.397642327 16.03 15.92 14.57 14.322 13.605 ~ 86 0
66 LEDA 44644 G 12 59 39.656 +27 57 14.06 16.97 16.99 15.59 15.41 14.99 ~ 66 0
67 LEDA 44651 G 12 59 40.2735305464 +27 58 05.677021012 17.47 17.375 16.02 15.812 15.153 ~ 54 0
68 GMP 3196 GiC 12 59 44.695 +27 53 23.14 18.55 18.50 17.50 17.01 16.53 ~ 20 0
69 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4114 2
70 2MASX J12595140+2804232 GiC 12 59 51.409 +28 04 23.29 17.87 17.71 16.62 16.251 15.573 ~ 24 0
71 2MASX J12595760+2803543 GiC 12 59 57.605 +28 03 54.30 17.97 17.914 16.91 16.55 15.891 ~ 26 0
72 NGC 4889 BiC 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 629 1
73 2MASX J13001702+2803502 GiC 13 00 17.0319036727 +28 03 50.086427150 16.89 16.855 15.52 15.321 14.643 ~ 56 0
74 IC 4026 G 13 00 22.159 +28 02 49.58 15.99 15.5 14.63 14.202 13.553 ~ 91 0
75 LEDA 126756 G 13 00 24.822 +27 55 35.84 18.50 18.52 17.33 17.129 16.499 ~ 31 0
76 IC 4042 AGN 13 00 42.7593522197 +27 58 16.582669061 15.44 15.272 14.01 13.713 13.025 ~ 90 0
77 2MASX J13004285+2757476 G 13 00 42.8379785026 +27 57 47.232549445 16.34 16.013 14.96 14.501 13.813 ~ 64 0
78 NGC 4908 LIN 13 00 51.581 +28 02 34.19 15.05 14.9 13.58 13.273 12.566 ~ 113 0
79 IC 4051 GiG 13 00 54.456 +28 00 27.20 15.04 14.8 13.50 13.003 12.305 ~ 196 0
80 NGC 5638 GiP 14 29 40.389 +03 14 00.39 12.57 12.14 11.20     ~ 224 2
81 NGC 5796 GiP 14 59 24.115 -16 37 26.55   13   11.37   ~ 102 0
82 NGC 5812 GiP 15 00 55.708 -07 27 26.33   12   11.19   ~ 148 0
83 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 566 1
84 NGC 5831 GiG 15 04 07.024 +01 13 11.70   13.1   11.19   ~ 277 0
85 NGC 5845 GiG 15 06 00.787 +01 38 01.77   13.8 11.20 12.06 9.94 ~ 346 0
86 MCG+00-38-026 GiP 15 06 29.199 +01 35 41.55   14.1 13.37 13.07 12.1 ~ 105 0
87 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 755 1
88 NGC 6125 G 16 19 11.554 +57 59 02.80   13.0       ~ 83 0
89 3C 338.0 QSO 16 28 38.2443686587 +39 33 04.231770853   12.78 11.78     ~ 690 5
90 NGC 6411 G 17 35 32.820 +60 48 48.19   13.2       ~ 100 0
91 NGC 6482 GiG 17 51 48.8334002678 +23 04 18.884647281 12.71 12.35 11.45     ~ 185 1
92 NGC 6577 GiG 18 12 01.238 +21 27 48.64   14.7       ~ 25 0
93 NGC 6702 G 18 46 57.5820964893 +45 42 20.301418496 15.30 14.73 13.05     ~ 131 0
94 NGC 6703 G 18 47 18.8165361086 +45 33 02.284879274   12.29 11.34     ~ 200 0
95 NGC 7052 rG 21 18 33.047 +26 26 48.65 15.52 14.85 13.09     ~ 290 1

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2019.12.12-02:38:42

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