2018ApJ...862...82L

Query : 2018ApJ...862...82L

2018ApJ...862...82L - Astrophys. J., 862, 82-82 (2018/July-3)

The globular cluster systems of ultra-diffuse galaxies in the Coma cluster.

LIM S., PENG E.W., COTE P., SALES L.V., DEN BROK M., BLAKESLEE J.P. and GUHATHAKURTA P.

Abstract (from CDS):

Ultra-diffuse galaxies (UDGs) are unusual galaxies with low luminosities, similar to classical dwarf galaxies, but with sizes up to ∼5 larger than expected for their mass. Some UDGs have large populations of globular clusters (GCs), something unexpected in galaxies with such low stellar density and mass. We have carried out a comprehensive study of GCs in both UDGs and classical dwarf galaxies at comparable stellar masses using Hubble Space Telescope (HST) observations of the Coma cluster. We present new imaging for 33 Dragonfly UDGs with the largest effective radii (>2 kpc), and additionally include 15 UDGs and 54 classical dwarf galaxies from the HST/ACS Coma Treasury Survey and the literature. Out of a total of 48 UDGs, 27 have statistically significant GC systems, and 11 have candidate nuclear star clusters. The GC specific frequency (SN) varies dramatically, with the mean SN being higher for UDGs than for classical dwarfs. At constant stellar mass, galaxies with larger sizes (or lower surface brightnesses) have higher SN, with the trend being stronger at higher stellar mass. At lower stellar masses, UDGs tend to have higher SN when closer to the center of the cluster, i.e., in denser environments. The fraction of UDGs with a nuclear star cluster also depends on environment, varying from ∼40% in the cluster core, where it is slightly lower than the nucleation fraction of classical dwarfs, to <=20% in the outskirts. Collectively, we observe an unmistakable diversity in the abundance of GCs, and this may point to multiple formation routes.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: individual: Coma - galaxies: evolution - galaxies: formation - galaxies: star clusters: general

