2004ApJ...613..262L

Query : 2004ApJ...613..262L

2004ApJ...613..262L - Astrophys. J., 613, 262-278 (2004/September-3)

The colors of dwarf elliptical galaxy globular cluster systems, nuclei, and stellar halos.

LOTZ J.M., MILLER B.W. and FERGUSON H.C.

Abstract (from CDS):

We present the results of a Hubble Space Telescope WFPC2 F555W and F814W survey of 69 dwarf elliptical galaxies (dEs) in the Virgo and Fornax Clusters and Leo Group. The V-I colors of the dE globular clusters, nuclei, and underlying field-star populations are used to trace the dE star formation histories. We find that the dE globular cluster candidates are as blue as the metal-poor globular clusters of the Milky Way. The observed correlation of the dE globular cluster systems' V-I color with the luminosity of the host dE is strong evidence that the globular clusters were formed within the halos of dEs and do not have a pregalactic origin. Assuming that the majority of dE clusters are old, the mean globular cluster color-host galaxy luminosity correlation implies a cluster metallicity-galaxy luminosity relation of <ZGC>∝L0.22±0.05B, which is significantly shallower than the field-star metallicity-host galaxy luminosity relationship observed in Local Group dwarfs (<ZFS>∝L0.4). The dE stellar envelopes are 0.1-0.2 mag redder in V-I than their globular clusters and nuclei. This color offset implies separate star formation episodes within the dEs for the clusters and field stars, while the very blue colors of two dE nuclei trace a third star formation event in those dEs less than 1 Gyr ago.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: Individual: Name: Fornax - Galaxies: Clusters: Individual: Name: Leo - Galaxies: Clusters: Individual: Name: Virgo - Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Nuclei - Galaxies: Star Clusters - Galaxies: Stellar Content

