2021MNRAS.507.3312G

Query : 2021MNRAS.507.3312G

2021MNRAS.507.3312G - Mon. Not. R. Astron. Soc., 507, 3312-3330 (2021/November-1)

STEP survey - II. Structural analysis of 170 star clusters in the SMC.

GATTO M., RIPEPI V., BELLAZZINI M., TOSI M., CIGNONI M., TORTORA C., LECCIA S., CLEMENTINI G., GREBEL E.K., LONGO G., MARCONI M. and MUSELLA I.

Abstract (from CDS):

We derived surface brightness profiles in the g band for 170 Small Magellanic Cloud (SMC) star clusters (SCs) mainly located in the central region of the galaxy. We provide a set of homogeneous structural parameters obtained by fitting Elson-Fall-Freeman and King models. Through a careful analysis of their colour-magnitude diagrams we also supply the ages for a subsample of 134 SCs. For the first time, such a large sample of SCs in the SMC is homogeneously characterized in terms of their sizes, luminosities, and masses, widening the probed region of the parameter space, down to hundreds of solar masses. We used these data to explore the evolution of the SC's structural parameters with time. In particular, we confirm the existence of a physical mechanism that induces an increase of the core radius after 0.3-1.0 Gyr. We suggest that cluster mass could be the main parameter driving the inner expansion, as none of the SCs having log (M/M☉) <= 3.5 dex analysed in this work undergoes to such an expansion. We also detected a mass-size relationship almost over the entire range of SCs masses investigated here. Finally, our data suggest that globally the SMC SC system is dynamically evolved.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): surveys - Hertzsprung-Russell and colour-magnitude diagrams - galaxies: star clusters: general - Magellanic Clouds