Simbad objects: 107

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Number of rows : 107
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 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
2 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
3 NGVS J122810.07+124329.4 LSB 12 28 10.0726 +12 43 29.447     17.6     ~ 21 0
4 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
5 SMDG J1253152+274115 LSB 12 53 15.1 +27 41 15           ~ 14 0
6 SMDG J1255062+273727 LSB 12 55 06.161 +27 37 27.32     20.73 20.45   ~ 10 0
7 SMDG J1255481+263352 LSB 12 55 48.1 +26 33 53           ~ 9 0
8 SMDG J1255554+272736 LSB 12 55 55.40 +27 27 35.9     20.80 20.69   ~ 13 0
9 SMDG J1256129+273250 LSB 12 56 12.95 +27 32 50.3   21.67 21.15 21.18   ~ 13 0
10 SMDG J1256227+281955 LSB 12 56 22.687 +28 19 54.26     20.90 20.48   ~ 12 0
11 SMDG J1256284+273707 LSB 12 56 28.41 +27 37 06.3     20.18 20.06   ~ 12 0
12 SMDG J1256297+282640 LSB 12 56 29.678 +28 26 40.47     19.86 20.60   ~ 13 0
13 SDSS J125636.63+271503.6 G 12 56 36.614 +27 15 03.19         19.5 ~ 4 0
14 SDSS J125700.89+273155.1 LSB 12 57 00.890 +27 31 55.17   21.51 20.37 20.29 20.3 ~ 13 0
15 SMDG J1257017+282325 LSB 12 57 01.687 +28 23 24.73     19.14 18.50   ~ 31 0
16 SDSS J125711.01+273142.2 G 12 57 11.011 +27 31 42.22     18.81 18.53 18.6 ~ 8 0
17 SDSS J125712.27+272313.0 G 12 57 12.277 +27 23 13.03     18.79 18.61 18.7 ~ 8 0
18 SDSS J125713.23+272437.1 G 12 57 13.228 +27 24 37.16   19.7 18.45 18.23 18.4 ~ 9 0
19 SMDG J1257189+270556 LSB 12 57 18.922 +27 05 55.62     20.00 20.55   ~ 11 0
20 SDSS J125801.11+271126.4 LSB 12 58 01.119 +27 11 26.47   20.66 20.02 19.68   ~ 19 0
21 SMDG J1258050+274359 LSB 12 58 05.047 +27 43 58.50     19.92 19.97   ~ 11 0
22 [ARF2020] COMA 32 5262 LSB 12 58 07.824 +27 54 45.48     20.79 20.64   ~ 9 0
23 SMDG J1258104+271912 LSB 12 58 10.411 +27 19 11.48   21.32 20.28 20.08   ~ 11 0
24 SMDG J1258164+275330 LSB 12 58 16.351 +27 53 29.27     20.29 20.23   ~ 10 0
25 SDSS J125828.36+271315.3 G 12 58 28.360 +27 13 15.31     18.60 18.59 18.6 ~ 10 0
26 SDSS J125843.29+274721.0 G 12 58 43.294 +27 47 21.06     20.39 20.07 20.8 ~ 4 0
27 SDSS J125844.37+274740.9 G 12 58 44.377 +27 47 40.96     18.32 18.07 18.5 ~ 6 0
28 SDSS J125856.94+274719.9 G 12 58 56.947 +27 47 19.91         20.0 ~ 4 0
29 SDSS J125905.94+280228.8 G 12 59 05.944 +28 02 28.81 20.69   19.76 18.57 18.7 ~ 16 0
30 [ARF2020] COMA 22 6669 LSB 12 59 09.360 +27 49 48.32   22.21 21.34 20.98   ~ 9 0
31 [ARF2020] COMA 24 4030 LSB 12 59 09.528 +29 00 24.47     20.28 19.98   ~ 18 0
32 SDSS J125913.94+290718.1 LSB 12 59 13.942 +29 07 18.18     20.25 20.02   ~ 12 0
33 SDSS J125914.44+280217.4 LSB 12 59 14.446 +28 02 17.44   20.67   19.78 19.8 ~ 19 0
34 SMDG J1259163+281751 LSB 12 59 16.303 +28 17 50.67     19.95 19.84   ~ 12 0
35 SMDG J1259238+274727 LSB 12 59 23.85 +27 47 27.2   21.16 20.23 19.82   ~ 15 0
36 SDSS J125925.47+280210.6 LSB 12 59 25.470 +28 02 10.67     21.04 20.54 20.7 ~ 4 0