Simbad objects: 80

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Number of rows : 80
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 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 687 1
2 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 800 1
3 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1308 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12645 1
5 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1743 1
6 LEDA 74372 LSB 03 23 33.6 -36 58 58   17.7       ~ 16 0
7 LEDA 74383 GiC 03 23 55.8 -34 48 26   19.3       ~ 7 0
8 2MASX J03262503-3707417 GiC 03 26 25.0085720520 -37 07 41.543028444   16.09       ~ 39 0
9 LEDA 74435 GiC 03 26 42.56 -34 32 50.0   17.1       ~ 18 0
10 LEDA 74487 GiC 03 27 47.7 -33 33 53   19.4       ~ 13 0
11 LEDA 74503 GiC 03 27 59.0 -38 32 14   17.5       ~ 9 0
12 ESO 358-14 LSB 03 32 57.4 -35 44 15   17.95   16.69   ~ 27 0
13 MCG-06-08-027 EmG 03 34 29.4927803424 -35 32 47.329271916   14.50       ~ 87 1
14 LEDA 74745 LSB 03 35 00.2 -35 19 21   19.2 19.26     ~ 20 0
15 LEDA 74749 LSB 03 35 11.5 -35 19 22   19.5       ~ 19 0
16 2MASX J03352407-3621496 GiC 03 35 24.0910651464 -36 21 49.743672768   15.90       ~ 37 0
17 LEDA 74777 GiC 03 36 45.47 -33 00 48.8   16.23       ~ 18 0
18 LEDA 74786 GiC 03 37 08.2 -34 43 52   18.8       ~ 18 0
19 LEDA 74810 LSB 03 38 20.9 -36 24 45   17.6       ~ 18 0
20 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1827 0
21 LEDA 74821 LSB 03 38 45.336 -35 15 59.93   18.5       ~ 21 0
22 LEDA 74869 LSB 03 40 17.2 -36 32 05   18.7       ~ 20 0
23 LEDA 74872 LSB 03 40 20.5 -37 38 39   17.8       ~ 16 0
24 LEDA 74882 LSB 03 40 37.7 -36 07 16   19.1       ~ 20 0
25 LEDA 74899 LSB 03 41 00.77 -35 44 31.1   17.6       ~ 33 0
26 LEDA 74982 GiC 03 45 30.9 -34 30 20   18.8       ~ 16 0
27 LEDA 74993 GiP 03 47 01.52 -36 26 14.9   16.3       ~ 28 0
28 ESO 358-66 GiC 03 47 52.669 -36 28 18.07   15.65   14.24   ~ 48 0
29 NAME NGC 3115 DW1 GiG 10 05 41.5916660712 -07 58 53.587291224   14.32 13.45     ~ 88 1
30 NAME M96 Group GrG 10 48 +13.3           ~ 314 0
31 UGC 5944 LSB 10 50 18.960 +13 16 18.69   15.7       ~ 33 0
32 LEDA 83364 GiG 10 51 01.500 +13 20 00.52   17.0       ~ 18 0
33 IC 3019 GiG 12 09 22.257 +13 59 32.73   15.0       ~ 110 0
34 LEDA 39112 AG? 12 14 36.811 +09 41 24.33   16       ~ 22 0
35 UGCA 275 G 12 14 59.677 +09 33 54.51   18       ~ 26 1
36 UGC 7269 AG? 12 15 40.0915388520 +15 00 19.781490924   16.25       ~ 26 0
37 LEDA 39427 G 12 17 31.257 +14 21 20.82   20       ~ 15 0
38 IC 3192 AG? 12 21 04.806 +11 45 16.55   16       ~ 38 0
39 LEDA 39994 LSB 12 21 50.324 +08 32 30.33   18       ~ 24 0
40 LEDA 40046 AG? 12 22 08.587 +09 53 39.84   21       ~ 18 0
41 UGC 7436 GiP 12 22 19.530 +14 45 38.11   15.2       ~ 131 0
42 LEDA 40074 GiG 12 22 21.677 +10 36 10.81   16       ~ 30 0
43 LEDA 40235 GiC 12 23 31.78416 +17 47 40.1460   17.55       ~ 19 0
44 LEDA 40424 AG? 12 24 47.7712423325 +08 59 29.119974220   19       ~ 21 0
45 MCG+02-32-045 GiC 12 26 05.643 +12 33 34.64   17 14.59   13.61 ~ 39 0
46 LEDA 40679 GiC 12 26 22.6098 +12 47 11.020   21 17.18   16.40 ~ 32 0
47 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6643 0
48 IC 3344 GiG 12 26 32.3896963032 +13 34 43.544246304   15.2       ~ 64 0
49 IC 3349 GiG 12 26 47.0630055600 +12 27 14.345391348   15.3 13.98   12.95 ~ 84 0
50 LEDA 40759 AG? 12 26 54.552 +10 39 57.09   16       ~ 36 0
51 IC 3363 GiG 12 27 03.303 +12 33 37.70   15.31 14.54   13.45 ~ 59 1
52 LEDA 40834 G 12 27 18.685 +08 12 46.38   16       ~ 26 0
53 LEDA 40838 GiG 12 27 21.063 +13 06 41.59   21 17.39   16.69 ~ 21 0
54 IC 794 GiG 12 28 08.6096744256 +12 05 35.874205512   14.07 13.44   12.39 ~ 113 1
55 LEDA 40966 GiG 12 28 10.273 +12 48 32.12   17.63 18.79   17.88 ~ 15 0
56 LEDA 41019 LSB 12 28 27.461 +14 09 19.40   18       ~ 19 0
57 LEDA 41027 AG? 12 28 30.4812945888 +07 19 29.065774836   16.59 15.79     ~ 27 0
58 LEDA 41259 LSB 12 30 02.00 +09 28 26.4   17.31       ~ 17 0
59 2MASX J12300506+0804241 G 12 30 05.0700348600 +08 04 23.971869048   16.82 15.13     ~ 76 0
60 LEDA 41286 LSB 12 30 16.017 +13 18 27.13           ~ 19 0
61 IC 3437 GiC 12 30 45.9003093456 +11 20 35.375795700   15.5       ~ 54 0
62 LEDA 41356 AG? 12 30 47.2877058192 +07 36 19.539363456   16       ~ 24 0
63 LEDA 41447 GiC 12 31 27.513 +10 56 08.80           ~ 14 0
64 IC 3457 GiG 12 31 51.3438999336 +12 39 25.148930292   14.69 14.56   13.58 ~ 92 1
65 UGC 7707 AG? 12 33 18.463 +17 27 33.68   17       ~ 20 0
66 LEDA 41726 G 12 33 37.7 +07 52 21   15.93       ~ 31 0
67 LEDA 41761 LSB 12 33 55.6924973856 +05 43 07.563609048           ~ 17 0
68 IC 3519 AG? 12 34 38.400 +15 36 09.59   16       ~ 39 1
69 LEDA 42016 G 12 36 07.193 +06 03 14.32   20       ~ 15 0
70 LEDA 42141 LSB 12 37 24.9379650816 +14 18 45.292902120   19       ~ 14 0
71 LEDA 42172 GiC 12 37 46.6 +10 59 00   18.65     16.6 ~ 17 0
72 LEDA 42248 AG? 12 38 32.170 +10 22 35.50   17       ~ 28 0
73 LEDA 42318 AG? 12 39 11.713 +08 04 20.78   20       ~ 16 0
74 IC 3658 LSB 12 41 20.6339756904 +14 42 02.014377660   15.5       ~ 45 0
75 LEDA 42563 G 12 41 23.95 +08 21 56.7   19       ~ 10 0
76 IC 3693 GiG 12 42 58.034 +10 40 54.93   15.4       ~ 60 0
77 IC 3720 GiC 12 44 46.522 +12 04 00.81   16.0     14.1 ~ 46 0
78 LEDA 43019 AG? 12 45 40.24 +09 24 22.7   19       ~ 20 0
79 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2187 2
80 NAME Local Group GrG ~ ~           ~ 8389 0

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