VizieR on-line data: <Available at CDS (J/MNRAS/507/3312): clusters.dat>

Simbad objects: 184

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Number of rows : 184
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 ESO 28-15 OpC 00 21 27 -73 44.9   13.9       ~ 35 0
2 ESO 28-17 OpC 00 23 04 -73 40.2   15.3       ~ 32 0
3 Cl Lindsay 7 Cl* 00 24 43.16 -73 45 11.7   13.2       ~ 39 0
4 NGC 121 GlC 00 26 49.0 -71 32 10   11.2 11.24     ~ 330 0
5 [RZ2005] 5 OpC 00 28 02.14 -73 18 13.6 15.74 15.46 14.85   13.85 ~ 25 0
6 OGLE-CL SMC 316 Cl* 00 28 31 -73 00.8           ~ 7 0
7 [H86] 6 As* 00 29 22 -73 00.0           ~ 5 0
8 [RZ2005] 7 OpC 00 30 00.26 -73 22 40.7 15.46 14.92 13.84   12.52 ~ 31 0
9 Cl Lindsay 14 Cl* 00 32 41.02 -72 34 50.1 15.79 15.53 14.66   13.76 ~ 18 0
10 [H86] 11 Cl* 00 32 54 -73 30.5           ~ 4 0
11 NGC 152 OpC 00 32 56.76 -73 06 56.4 13.37 13.05 12.26   11.13 ~ 96 0
12 HW 8 Cl* 00 33 47.92 -73 37 58.3 13.96 14.09 13.83   13.37 ~ 17 0
13 Cl Lindsay 17 OpC 00 35 41.70 -73 35 51.4 14.27 14.13 13.35   12.45 ~ 28 0
14 NGC 176 Cl* 00 35 58.68 -73 09 56.5 12.76 13.06 13.01   13.09 ~ 33 0
15 HW 9 Cl* 00 36 25.49 -73 00 09.0 17.70 17.70 17.03   16.35 ~ 14 0
16 [RZ2005] 16 OpC 00 36 26.62 -72 28 43.7 14.82 14.70 13.89   13.01 ~ 26 0
17 HW 10 Cl* 00 36 30.99 -72 59 10.8 15.98 15.97 15.24   14.40 ~ 13 0
18 Bruck 9 Cl* 00 37 16.21 -72 57 49.0 15.50 15.85 15.74   15.28 ~ 14 0
19 HW 11 Cl* 00 37 31.74 -73 36 49.3 14.81 14.67 14.31   13.93 ~ 16 0
20 Cl Lindsay 19 Cl* 00 37 41.78 -73 54 19.7 13.70 14.78 13.18   12.17 ~ 36 0
21 Bruck 10 Cl* 00 37 44.03 -73 12 39.8           ~ 10 0
22 Bruck 12 Cl* 00 38 22 -73 16.5           ~ 7 0
23 OGLE-CL SMC 5 As* 00 39 21.63 -73 15 28.4           ~ 10 0
24 OGLE-CL SMC 6 Cl* 00 39 33.12 -73 10 37.2           ~ 9 0
25 [RZ2005] 22 OpC 00 40 12.67 -72 41 54.9 14.53 14.42 13.96   13.34 ~ 19 0
26 HW 14 Cl* 00 40 14.82 -73 52 10.5 14.86 14.40 13.72   12.83 ~ 12 0
27 [RZ2005] 24 OpC 00 40 33.39 -72 44 24.2 16.27 16.01 15.42   14.77 ~ 16 0
28 NGC 222 OpC 00 40 42.11 -73 23 00.8 12.63 12.84 12.64   12.31 ~ 32 0
29 [H86] 60 Cl* 00 40 43 -73 07.1           ~ 9 0
30 Bruck 26 Cl* 00 40 44.77 -73 44 26.4           ~ 10 0
31 NGC 220 OpC 00 40 55.96 -73 24 10.1 14.24 14.61 14.39   14.49 ~ 34 0
32 Cl Kron 17 OpC 00 41 01 -72 34.3   12.7       ~ 20 0
33 Bruck 18 Cl* 00 41 06 -72 43.6           ~ 4 0
34 NGC 231 OpC 00 41 07.24 -73 20 58.4 13.01 13.14 12.87   12.62 ~ 33 0
35 Bruck 21 Cl* 00 41 15.30 -72 49 54.9           ~ 8 0
36 Bruck 22 Cl* 00 41 21 -72 49.5           ~ 6 0
37 Cl Lindsay 27 Cl* 00 41 23.83 -72 53 32.0 13.37 13.28 12.44   11.49 ~ 46 0
38 OGLE-CL SMC 172 Cl* 00 41 48.35 -73 23 27.4           ~ 7 0
39 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
40 HW 18 Cl* 00 42 58 -72 24.7           ~ 6 0
41 [RZ2005] 34 Cl* 00 42 59.87 -72 35 21.0 14.30 14.28 13.69   12.97 ~ 22 0
42 NGC 241 Cl* 00 43 32.74 -73 26 25.4           ~ 26 1
43 NGC 242 OpC 00 43 37.57 -73 26 37.9   12.1       ~ 38 1
44 NAME Bruck 34A As* 00 44 23.0 -72 56 44           ~ 6 0
45 Bruck 34 Cl* 00 44 51.57 -73 00 07.4           ~ 16 0
46 OGLE-CL SMC 25 Cl* 00 45 10.64 -73 13 17.6 13.63 13.78 13.44   13.11 ~ 16 0
47 OGLE-CL SMC 28 Cl* 00 45 27.92 -72 49 09.7           ~ 8 0
48 Bruck 39 Cl* 00 45 28.06 -73 28 50.7 14.97 14.60 14.13   13.33 ~ 19 0
49 NGC 256 OpC 00 45 54.11 -73 30 23.9 12.67 12.75 12.50   12.02 ~ 38 0
50 OGLE-CL SMC 36 Cl* 00 46 34.71 -72 44 25.2 14.75 14.50 13.76   12.49 ~ 17 0
51 HW 22 Cl* 00 46 45.17 -72 03 45.9 15.80 15.42 14.60   13.48 ~ 16 0
52 OGLE-CL SMC 40 Cl* 00 47 01.18 -73 23 34.7           ~ 10 0
53 OGLE-CL SMC 187 Cl* 00 47 05.87 -73 22 16.6           ~ 14 0
