2023ApJ...953..154H

Query : 2023ApJ...953..154H

2023ApJ...953..154H - Astrophys. J., 953, 154 (2023/August-3)

Comparing Globular Cluster System Properties with Host Galaxy Environment.

HARTMAN K., HARRIS W.E., BLAKESLEE J.P., MA C.-P. and GREENE J.E.

Abstract (from CDS):

We present Hubble Space Telescope photometry in the optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies. The targets are selected from the volume-limited MASSIVE survey, and chosen to sample a range of environments from sparsely populated groups to the brightest cluster galaxies in dense clusters. We also present a quantitative model of the relation between (F475X - F110W) color and cluster metallicity [M/H], using simulated GCs. Because much of the GC population in such galaxies is built up through accretion, the metallicity distribution of the GC systems might be expected to vary with galaxy environment. The photometry is used to create a completeness-corrected metallicity distribution for each galaxy in the sample, and to fit a double Gaussian curve to each histogram in order to model the two standard red and blue subpopulations. Finally, the properties of the GC metallicity distribution are correlated against galaxy environment. We find that almost no GCS properties and host galaxy environmental properties are correlated, with the exception of a weak but consistent correlation between blue fraction and nth-nearest-neighbor surface density. The results suggest that the systemic properties of the GC systems, at least in the inner to midhalo regions, are influenced more strongly by the local environment at early times, rather than by the environmental properties we see today.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Elliptical galaxies - Galaxy formation - Galaxy stellar halos - Globular star clusters

Simbad objects: 31

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Number of rows : 31
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 NGC 57 GiG 00 15 30.873 +17 19 42.22   13.7       ~ 101 0
2 [CHM2007] LDC 11 GrG 00 15 39.0 +18 11 58           ~ 2 0
3 [CHM2007] HDC 53 GrG 01 09 52.6 +32 43 06           ~ 4 0
4 NGC 410 GiG 01 10 58.9016492712 +33 09 07.053878052 13.08 12.52 11.48     ~ 163 2
5 NGC 533 rG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 237 1
6 [CHM2007] HDC 74 GrG 01 26 43.6 +01 58 29           ~ 2 0
7 [CHM2007] HDC 102 GrG 01 56 21.0 +06 09 34           ~ 2 0
8 NGC 741 rG 01 56 23.2 +05 37 35   13.2       ~ 309 2
9 NGC 777 BLL 02 00 14.9065707744 +31 25 45.850721628 13.09 12.49 11.45     ~ 195 2
10 [CHM2007] HDC 109 GrG 02 01 20.1 +31 48 32           ~ 3 0
11 [CHM2007] HDC 159 GrG 02 38 17.2 +02 08 47           ~ 3 0
12 NGC 1016 GiG 02 38 19.5696395016 +02 07 09.482594448   13.3       ~ 95 0
13 [CHM2007] HDC 185 GrG 02 53 39.6 +41 36 14           ~ 4 0
14 NGC 1129 BiC 02 54 27.400 +41 34 46.70   14.6 13.6     ~ 126 1
15 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
16 [CHM2007] HDC 294 GrG 04 32 02.0 -05 06 04           ~ 3 0
17 [CHM2007] HDC 426 GrG 07 09 33.0 +50 25 08           ~ 3 0
18 NGC 2340 GiG 07 11 10.8134548992 +50 10 28.896247632   13.9       ~ 68 0
19 NGC 3158 rG 10 13 50.527 +38 45 53.68   13.4       ~ 129 0
20 [CHM2007] HDC 570 GrG 10 14 03.6 +38 53 39           ~ 3 0
21 NGC 3842 BiC 11 44 02.155 +19 56 59.37 14.22 13.70 11.82 12.04   ~ 308 3
22 [CHM2007] HDC 672 GrG 11 44 35.4 +19 58 45           ~ 4 0
23 NGC 4073 BiC 12 04 27.0598775760 +01 53 45.611893752   13.8 13.21 14.249   ~ 211 1
24 [CHM2007] HDC 692 GrG 12 04 35.1 +01 53 36           ~ 4 0
25 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
26 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
27 [CHM2007] LDC 929 GrG 12 59 12.8 +36 59 57           ~ 2 0
28 [CHM2007] HDC 745 GrG 12 59 21.0 +27 59 04           ~ 3 0
29 NGC 4914 GiG 13 00 42.9243584856 +37 18 54.890854200   12.7       ~ 93 0
30 [CHM2007] HDC 1186 GrG 22 15 24.6 +37 09 06           ~ 4 0
31 NGC 7242 GiG 22 15 39.507 +37 17 55.48   14.6       ~ 50 0

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