1999MNRAS.306..199J

Query : 1999MNRAS.306..199J

1999MNRAS.306..199J - Mon. Not. R. Astron. Soc., 306, 199-206 (1999/June-2)

Stellar population of ellipticals in different environments: near-infrared spectroscopic observations.

JAMES P.A. and MOBASHER B.

Abstract (from CDS):

Near-infrared spectra of 50 elliptical galaxies in the Pisces, Abell 2199 and 2634 clusters, and in the general field, have been obtained. The strength of the CO (2.3-µ m) absorption feature in these galaxies is used to explore the presence of an intermediate-age population (e.g. asymptotic giant branch stars) in ellipticals in different environments. We find that the strongest evidence for such a population comes from ellipticals in groups of a few members, which we interpret as the result of recent minor merging of these galaxies with later-type galaxies. Field galaxies from very isolated environments, on the other hand, show no evidence for young or intermediate-age stars as revealed by Hβ and CO absorptions, and appear to form a very uniform, old population with very little scatter in metallicity and star formation history.

Abstract Copyright: 1999 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: fundamental parameters - galaxies: stellar content - infrared: galaxies

Simbad objects: 60

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Number of rows : 60
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 NAME PSC CL ClG 00 58 25.0 +30 39 11           ~ 130 1
2 NGC 375 AG? 01 07 05.9200285896 +32 20 53.197225548   16.5       ~ 55 0
3 NGC 380 GiG 01 07 17.6009811624 +32 28 58.449364788   13.9       ~ 85 1
4 NGC 382 GiP 01 07 23.87 +32 24 13.9   14.2       ~ 105 1
5 NGC 384 GiG 01 07 25.0135015920 +32 17 33.865906848   14.3       ~ 86 1
6 NGC 386 GiG 01 07 31.3075564632 +32 21 42.936872040   15.4       ~ 57 1
7 NGC 388 GiG 01 07 47.1555983880 +32 18 35.752404816   15.5       ~ 40 1
8 NGC 410 GiG 01 10 58.9016492712 +33 09 07.053878052 13.08 12.52 11.48     ~ 155 2
9 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1299 2
10 NAME NGC 1052 Group GrG 02 41 09.3 -08 07 10           ~ 73 0
11 NGC 1600 GiG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 381 0
12 NAME NGC 1600 Group ClG 04 32 -05.0           ~ 17 0
13 NGC 2865 GiG 09 23 30.205 -23 09 41.37   12.39 11.43 11.06   ~ 240 0
14 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 644 0
15 NGC 5018 GiP 13 13 01.0452720960 -19 31 05.649751992   11.71   10.31   ~ 313 1
16 NGC 5061 Sy2 13 18 05.054 -26 50 14.00   11.18 10.41 9.66 13.59 ~ 175 0
17 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 367 1
18 NGC 6020 GiG 15 57 08.1313437552 +22 24 16.476776928   14.5       ~ 71 0
19 NGC 6051 BiC 16 04 56.6684912064 +23 55 57.622768392   14.9       ~ 112 2
20 NGC 6125 AG? 16 19 11.5344941208 +57 59 02.863041504   13.0       ~ 101 0
21 NGC 6137 BiC 16 23 03.1194649896 +37 55 20.550626868   14.1       ~ 128 1
22 Z 224-27 GiG 16 27 03.6141026064 +39 31 38.410423644   15.3       ~ 57 0
23 NGC 6158 GiG 16 27 40.8863663448 +39 22 58.834737156   15.5       ~ 64 0
24 Z 224-34 GiG 16 27 55.2471564480 +39 15 31.804648452   15.4       ~ 44 1
25 MCG+07-34-048 GiC 16 28 23.3071691088 +39 34 13.066993524   16.5       ~ 69 1
26 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 763 5
27 ACO 2199 ClG 16 28 43.31 +39 34 07.6           ~ 1171 1
28 LEDA 58301 LIN 16 28 57.2490466536 +39 42 29.878572996           ~ 31 0
29 LEDA 58309 GiC 16 28 59.7664667688 +39 41 01.905135648           ~ 30 0
30 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 168 0
31 LEDA 3084708 GiC 16 29 45.1251152784 +39 48 37.938869244           ~ 38 0
32 NGC 6577 GiG 18 12 01.2250 +21 27 48.480   14.7       ~ 29 0
33 NGC 6702 AG? 18 46 57.5835209136 +45 42 20.305242180 15.30 14.73 13.05     ~ 142 0
34 NGC 6703 AG? 18 47 18.8166660360 +45 33 02.274865812   12.29 11.34     ~ 217 0
35 ESO 462-15 AG? 20 23 13.8515900784 -27 42 52.348659840   12.92   11.37   ~ 50 0
36 IC 5157 GiG 22 03 27.0105575856 -34 56 30.842284812   13.21   11.87   ~ 41 0
37 ESO 468-13 G 22 33 44.0815844520 -27 14 44.399257512   14.34   13.71   ~ 15 0
38 4C 11.71 QSO 22 49 54.58599807 +11 36 30.8455760   14.4 13.01     ~ 176 2
39 NGC 7391 EmG 22 50 36.1354224576 -01 32 41.420188356   13.7       ~ 65 0
40 NGC 7454 GiG 23 01 06.5120307216 +16 23 18.484008792   13.6       ~ 147 0
41 NAME NGC 7448 Group GrG 23 01 48.9 +15 58 09   11.3       ~ 24 1
42 NGC 7562 GiP 23 15 57.4982037648 +06 41 15.227839176   13.0       ~ 166 0
43 NAME NGC 7619 Group GrG 23 20 32.1 +08 22 26           ~ 45 0
44 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 426 1
45 NGC 7680 GiG 23 28 35.1035177040 +32 24 56.843730720   13.5       ~ 35 0
46 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 503 2
47 2MASX J23381847+2653126 GiC 23 38 18.5024164296 +26 53 12.686595612   15.7       ~ 36 0
48 2MASX J23381860+2702066 GiC 23 38 18.6149799000 +27 02 07.211996340   17.16       ~ 28 0
49 2MASX J23382277+2709296 GiG 23 38 22.7618195304 +27 09 29.528547912   15.5       ~ 41 0
50 2MASX J23382864+2649066 GiG 23 38 28.645 +26 49 06.69   15.4       ~ 29 0
51 2MASX J23382916+2658436 GiG 23 38 29.2001539920 +26 58 43.574399580   15.3       ~ 51 0
52 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 541 4
53 LEDA 85570 GiG 23 38 29.5241654280 +27 02 05.250267636   13.9       ~ 42 1
54 2MASX J23383327+2702057 GiC 23 38 33.2598600240 +27 02 05.686017540   14.17       ~ 29 0
55 IC 5342 GiG 23 38 38.7966063288 +27 00 40.989163680   15.4       ~ 60 0
56 2MASX J23391340+2732550 GiC 23 39 13.4274780912 +27 32 54.972647808   13.39       ~ 23 0
57 2MASX J23394938+2722347 GiG 23 39 49.3836202008 +27 22 34.248932976   15.7       ~ 29 0
58 NGC 7728 BiC 23 40 00.83890 +27 08 01.3730   14.3       ~ 109 1
59 UGC 12733 GiC 23 40 46.8273584235 +26 50 07.326098544   15.896 14.792     ~ 42 0
60 NGC 7785 AG? 23 55 19.0388560224 +05 54 56.735224164   13.00       ~ 175 0

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