2006A&A...457..787S


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET03:10:40

2006A&A...457..787S - Astronomy and Astrophysics, volume 457, 787-808 (2006/10-3)

Stellar populations of early-type galaxies in different environments. I. Line-strength indices. Relations of line-strengths with σ.

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

Abstract (from CDS):

This paper commences 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. In this paper we describe the details of the galaxy sample, the observations, and the data reduction. Line-strength indices and velocity dispersions (σ) are measured in 98 early-type galaxies drawn from different environments, and the relation of the indices with the velocity dispersion analysed in detail. The present sample indicates that some of the index-σ relations depend on galaxy environment. In particular, the slope of the relation between Balmer lines and σ is steeper for galaxies in the Virgo cluster, small groups, and in the field than for galaxies in the Coma cluster. In several indices there is also a significant offset in the zero point between the relations defined by the different subsamples. The slopes of the index-σ relation for the Virgo and low-density environment galaxies are explained by a variation of both age and metallicity, with velocity dispersion, as previously noted in other studies. For the galaxies in the Coma cluster, however, the relation of the indices with σ only requires a variation of the abundance along the σ sequence. In agreement with other studies, we find that the models that better reproduce the slopes are those in which the α elements vary more than the Fe-peak elements along the σ sequence, while, at a given σ, older galaxies show an higher α/Fe ratio. The results can be explained assuming that galaxies in the Coma cluster have experienced a truncated star formation and chemical enrichment history compared to a more continuous time-extended history for their counterparts in lower density environments.

Abstract Copyright:

Journal keyword(s): galaxies: evolution - galaxies: elliptical and lenticular, cD - galaxies: stellar content

CDS comments: Table 1 objects DRCG 27-NNN are [D80] ACO 1656 NNN in Simbad.