37 SDSS J125927.22+275256.9 G 12 59 27.223 +27 52 56.98   21.18 20.35 19.40 19.33 ~ 8 0
38 [ARF2020] COMA 22 4680 LSB 12 59 27.521 +27 52 17.82   21.67 20.57 20.32 20.3 ~ 9 0
39 [BKY2023] 768 LSB 12 59 28.6 +28 01 22         20.8 ~ 8 0
40 SDSS J125934.40+275942.8 G 12 59 34.403 +27 59 42.89     19.94 19.68 19.9 ~ 11 0
41 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
42 SDSS J125937.99+280054.1 LSB 12 59 37.996 +28 00 54.19     21.87 21.76 21.5 ~ 4 0
43 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
44 SDSS J125944.77+275537.1 LSB 12 59 44.776 +27 55 37.17   20.73 19.73 19.45 20.2 ~ 9 0
45 SMDG J1259487+274639 LSB 12 59 48.72 +27 46 39.0   21.88 20.46 20.07   ~ 18 0
46 SDSS J125952.18+275946.3 G 12 59 52.188 +27 59 46.34     20.64 20.35 20.6 ~ 9 0
47 SDSS J125955.93+275748.6 G 12 59 55.933 +27 57 48.67 20.97   19.76 19.05 19.2 ~ 7 0
48 SDSS J125956.50+275909.7 LSB 12 59 56.500 +27 59 09.73     21.08 20.86 21.0 ~ 4 0
49 SDSS J125956.77+275615.5 LSB 12 59 56.773 +27 56 15.50     20.62 20.33 20.6 ~ 5 0
50 SDSS J125958.22+275410.7 G 12 59 58.224 +27 54 10.77 20.61   19.71 18.79 18.9 ~ 7 0
51 SDSS J130005.34+275628.8 G 13 00 05.349 +27 56 28.87 20.22 19.995 18.91 18.66 18.7 ~ 8 0
52 SDSS J130005.76+280212.1 G 13 00 05.764 +28 02 12.17     19.91 19.63 19.8 ~ 7 0
53 SDSS J130007.04+275416.8 LSB 13 00 07.042 +27 54 16.82   23.25   22.33 20.6 ~ 5 0
54 [ARF2020] COMA 22 5585 LSB 13 00 09.055 +28 08 27.14     20.92 20.47   ~ 9 0
55 SDSS J130010.38+275616.9 G 13 00 10.386 +27 56 16.97       20.36 20.3 ~ 5 0
56 GMP 2877 GiC 13 00 11.410 +27 54 36.37 19.87 19.88 19.08 18.04 18.3 ~ 12 0
57 SDSS J130011.77+280502.4 LSB 13 00 11.772 +28 05 02.48   21.04 20.21 19.69 19.1 ~ 12 0
58 [ARF2020] COMA 22 5202 LSB 13 00 14.856 +28 00 31.00   21.87 20.77 20.66   ~ 8 0
59 SDSS J130015.72+280551.6 G 13 00 15.726 +28 05 51.60   20.93 19.60 19.28 19.5 ~ 7 0
60 SDSS J130015.73+280146.7 LSB 13 00 15.731 +28 01 46.73     20.45 20.17 20.4 ~ 6 0
61 SDSS J130016.35+275522.1 G 13 00 16.358 +27 55 22.11     19.61 19.33 19.6 ~ 9 0
62 SDSS J130016.67+275638.6 LSB 13 00 16.673 +27 56 38.67   20.58 19.93 18.76 18.52 ~ 11 0
63 [ARF2020] COMA 22 8041 LSB 13 00 17.278 +28 00 58.78   23.76 21.98 21.64   ~ 6 0
64 [ARF2020] COMA 12 6761 LSB 13 00 18.398 +27 55 30.74   22.68 21.38 21.12 21.6 ~ 7 0
65 [ARF2020] COMA 22 6621 LSB 13 00 18.866 +27 48 06.99   22.48 21.32 21.08   ~ 11 0
66 SDSS J130019.09+280508.9 G 13 00 19.091 +28 05 08.92         20.2 ~ 3 0
67 GMP 2754 GiC 13 00 20.280 +28 04 53.22     20.02 19.84 20.4 ~ 8 0
68 SDSS J130020.39+280413.9 G 13 00 20.392 +28 04 13.96 20.44   18.59 18.32 18.9 ~ 11 0
69 GMP 2748 LSB 13 00 20.61 +27 47 12.3   20.15 19.20 18.76   ~ 27 0
70 SDSS J130021.38+280327.3 LSB 13 00 21.384 +28 03 27.33   21.89 20.88 20.49 20.5 ~ 9 0
71 [ARF2020] COMA 22 6673 LSB 13 00 21.715 +27 56 50.26   22.57 21.34 21.07 21.4 ~ 9 0
