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 - 2026 		#notes
1 NAME PSC CL ClG 00 58 25.0 +30 39 11           ~ 131 1
2 NGC 375 AG? 01 07 05.9200285896 +32 20 53.197225548   16.5       ~ 59 0
3 NGC 380 GiG 01 07 17.6009811624 +32 28 58.449364788   13.9       ~ 87 1
4 NGC 382 GiP 01 07 23.87 +32 24 13.9   14.2       ~ 110 1
5 NGC 384 GiG 01 07 25.0135015920 +32 17 33.865906848   14.3       ~ 92 1
6 NGC 386 GiG 01 07 31.3075564632 +32 21 42.936872040   15.4       ~ 60 1
7 NGC 388 GiG 01 07 47.1555983880 +32 18 35.752404816   15.5       ~ 42 1
8 NGC 410 GiG 01 10 58.9016492712 +33 09 07.053878052 13.08 12.52 11.48     ~ 163 2
9 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
10 NAME NGC 1052 Group GrG 02 41 09.3 -08 07 10           ~ 90 0
11 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
12 NAME NGC 1600 Group ClG 04 31 39.94 -05 05 10.5           ~ 18 0
13 NGC 2865 GiG 09 23 30.205 -23 09 41.37   12.39 11.43 11.06   ~ 244 0
14 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 678 0
15 NGC 5018 GiP 13 13 01.0452720960 -19 31 05.649751992   11.71   10.31   ~ 335 1
16 NGC 5061 Sy2 13 18 05.054 -26 50 14.00   11.18 10.41 9.66 13.59 ~ 181 0
17 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 389 1
18 NGC 6020 GiG 15 57 08.1313437552 +22 24 16.476776928   14.5       ~ 77 0
19 NGC 6051 LIN 16 04 56.6684912064 +23 55 57.622768392   14.9       ~ 120 2
20 NGC 6125 AG? 16 19 11.5344941208 +57 59 02.863041504   13.0       ~ 106 0
21 NGC 6137 rG 16 23 03.1194649896 +37 55 20.550626868   14.1       ~ 130 1
22 Z 224-27 GiG 16 27 03.6141026064 +39 31 38.410423644   15.3       ~ 62 0
23 NGC 6158 GiG 16 27 40.8863663448 +39 22 58.834737156   15.5       ~ 67 0
24 Z 224-34 LIN 16 27 55.2471564480 +39 15 31.804648452   15.4       ~ 51 1
25 NGC 6166C LIN 16 28 23.3071691088 +39 34 13.066993524   16.5       ~ 77 1
26 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
27 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
28 LEDA 58301 LIN 16 28 57.2490466536 +39 42 29.878572996           ~ 33 0
29 LEDA 58309 GiC 16 28 59.7664667688 +39 41 01.905135648           ~ 34 0
30 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
31 LEDA 3084708 GiC 16 29 45.1251152784 +39 48 37.938869244           ~ 41 0
32 NGC 6577 rG 18 12 01.2299050529 +21 27 48.442466070   14.7       ~ 31 1
33 NGC 6702 AG? 18 46 57.5835209136 +45 42 20.305242180 15.30 14.73 13.05     ~ 148 0
34 NGC 6703 AG? 18 47 18.8166660360 +45 33 02.274865812   12.29 11.34     ~ 225 0
35 MCG-05-48-009 AG? 20 23 13.8515900784 -27 42 52.348659840   12.92   11.37   ~ 51 0
36 IC 5157 GiG 22 03 27.0105575856 -34 56 30.842284812   13.21   11.87   ~ 42 0
37 MCG-05-53-015 G 22 33 44.0815844520 -27 14 44.399257512   14.34   13.71   ~ 16 0
38 NGC 7385 QSO 22 49 54.58599807 +11 36 30.8455760   14.4 13.01     ~ 183 1
39 NGC 7391 EmG 22 50 36.1354224576 -01 32 41.420188356   13.7       ~ 69 0
40 NGC 7454 GiG 23 01 06.5120307216 +16 23 18.484008792   13.6       ~ 157 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       ~ 173 0
43 NAME NGC 7619 Group GrG 23 20 32.1 +08 22 26           ~ 48 0
44 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 438 1
45 NGC 7680 GiG 23 28 35.1035177040 +32 24 56.843730720   13.5       ~ 37 0
46 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
47 Z 476-85 GiC 23 38 18.5024164296 +26 53 12.686595612   15.7       ~ 38 0
48 2MASX J23381860+2702066 GiC 23 38 18.6149799000 +27 02 07.211996340   17.16       ~ 29 0
49 Z 476-86 GiG 23 38 22.7618195304 +27 09 29.528547912   15.5       ~ 43 0
50 Z 476-89 GiG 23 38 28.645 +26 49 06.69   15.4       ~ 31 0
51 Z 476-90 GiG 23 38 29.2001539920 +26 58 43.574399580   15.3       ~ 53 0
52 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 565 4
53 NGC 7720B GiG 23 38 29.5241654280 +27 02 05.250267636   13.9       ~ 43 1
54 2MASX J23383327+2702057 GiC 23 38 33.2598600240 +27 02 05.686017540   14.17       ~ 30 0
55 IC 5342 GiG 23 38 38.7966063288 +27 00 40.989163680   15.4       ~ 63 0
56 2MASX J23391340+2732550 GiC 23 39 13.4274780912 +27 32 54.972647808   13.39       ~ 25 0
57 Z 476-101 GiG 23 39 49.3836202008 +27 22 34.248932976   15.7       ~ 31 0
58 NGC 7728 rG 23 40 00.83890 +27 08 01.3730   14.3       ~ 113 1
59 Z 476-107 GiC 23 40 46.8273584235 +26 50 07.326098544   15.896 14.792     ~ 44 0
60 NGC 7785 AG? 23 55 19.0388560224 +05 54 56.735224164   13.00       ~ 179 1

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