Simbad objects: 129

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Number of rows : 129

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 2034 2
2 NAME M31 Group GrG 00 47 28.6 +40 17 23           ~ 57 0
3 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 719 2
4 LGG 18 GrG 01 10 41.2 +32 11 23           ~ 8 0
5 NGC 507 BiC 01 23 39.950 +33 15 22.22   13.0       ~ 399 3
6 LGG 26 GrG 01 27 17.2 +34 19 08           ~ 6 0
7 NGC 584 GiP 01 31 20.755 -06 52 05.02 11.93 11.44 10.48     ~ 369 2
8 NAME NGC 584 Group GrG 01 33 21.4 -07 01 17           ~ 18 0
9 NGC 636 GiG 01 39 06.529 -07 30 45.37   12.5       ~ 181 0
10 NGC 821 G 02 08 21.150 +10 59 41.53   12.210 11.310 10.739 9.744 ~ 545 0
11 LGG 103 GrG 03 43 07.8 -04 18 07           ~ 11 0
12 NGC 1453 GiG 03 46 27.269 -03 58 07.55   13   11.30   ~ 155 0
13 NGC 1600 GiG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 337 0
14 LGG 123 GrG 04 56 38 -04 44.6           ~ 5 0
15 NGC 1700 GiG 04 56 56.347 -04 51 56.64   12   11.14   ~ 333 1
16 NGC 2329 AGN 07 09 08.0060407484 +48 36 55.739351597   13.7 13.99     ~ 118 3
17 ACO 569 ClG 07 09 10.4 +48 37 10           ~ 167 1
18 NGC 2300 IG 07 32 20.486 +85 42 31.90   12.2       ~ 317 0
19 NGC 2693 GiG 08 56 59.246 +51 20 50.49 13.45 12.84 11.88     ~ 115 1
20 NGC 2694 G 08 56 59.2589823857 +51 19 55.043499519   15.5       ~ 45 0
21 LGG 168 GrG 09 06 47.0 +50 36 58           ~ 3 0
22 LGG 171 GrG 09 11 26.2 +34 56 06           ~ 4 0
23 NGC 2778 GiP 09 12 24.3746247420 +35 01 39.130438907   13.1       ~ 269 0
24 NGC 2832 BiC 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 248 3
25 ACO 779 ClG 09 19 48.0 +33 45 32           ~ 242 0
26 NGC 3115 GiG 10 05 13.978 -07 43 06.89   11   9.37   ~ 942 2
27 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 735 1
28 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1392 0
29 NAME M96 Group GrG 10 48 +13.3           ~ 283 0
30 LGG 217 GrG 10 48 34.7 +12 40 15           ~ 8 0
31 NGC 3605 GiG 11 16 46.622 +18 01 01.71   12.7       ~ 245 0
32 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 482 0
33 LGG 233 GrG 11 20 41.4 +03 15 19           ~ 8 0
34 NGC 3641 GiG 11 21 08.8116222566 +03 11 40.530887495   14.10 13.20     ~ 96 1
35 LGG 236 GrG 11 23 59.4 +38 40 42           ~ 8 0
36 LGG 237 GrG 11 24 25.6 +17 22 44           ~ 5 0
37 NGC 3665 rG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 308 1
38 NGC 3818 GiG 11 41 57.3592664401 -06 09 20.448440482   13   11.78   ~ 171 0
39 IC 767 GiG 12 11 02.7295327117 +12 06 14.387322515   14.6       ~ 50 0
40 LGG 278 GrG 12 17 45.9 +06 09 17           ~ 8 0
41 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1132 0
42 NGC 4278 LIN 12 20 06.8253868 +29 16 50.713486 11.54 11.09 10.16     ~ 895 2
43 NAME Coma I Group GrG 12 22 19.4 +29 53 47           ~ 101 0
44 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 805 0
45 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1662 2
46 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1022 1
47 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5979 0
48 NGC 4415 GiG 12 26 40.4850067522 +08 26 08.578644376   14.2       ~ 99 0
49 NGC 4431 GiP 12 27 27.3822223151 +12 17 25.034830442 14.17 13.74 12.89     ~ 150 1
50 LGG 286 GrG 12 27 59 +12 49.4           ~ 3 0
51 IC 794 GiG 12 28 08.6084194302 +12 05 35.868939739   14.07 13.44   12.39 ~ 100 1
52 NGC 4464 GiG 12 29 21.313 +08 09 23.63   13.5       ~ 219 0
53 NGC 4467 GiG 12 29 30.267 +07 59 34.62   15.2       ~ 163 0
54 NAME Vir B GrG 12 29.8 +08 00           ~ 120 0
55 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1984 2
56 NGC 4478 GiP 12 30 17.439 +12 19 42.88 12.82 12.36 11.45   10.17 ~ 474 1
57 UGCA 283 GiG 12 30 31.985 +12 29 24.85   14.5       ~ 388 0
58 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6348 3
59 NAME Virgo A Cluster ClG 12 30.8 +12 23           ~ 124 0
60 NGC 4489 GiG 12 30 52.240 +16 45 31.31   13.2       ~ 242 0
61 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 938 2
62 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 569 1
63 IC 3618 GiG 12 39 17.1236649221 +26 40 39.991093297   15.5       ~ 37 0
64 MCG+05-30-048 GiG 12 39 18.9004373332 +27 46 24.666090443   15.3       ~ 41 0
65 M 104 LIN 12 39 59.43185 -11 37 22.9954 9.51 9.55 8.00 8.05   ~ 1295 3
66 M 59 GiG 12 42 02.322 +11 38 48.95   11.0       ~ 667 0
67 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1048 1
68 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1265 0
69 NGC 4673 GiG 12 45 34.706 +27 03 38.61   13.7       ~ 80 0
70 NGC 4692 GiG 12 47 55.3114447860 +27 13 20.435601614   14.0       ~ 64 0
71 NGC 4697 GiG 12 48 35.8992791099 -05 48 02.497675635   10.97   9.83   ~ 813 0