72 SDSS J130022.01+280220.9 LSB 13 00 21.9 +28 02 18   22.03 21.27 20.21 20.51 ~ 8 0
73 SDSS J130022.65+275754.8 G 13 00 22.651 +27 57 54.89 20.31 20.122 18.30 17.89 18.2 ~ 17 0
74 SDSS J130022.90+275515.0 G 13 00 22.905 +27 55 15.08   20.82 20.15 18.85 19.03 ~ 10 0
75 [ARF2020] COMA 12 4624 LSB 13 00 23.230 +27 59 48.63     20.55 20.23 21.1 ~ 5 0
76 SDSS J130025.04+275638.1 G 13 00 25.049 +27 56 38.12     19.77 19.43 20.1 ~ 6 0
77 SDSS J130026.87+280450.7 G 13 00 26.878 +28 04 50.73     19.90 19.54 20.2 ~ 4 0
78 SDSS J130027.57+280323.9 G 13 00 27.571 +28 03 23.94   20.03 19.31 18.73 18.5 ~ 8 0
79 [HVH2010] Comai J130026.767+275953.57 G 13 00 28.0 +27 59 54         20.5 ~ 3 0
80 GMP 2641 LSB 13 00 29.198 +27 59 24.62   21.37 20.52 20.18 20.2 ~ 14 0
81 SDSS J130029.72+275806.5 LSB 13 00 29.723 +27 58 06.55         21.2 ~ 6 0
82 SDSS J130030.06+280134.8 G 13 00 30.063 +28 01 34.86     20.45 20.23 20.9 ~ 6 0
83 SDSS J130031.97+280125.1 LSB 13 00 31.764 +28 01 21.87     20.43 20.13 21.0 ~ 6 0
84 SDSS J130032.61+280331.4 G 13 00 32.618 +28 03 31.45 20.32 19.98 19.25 18.61 18.2 ~ 8 0
85 SDSS J130032.96+275406.5 LSB 13 00 32.964 +27 54 06.59         18.5 ~ 5 0
86 [ARF2020] COMA 12 7113 LSB 13 00 33.670 +27 55 25.08   22.62 21.53 21.27 21.4 ~ 7 0
87 SDSS J130034.32+275817.6 G 13 00 34.323 +27 58 17.62     19.98 19.76 20.4 ~ 6 0
88 [ARF2020] COMA 21 5651 LSB 13 00 35.614 +27 29 51.12     20.95 20.70   ~ 8 0
89 SDSS J130037.05+280544.7 LSB 13 00 36.9 +28 05 46         20.5 ~ 4 0
90 SDSS J130039.31+275748.1 LSB 13 00 39.316 +27 57 48.11     19.85 19.57 20.4 ~ 7 0
91 SDSS J130039.35+280410.8 LSB 13 00 39.352 +28 04 10.89   21.45 20.21 19.87 20.5 ~ 11 0
92 SDSS J130043.72+275921.1 LSB 13 00 43.727 +27 59 21.11     20.94 20.54 21.1 ~ 6 0
93 SDSS J130045.85+280335.9 G 13 00 45.857 +28 03 35.94       20.98 21.5 ~ 4 0
94 SMDG J1300473+264700 LSB 13 00 47.280 +26 46 59.30     20.73 20.07   ~ 13 0
95 SDSS J130050.47+280357.1 LSB 13 00 50.477 +28 03 57.13   21.23 19.97 19.85 20.1 ~ 10 0
96 SMDG J1300514+280427 LSB 13 00 51.391 +28 04 25.93   21.98 20.76 20.49 20.4 ~ 12 0
97 SDSS J130052.91+280435.8 LSB 13 00 52.912 +28 04 35.84     21.46 21.08 21.4 ~ 5 0
98 SMDG J1300580+265835 LSB 13 00 57.996 +26 58 34.72     19.37 18.43   ~ 145 0
99 SMDG J1301191+270315 LSB 13 01 19.090 +27 03 15.21     20.11 19.69   ~ 17 0
100 SMDG J1301303+282229 LSB 13 01 30.341 +28 22 28.55     20.25 20.20   ~ 21 0
101 SMDG J1301561+280722 LSB 13 01 56.165 +28 07 22.22     20.80 20.46   ~ 9 0
102 SMDG J1301582+275012 LSB 13 01 58.205 +27 50 11.91     19.89 19.45   ~ 61 0
103 SMDG J1302165+285717 LSB 13 02 16.601 +28 57 16.76     20.06 19.81   ~ 17 0
104 SMDG J1302254+281358 LSB 13 02 25.5 +28 13 58           ~ 8 0
105 SMDG J1302334+283452 LSB 13 02 33.4 +28 34 51           ~ 12 0
106 SMDG J1302578+274724 LSB 13 02 57.8 +27 47 25           ~ 9 0
107 SMDG J1304052+274804 LSB 13 04 05.1 +27 48 05           ~ 8 0

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