2024A&A...690A.339M

Query : 2024A&A...690A.339M

2024A&A...690A.339M - Astronomy and Astrophysics, volume 690A339 (2024/10-1)

Dwarf galaxies in the MATLAS Survey: Hubble Space Telescope observations of the globular cluster systems of 74 ultra-diffuse galaxies.

MARLEAU F.R., DUC P.-A., POULAIN M., MULLER O., LIM S., DURRELL P.R., HABAS R., SANCHEZ-JANSSEN R., PAUDEL S. and FENSCH J.

Abstract (from CDS):

Ultra-diffuse galaxies (UDGs), characterised by their low surface brightness and large physical size, constitute a subclass of dwarf galaxies that challenge our current understanding of galaxy formation and evolution. In this paper, we probe the properties of 74 UDGs, identified in the MATLAS survey, based on a comprehensive study of their globular cluster (GC) populations. We obtained high-resolution HST imaging of these galaxies using the ACS F606W and F814W filters, which allowed us to select GCs on the basis of the colour and concentration index. After a background subtraction and completeness correction, we calculated an overall total of 387 GCs. The number of GCs per galaxy ranges from 0 to 38, with the majority (64%) having low counts (0 - 2 GCs). On average, the more massive UDGs tend to host a larger number of GCs. We find that our UDGs have specific frequencies (SN) ranging from 0 to 91, with a small population (9%) having SN > 30. The median SN of our sample is similar to the one for the Perseus cluster UDGs, despite the fact that our UDGs are found in lower density environments. The SN measurements for individual galaxies can extend beyond those found in Perseus, but remain below the values found for UDGs in the Virgo and Coma cluster. Based on a trending analysis of the SN values with the host galaxy properties, we find trends with host galaxy size, roundness, colour, and local density. For the UDGs with sufficiently high statistics, we studied 2D density maps of the GC distributions, which display a variety of appearances: symmetric, asymmetric, off-centre, and elongated. The UDGs with disturbed density maps also show disturbed stellar light morphologies. We further quantified the distribution by modelling it with a Sérsic profile, finding R_e, GC_/R_e, gal_ ∼ 1.0, which indicates that the GCs follow the stellar light of the host galaxy.

Abstract Copyright: © The Authors 2024

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: formation - galaxies: fundamental parameters - galaxies: general - galaxies: star clusters: general

