1999AJ....118.1526G


Query : 1999AJ....118.1526G

1999AJ....118.1526G - Astron. J., 118, 1526-1541 (1999/October-0)

Globular cluster systems. I. V-I color distributions.

GEBHARDT K. and KISSLER-PATIG M.

Abstract (from CDS):

We have compiled data for the globular cluster systems of 50 galaxies from the Hubble Space Telescope Wide Field Planetary Camera 2 archive, of which 43 are type S0 or earlier. In this paper, we present the data set and derive the V-I color distributions. We derive the first four moments of the color distributions, as well as a measure for their nonunimodality. The number of globular clusters in each galaxy ranges from 18 (in NGC 2778) to 781 (NGC 5846). For those systems having more than 100 clusters, seven of 16 (44%) show significant bimodality. Overall, roughly half of all the systems in our sample show hints of a bimodal color distribution. In general, the distributions of the faint galaxies are consistent with unimodality, whereas those of the brighter galaxies are not. We also find a number of systems with narrow color distributions–with both mean red and blue colors–suggesting that systems exist with only metal-rich or only metal-poor globular clusters. We discuss their possible origins. In comparing the moments of the V-I distributions with various galaxy properties for the early-type galaxies, we find the following difference in the correlations between the field and cluster galaxy populations: the peak V-I color of the globular cluster distribution correlates well with the central velocity dispersion–and hence the Mg2 index and total luminosity–for galaxies in cluster environments; there exists no such correlation for field galaxies. This difference between cluster and field galaxies possibly reflects different formation scenarios for their globular cluster systems. Among the explanations for such a correlation, we consider either a larger age spread in the field populations or the possibility that cluster galaxies are always affected by significant accretion whereas some field galaxies could host pure ``in situ'' formed populations.

Abstract Copyright:

Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: Star Clusters

Simbad objects: 54

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Number of rows : 54
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 584 GiP 01 31 20.7231919800 -06 52 04.770287472 11.93 11.44 10.48     ~ 382 2
2 NGC 596 GiG 01 32 51.9046959816 -07 01 53.646821220   11.5       ~ 231 0
3 NGC 821 G 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 556 0
4 NGC 1023 IG 02 40 24.0133575864 +39 03 47.663392896 10.91 10.35 9.35 7.83   ~ 631 2
5 NGC 1316 GiP 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1288 1
6 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1514 1
7 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1694 0
8 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 711 1
9 NGC 1426 GiG 03 42 49.0997091480 -22 06 30.173615028   12.21 11.44 10.90   ~ 189 0
10 NGC 1700 GiG 04 56 56.3160873072 -04 51 56.794713228   12   11.14   ~ 339 1
11 NGC 2300 IG 07 32 20.486 +85 42 31.90   12.2       ~ 326 0
12 NGC 2434 GiG 07 34 51.1504542360 -69 17 02.996020032 12.82 12.50 11.26 10.84   ~ 181 1
13 NGC 2778 GiP 09 12 24.3741783168 +35 01 39.140496840   13.1       ~ 273 0
14 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 972 2
15 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 750 1
16 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1422 0
17 NAME M96 Group GrG 10 48 +13.3           ~ 296 0
18 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 569 1
19 NGC 3585 GiG 11 13 17.109 -26 45 17.96   10.64   9.22   ~ 271 0
20 NGC 3610 GiG 11 18 25.2827189856 +58 47 10.433735988   11.4       ~ 295 0
21 NGC 3640 GiG 11 21 06.852 +03 14 05.15 11.89 11.36 10.44     ~ 264 3
22 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 411 2
23 M 98 LIN 12 13 48.2910686976 +14 54 01.953475200 11.25 10.95 10.14     ~ 462 1
24 NGC 4291 GiG 12 20 17.699 +75 22 15.47   17.0       ~ 290 1
25 NGC 4343 AGN 12 23 38.6916756216 +06 57 14.481212688   13.5       ~ 164 1
26 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 820 0
27 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1699 2
28 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1048 1
29 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6271 0
30 NGC 4450 LIN 12 28 29.5910654016 +17 05 05.976112020   10.90 10.08     ~ 533 2
31 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 402 2
32 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 2026 2
33 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 623 1
34 NGC 4478 GiP 12 30 17.4160005576 +12 19 42.790577160 12.82 12.36 11.45   10.17 ~ 481 1
35 UGCA 283 GiG 12 30 31.985 +12 29 24.85   14.5       ~ 399 0
36 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6684 3
37 IRAS 12315+0758 GiG 12 34 03.029 +07 41 56.90   10.6       ~ 634 0
38 NGC 4536 GiP 12 34 27.129 +02 11 16.37 11.14 11.16 10.55 17.393   ~ 798 3
39 NGC 4550 GiP 12 35 30.5913588048 +12 13 14.921166792 12.97 12.56 11.68     ~ 524 1
40 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 962 2
41 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1876 1
42 M 90 Sy2 12 36 49.8009839880 +13 09 46.523813040 10.56 10.26 9.54     ~ 849 1
43 M 104 LIN 12 39 59.4302501832 -11 37 22.988264808 9.51 9.55 8.00 8.05   ~ 1333 3
44 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 675 0
45 M 60 GiP 12 43 39.9708251928 +11 33 09.688174056   10.3       ~ 1303 1
46 NGC 4660 GiP 12 44 31.9814021280 +11 11 25.739106972   12.1       ~ 408 0
47 NGC 4881 LIN 12 59 57.7481819280 +28 14 48.009858036 15.03 14.7 13.56     ~ 181 0
48 NGC 5018 GiP 13 13 01.0452720960 -19 31 05.649751992   11.71   10.31   ~ 293 1
49 NGC 5061 GiG 13 18 05.054 -26 50 14.00   11.18 10.41 9.66   ~ 164 0
50 NGC 5845 GiG 15 06 00.7823239488 +01 38 01.704838596   13.8 11.20 12.06 9.94 ~ 366 0
51 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 815 1
52 IC 4889 GiP 19 45 15.168 -54 20 38.91   12.25 11.08 10.73 11.5 ~ 134 0
53 NGC 7192 GiG 22 06 50.1107894976 -64 18 58.721070096   12.21 11.21 10.77   ~ 136 0
54 NGC 7457 G 23 00 59.9263288440 +30 08 41.764398792   11.04 11.87     ~ 422 0

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2022.07.06-18:54:54

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