2017ApJ...835..101H


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST19:28:08

2017ApJ...835..101H - Astrophys. J., 835, 101-101 (2017/January-3)

Globular cluster systems in brightest cluster galaxies. III. Beyond bimodality.

HARRIS W.E., CICCONE S.M., EADIE G.M., GNEDIN O.Y., GEISLER D., ROTHBERG B. and BAILIN J.

Abstract (from CDS):

We present new deep photometry of the rich globular cluster (GC) systems around the Brightest Cluster Galaxies UGC 9799 (Abell 2052) and UGC 10143 (Abell 2147), obtained with the Hubble Space Telescope (HST) ACS and WFC3 cameras. For comparison, we also present new reductions of similar HST/ACS data for the Coma supergiants NGC 4874 and 4889. All four of these galaxies have huge cluster populations (to the radial limits of our data, comprising from 12,000 to 23,000 clusters per galaxy). The metallicity distribution functions (MDFs) of the GCs can still be matched by a bimodal-Gaussian form where the metal-rich and metal-poor modes are separated by ≃0.8 dex, but the internal dispersions of each mode are so large that the total MDF becomes very broad and nearly continuous from [Fe/H] ≃ -2.4 to solar. There are, however, significant differences between galaxies in the relative numbers of metal-rich clusters, suggesting that they underwent significantly different histories of mergers with massive gas-rich halos. Last, the proportion of metal-poor GCs rises especially rapidly outside projected radii R 4 Reff, suggesting the importance of accreted dwarf satellites in the outer halo. Comprehensive models for the formation of GCs as part of the hierarchical formation of their parent galaxies will be needed to trace the systematic change in structure of the MDF with galaxy mass, from the distinctly bimodal form in smaller galaxies up to the broad continuum that we see in the very largest systems.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: formation - galaxies: star clusters - globular clusters: general - globular clusters: general

Simbad objects: 47

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Number of rows : 47

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 582 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11049 1
3 2MASX J01271371+3451426 GiC 01 27 13.6952148892 +34 51 42.389517796   15.7       ~ 5 0
4 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1304 0
5 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1463 1
6 NGC 1407 GiG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 531 1
7 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 153 0
8 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3996 5
9 NGC 3115 GiG 10 05 13.978 -07 43 06.89   11   9.37   ~ 936 2
10 NGC 3309 GiG 10 36 35.651 -27 31 06.35   11.98 11.78 10.34 10.51 ~ 144 0
11 NGC 3311 BiC 10 36 42.821 -27 31 42.02   11.93 10.93 10.00 9.67 ~ 269 2
12 ACO 1185 ClG 11 10 31.4 +28 43 39           ~ 245 1
13 NGC 4278 LIN 12 20 06.8253868 +29 16 50.713486 11.54 11.09 10.16     ~ 892 2
14 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 800 0
15 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5906 0
16 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1971 2
17 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6282 3
18 NGC 4494 GiP 12 31 24.034 +25 46 29.93   10.55 9.74     ~ 451 0
19 M 104 LIN 12 39 59.43185 -11 37 22.9954 9.51 9.55 8.00 8.05   ~ 1284 3
20 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1258 0
21 NGC 4869 rG 12 59 23.331 +27 54 41.81 15.03 14.9 13.52 13.292 12.536 ~ 264 0
22 NGC 4873 G 12 59 32.7957366104 +27 59 01.019381036 15.53 15.4 14.13 13.941 13.224 ~ 110 0
23 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 722 3
24 NGC 4875 GiC 12 59 37.9094191824 +27 54 26.397642327 16.03 15.92 14.57 14.322 13.605 ~ 88 0
25 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4262 2
26 NGC 4886 GiG 13 00 04.4492277583 +27 59 15.306855361 15.595 15.1 14.294 13.712 13.092 ~ 122 0
27 LEDA 44708 GiC 13 00 06.108 +27 58 41.87 17.241 16.9 15.994 15.46 14.743 ~ 30 0
28 NGC 4889 BiC 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 651 1
29 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1029 0
30 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4028 3
31 UGC 9799 Sy2 15 16 44.4894653562 +07 01 17.830884159   15.19 14.17     ~ 419 3
32 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 682 1
33 2MASX J15164576+0700160 GiG 15 16 45.7714737735 +07 00 15.685324180   15.5       ~ 27 0
34 2MASX J15164731+0656000 GiC 15 16 47.2916988382 +06 55 59.926993973   16.64   15.11   ~ 6 0
35 2MASX J15165389+0656220 LIN 15 16 53.9209941345 +06 56 22.033304813   15.3       ~ 32 0
36 NAME HERCULES SUPERCL SCG 15 47 +18.2           ~ 137 1
37 MCG+03-41-051 GiG 16 02 12.806 +15 54 27.25   15.3       ~ 29 0
38 MCG+03-41-052 GiG 16 02 13.264 +15 56 15.24   15.3       ~ 30 0
39 UGC 10143 BiC 16 02 17.007 +15 58 28.25   14.9       ~ 78 0
40 ACO 2147 ClG 16 02 17.2 +15 53 43           ~ 375 0
41 2MASX J16023373+1555259 G 16 02 33.7641184663 +15 55 26.450521298           ~ 5 0
42 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 557 3
43 ACO 2152 ClG 16 05 22.4 +16 26 55           ~ 153 0
44 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1106 1
45 3C 338.0 QSO 16 28 38.2447110 +39 33 04.233634   12.78 11.78     ~ 709 5
46 NGC 6861 GiP 20 07 19.482 -48 22 12.94   12.01 11.10 10.43   ~ 163 0
47 NAME Local Group GrG ~ ~           ~ 7067 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-19:28:08

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