Simbad objects: 93

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Number of rows : 93
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 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 MATLAS-41 G 01 22 29.3 +08 45 57           ~ 2 0
4 AGC 114754 LSB 01 22 30.2 +08 45 41           ~ 9 0
5 MATLAS-49 LSB 01 23 03.5 +09 06 07           ~ 6 0
6 MATLAS-138 G 01 51 35.7 +22 17 38           ~ 5 0
7 MATLAS-141 LSB 01 57 53.1 +18 51 46           ~ 4 0
8 MATLAS-149 LSB 02 00 10.4 +19 21 53           ~ 4 0
9 MATLAS-154 G 02 06 52.0 +10 56 57           ~ 4 0
10 MATLAS-177 LSB 02 28 49.4 -01 18 15           ~ 7 0
11 SMDG J0239150-080657 LSB 02 39 15.11 -08 06 58.6     16.5   16.2 ~ 116 0
12 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
13 LEDA 3097693 LSB 02 41 46.80 -08 24 09.3     16.2   15.8 ~ 183 0
14 MATLAS-203 G 02 49 00.0 -01 46 11           ~ 3 0
15 MATLAS-207 G 02 49 47.0 -01 10 39           ~ 5 0
16 MATLAS-262 LSB 03 11 54.5 -04 53 35           ~ 5 0
17 MATLAS-290 G 03 18 02.6 -01 39 12           ~ 4 0
18 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
19 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
20 SDSS J075811.73+235704.2 LSB 07 58 11.734 +23 57 04.22           ~ 6 0
21 MATLAS-347 G 08 16 32.6 +58 11 24           ~ 4 0
22 MATLAS-365 LSB 08 21 33.6 +22 28 06           ~ 7 0
23 MATLAS-368 LSB 08 22 17.5 +22 54 31           ~ 6 0
24 AGC 180737 LSB 08 28 18.102 +25 47 18.11           ~ 17 0
25 MATLAS-405 LSB 08 43 06.5 +50 04 42           ~ 7 0
26 MATLAS-478 LSB 09 12 52.0 +59 59 13           ~ 7 0
27 MATLAS-524 LSB 09 25 25.0 +34 23 57           ~ 6 0
28 NAME Antlia II Dwarf Galaxy G 09 35 32.8 -36 46 02           ~ 109 0
29 NAME F8D1 G 09 44 47.1 +67 26 19   14.60 13.85     ~ 80 0
30 MATLAS-585 LSB 09 45 49.1 -00 32 49           ~ 5 0
31 MATLAS-627 LSB 10 04 15.5 +59 02 29           ~ 6 0
32 MATLAS-658 LSB 10 17 52.1 +22 20 01           ~ 8 0
33 MATLAS-682 G 10 22 21.0 +12 59 51           ~ 4 0
34 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
35 MATLAS-787 LSB 10 50 54.2 +28 24 35           ~ 6 0
36 MATLAS-791 LSB 10 51 35.5 +28 15 15           ~ 6 0
37 LEDA 2807139 LSB 10 51 59.5 +28 21 36   17.0       ~ 21 0
38 MATLAS-898 LSB 11 17 01.7 +18 18 10           ~ 7 0
39 MATLAS-976 G 11 21 52.2 +03 14 27           ~ 5 0
40 MATLAS-984 LSB 11 22 17.8 +39 02 24           ~ 7 0
41 MATLAS-987 LSB 11 22 46.7 +38 27 35           ~ 7 0
42 MATLAS-1059 LSB 11 27 51.6 +56 51 18           ~ 7 0
43 MATLAS-1154 LSB 12 01 36.0 +61 50 10           ~ 6 0
44 MATLAS-1174 LSB 12 05 30.2 +11 07 50           ~ 6 0
45 MATLAS-1216 LSB 12 15 10.2 +07 18 40           ~ 8 0
46 MATLAS-1225 LSB 12 16 25.1 +27 44 37           ~ 5 0
47 MATLAS-1262 LSB 12 17 51.9 +05 59 21           ~ 7 0
48 MATLAS-1302 LSB 12 19 12.5 +05 21 41           ~ 4 0
49 LEDA 39758 LSB 12 20 03.557 +05 43 14.22   21       ~ 12 0
50 LEDA 39788 AG? 12 20 16.1696620200 +05 02 21.101346456           ~ 16 0
51 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
52 LEDA 42498 G 12 40 50.986 +07 55 50.95   19       ~ 15 0
53 MATLAS-1408 LSB 12 41 11.2 -05 05 52           ~ 7 0
54 LEDA 42555 LSB 12 41 19.063 +02 06 00.41           ~ 10 0
55 MATLAS-1413 LSB 12 41 22.3 -04 27 55           ~ 5 0
56 MATLAS-1437 LSB 12 42 54.9 +02 15 09           ~ 6 0
57 MATLAS-1470 G 12 44 55.6 +02 17 46           ~ 4 0
58 LEDA 3348944 G 12 46 49.4526715128 +02 42 48.261583836           ~ 10 0
59 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
60 MATLAS-1530 G 13 27 10.5 +46 37 57           ~ 4 0
61 MATLAS-1534 LSB 13 28 24.7 +47 03 55           ~ 8 0
62 MATLAS-1539 G 13 29 41.3 +46 38 38           ~ 4 0
63 MATLAS-1545 LSB 13 31 11.5 +46 48 58           ~ 8 0
64 MATLAS-1550 LSB 13 43 51.6 +60 41 20           ~ 6 0
65 MATLAS-1558 LSB 13 45 54.4 +61 05 51           ~ 5 0
66 MATLAS-1577 G 13 48 13.4 +60 53 09           ~ 4 0
67 MATLAS-1589 LSB 13 49 51.2 +59 43 40           ~ 4 0
68 MATLAS-1616 LSB 13 52 29.3 +59 52 34           ~ 7 0
69 MATLAS-1618 G 13 52 33.2 +60 42 54           ~ 3 0
70 MATLAS-1630 LSB 13 53 02.5 +60 10 23           ~ 5 0
71 MATLAS-1647 LSB 13 54 10.5 +40 12 04       20.06   ~ 5 0
72 MATLAS-1662 GiG 13 55 00.6 +40 03 18       19.61   ~ 5 0
73 MATLAS-1667 LSB 13 55 16.6 +59 44 49           ~ 6 0
74 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
75 MATLAS-1740 G 14 07 38.2 +50 30 18           ~ 5 0
76 MATLAS-1779 LSB 14 11 05.3 -05 13 20           ~ 7 0
77 NGC 5493 GiG 14 11 29.3792026752 -05 02 36.999208608   13.5       ~ 110 0
78 MATLAS-1794 LSB 14 13 52.6 -03 03 21           ~ 4 0
79 MATLAS-1801 LSB 14 16 18.8 +36 23 32           ~ 6 0
80 MATLAS-1865 LSB 14 23 28.7 +56 13 56           ~ 4 0
81 MATLAS-1888 LSB 14 29 33.7 +56 31 26           ~ 6 0
82 MATLAS-1907 LSB 14 30 50.9 +03 12 24           ~ 7 0
83 LEDA 3350778 AG? 15 00 33.024 +02 13 49.18       16.22   ~ 18 0
84 MATLAS-1975 LSB 15 03 21.3 +01 25 51       19.06   ~ 8 0
85 MATLAS-1985 LSB 15 04 02.5 +01 22 02       18.30   ~ 8 0
86 SDSS J150520.28+014846.6 LSB 15 05 20.28768 +01 48 46.6111       17.81   ~ 46 0
87 MATLAS-2021 LSB 15 05 21.6 +02 10 20           ~ 7 0
88 NGC 5838 GiG 15 05 26.2447857696 +02 05 57.349108392   12.1   10.26   ~ 252 0
89 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
90 MATLAS-2069 GiG 15 06 41.1 +01 26 09       19.84   ~ 4 0
91 MATLAS-2176 G 23 01 45.0 +16 27 22           ~ 4 0
92 MATLAS-2184 LSB 23 02 34.8 +15 58 45           ~ 4 0
93 NAME Local Group GrG ~ ~           ~ 9325 0

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