72 MCG+05-30-094 EmG 12 49 42.2826055080 +26 53 31.215813513   14.9       ~ 50 0
73 MCG+05-30-101 GiG 12 50 54.0390607247 +27 50 30.466246871   14.8       ~ 51 0
74 LGG 307 GrG 12 51 20.6 -10 00 46           ~ 4 0
75 NGC 4742 GiG 12 51 48.0411725334 -10 27 17.200326999   12   11.55   ~ 214 1
76 LGG 314 GrG 12 53 55.1 -06 15 41           ~ 7 0
77 IC 832 LIN 12 53 59.1047721802 +26 26 38.492290193   15.0       ~ 50 0
78 LEDA 83685 GiC 12 57 22.9237221113 +27 29 34.781160016   15.3       ~ 29 0
79 NGC 4839 rG 12 57 24.353 +27 29 51.80 13.56 13.02 12.06     ~ 432 3
80 NGC 4842 G 12 57 35.8533828680 +27 29 35.687792422   14.9       ~ 76 0
81 MCG+05-31-031 LIN 12 57 36.1333456268 +27 29 05.382051188   16.30       ~ 46 1
82 IC 3957 GiC 12 59 07.5001740726 +27 46 04.044641926 16.15 15.862 14.72 14.332 13.683 ~ 105 0
83 IC 3959 GiG 12 59 08.200 +27 47 02.82 15.56 15.2 14.03 13.771 13.064 ~ 131 0
84 NGC 4864 GiG 12 59 13.129 +27 58 36.91 15.338 14.8 13.872 13.321 12.594 ~ 129 0
85 IC 3963 GiC 12 59 13.5008761088 +27 46 28.624742868 16.11 15.837 14.72 14.33 13.71 ~ 75 0
86 NGC 4867 GiG 12 59 15.2501700293 +27 58 14.617865433 15.60 15.5 14.14 13.969 13.213 ~ 118 0
87 NGC 4865 GiG 12 59 19.8715789990 +28 05 03.527652983 15.06 14.6 13.692 13.131 12.443 ~ 102 0
88 MCG+05-31-063 G 12 59 20.5 +28 03 58 21.70 15.6 19.76     ~ 8 0
89 IC 3973 G 12 59 30.8226348968 +27 53 03.169645916 15.50 15.2 14.03 13.802 13.114 ~ 99 0
90 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 730 3
91 NGC 4875 GiC 12 59 37.9094191824 +27 54 26.397642327 16.03 15.92 14.57 14.322 13.605 ~ 88 0
92 LEDA 44644 G 12 59 39.656 +27 57 14.06 16.97 16.99 15.59 15.41 14.99 ~ 67 0
93 LEDA 44651 G 12 59 40.2735305464 +27 58 05.677021012 17.47 17.375 16.02 15.812 15.153 ~ 55 0
94 GMP 3196 GiC 12 59 44.695 +27 53 23.14 18.55 18.50 17.50 17.01 16.53 ~ 21 0
95 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4317 2
96 LEDA 1821341 G 12 59 50.182 +27 54 45.49 18.60 18.68 17.49 17.07 17.0 ~ 25 0
97 2MASX J12595140+2804232 GiC 12 59 51.409 +28 04 23.29 17.87 17.71 16.62 16.251 15.573 ~ 24 0
98 2MASX J12595760+2803543 GiC 12 59 57.607 +28 03 54.32 17.97 17.914 16.91 16.55 15.891 ~ 28 0
99 NGC 4889 BiC 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 658 1
100 2MASX J13001702+2803502 GiC 13 00 17.0319036727 +28 03 50.086427150 16.89 16.855 15.52 15.321 14.643 ~ 58 0
101 IC 4026 G 13 00 22.159 +28 02 49.58 15.99 15.5 14.63 14.202 13.553 ~ 92 0
102 LEDA 126756 G 13 00 24.822 +27 55 35.84 18.50 18.52 17.33 17.129 16.499 ~ 31 0
103 LEDA 1822111 G 13 00 35.422 +27 56 33.88 18.56 18.66 17.55 17.172 16.629 ~ 28 0
104 IC 4042 AGN 13 00 42.7593522197 +27 58 16.582669061 15.44 15.272 14.01 13.713 13.025 ~ 93 0
105 2MASX J13004285+2757476 G 13 00 42.8379785026 +27 57 47.232549445 16.34 16.013 14.96 14.501 13.813 ~ 65 0
106 NGC 4908 LIN 13 00 51.581 +28 02 34.19 15.05 14.9 13.58 13.273 12.566 ~ 115 0
107 IC 4051 GiG 13 00 54.456 +28 00 27.20 15.04 14.8 13.50 13.003 12.305 ~ 202 0
108 NGC 5638 GiP 14 29 40.389 +03 14 00.39 12.57 12.14 11.20     ~ 229 2
109 LGG 386 GrG 14 39 38.0 +02 07 50           ~ 8 0
110 NGC 5796 GiP 14 59 24.115 -16 37 26.55   13   11.37   ~ 105 0
111 NGC 5812 GiP 15 00 55.708 -07 27 26.33   12   11.19   ~ 151 0
112 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 588 1
113 LGG 392 GrG 15 03 50 +01 55.6           ~ 5 0
114 NGC 5831 GiG 15 04 07.024 +01 13 11.70   13.1   11.19   ~ 281 0
115 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25   10.0       ~ 132 0
116 NGC 5845 GiG 15 06 00.787 +01 38 01.77   13.8 11.20 12.06 9.94 ~ 360 0
117 MCG+00-38-026 GiP 15 06 29.199 +01 35 41.55   14.1 13.37 13.07 12.1 ~ 108 0
118 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 786 1
119 NGC 6125 G 16 19 11.554 +57 59 02.80   13.0       ~ 88 0
120 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1114 1
121 3C 338.0 QSO 16 28 38.2447110 +39 33 04.233634   12.78 11.78     ~ 713 5
122 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 782 1
123 NGC 6411 G 17 35 32.820 +60 48 48.19   13.2       ~ 105 0
124 NGC 6482 GiG 17 51 48.8334002678 +23 04 18.884647281 12.71 12.35 11.45     ~ 192 1
125 NGC 6577 GiG 18 12 01.238 +21 27 48.64   14.7       ~ 26 0
126 NGC 6702 G 18 46 57.5820964893 +45 42 20.301418496 15.30 14.73 13.05     ~ 133 0
127 NGC 6703 G 18 47 18.8165361086 +45 33 02.284879274   12.29 11.34     ~ 209 0
128 NGC 7052 rG 21 18 33.047 +26 26 48.65 15.52 14.85 13.09     ~ 303 1
129 NGC 7332 GiP 22 37 24.522 +23 47 54.06   12.0       ~ 358 0

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2021.02.26-03:10:40

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