54 [MA93] 163 Em* 00 47 11.4 -73 28 37 12.50 12.52 12.17   11.47 ~ 56 0
55 OGLE-CL SMC 41 Cl* 00 47 25.55 -72 50 37.5 13.92 14.22 13.97   13.64 ~ 15 0
56 OGLE-CL SMC 43 Cl* 00 47 53.42 -73 13 14.1 13.74 13.18 12.71   12.19 ~ 24 0
57 OGLE-CL SMC 45 OpC 00 48 02.85 -73 29 17.8 14.21 14.20 14.00   13.78 ~ 27 0
58 Cl Kron 27 OpC 00 48 14.58 -73 51 43.5 14.02 13.70 12.65   10.90 ~ 16 0
59 NGC 269 Cl* 00 48 22.25 -73 31 48.8 13.05 12.98 12.59   11.90 ~ 37 0
60 OGLE-CL SMC 53 Cl* 00 49 17.52 -73 12 41.8           ~ 12 1
61 HW 26 As* 00 49 38 -73 42.5           ~ 8 0
62 Bruck 52 Cl* 00 49 39.75 -73 03 31.7           ~ 14 0
63 [H86] 114 Cl* 00 50 34.83 -72 39 02.0 14.22 14.44 14.08   13.73 ~ 10 0
64 NGC 290 Cl* 00 51 12.33 -73 09 42.1 11.91 12.10 11.71   11.09 ~ 39 0
65 Cl Kron 28 OpC 00 51 39.55 -71 59 56.6 10.98 10.56 10.42   10.04 ~ 34 0
66 [H86] 137 Cl* 00 52 33.61 -72 40 45.2 14.56 14.76 14.37   13.77 ~ 15 0
67 [RZ2005] 73 OpC 00 52 36.07 -72 11 36.5 12.28 12.74 12.12   10.94 ~ 21 0
68 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
69 Bruck 65 Cl* 00 52 45.25 -72 59 01.5 12.81 13.21 12.98   12.74 ~ 16 0
70 OGLE-CL SMC 88 OpC 00 53 00.37 -72 53 41.2 11.73 12.05 11.71   11.31 ~ 22 0
71 NGC 294 Cl* 00 53 05.59 -73 22 49.4 12.66 12.67 12.24   11.61 ~ 44 1
72 [RZ2005] 82 Cl* 00 53 09.07 -71 59 48.1 15.38 15.60 14.46   13.59 ~ 5 0
73 Bruck 71 Cl* 00 53 19.42 -72 46 00.9 12.23 12.78 11.91   10.67 ~ 17 0
74 NGC 299 Cl* 00 53 24.74 -72 11 47.6 11.71 12.05 11.73   10.67 ~ 41 0
75 Bruck 70 Cl* 00 53 26 -71 45.2           ~ 4 0
76 ESO 51-6 Cl* 00 53 28.06 -71 23 55.2 12.29 12.91 12.88   12.90 ~ 17 0
77 [H86] 146 As* 00 53 43 -72 23.3           ~ 9 0
78 NGC 306 Cl* 00 54 14.31 -72 14 27.3 12.08 12.23 12.07   11.40 ~ 33 0
79 Bruck 80 Cl* 00 54 46.74 -73 13 22.9 14.51 14.36 13.11   11.92 ~ 15 0
80 Bruck 79 Cl* 00 54 48.50 -72 27 53.6 12.76 12.99 12.85   12.55 ~ 23 0
81 ESO 51-7 Cl* 00 54 54.21 -72 06 48.0 12.71 13.01 13.07   11.70 ~ 19 0
82 [H86] 150 Cl* 00 54 57 -73 25.0           ~ 5 0
83 OGLE-CL SMC 102 Cl* 00 55 12.04 -72 41 00.0           ~ 14 1
84 [RZ2005] 93 Cl* 00 55 17.06 -73 30 05.4 14.37 14.44 14.11   13.64 ~ 12 0
85 OGLE-CL SMC 104 OpC 00 55 33.18 -72 50 00.1 13.34 13.25 12.89   12.20 ~ 35 0
86 [BS95] 76 Cl* 00 55 39 -71 55.3           ~ 8 0
87 [H86] 168 As* 00 55 42.99 -72 52 48.4           ~ 15 0
88 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 445 0
89 OGLE-CL SMC 225 Cl* 00 57 17.80 -72 56 01.3           ~ 12 0
90 LHA 115-S 26 Cl* 00 57 30.00 -72 15 53.0 11.29       11.34 ~ 42 1
91 Cl Kron 38 OpC 00 57 48 -73 25.3           ~ 16 0
92 OGLE-CL SMC 111 Cl* 00 57 50.23 -72 56 36.9           ~ 12 0
93 OGLE-CL SMC 227 Cl* 00 57 50.23 -72 26 23.6           ~ 13 0
94 HW 34 Cl* 00 57 51.06 -73 32 27.4 17.78 17.13 16.00   14.85 ~ 12 0
95 OGLE-CL SMC 112 Cl* 00 57 57.14 -72 26 42.0           ~ 12 0
96 OGLE-CL SMC 228 Cl* 00 58 19.42 -72 17 56.6           ~ 12 0
97 DEM S 95 Em* 00 58 20.1 -72 40 10   14.34       ~ 27 0
98 HW 35 Cl* 00 58 42 -73 35.0           ~ 9 0
99 HW 36 Cl* 00 59 03.43 -73 50 24.6 17.49 17.10 16.47   15.67 ~ 10 0
100 HW 37 Cl* 00 59 14.83 -71 46 08.9 13.58 13.48 13.45   13.05 ~ 12 0
101 Bruck 96 Cl* 00 59 15.32 -72 36 27.8 14.47 14.52 14.26   13.88 ~ 16 0
102 HW 38 Cl* 00 59 25.42 -73 49 01.2 16.86 16.40 15.73   15.01 ~ 14 0
103 Bruck 97 Cl* 00 59 37 -71 44.7           ~ 5 0
104 IC 1611 OpC 00 59 48.73 -72 20 01.4 12.14 12.26 11.96   11.33 ~ 35 0
105 OGLE-CL SMC 119 Cl* 00 59 56.87 -72 22 24.4           ~ 17 0
106 IC 1612 OpC 01 00 00.26 -72 22 18.2 12.59 12.84 12.31   11.33 ~ 31 0
107 Bruck 100 Cl* 01 00 23 -72 05.1           ~ 9 0
108 HW 40 Cl* 01 00 25.11 -71 17 43.8 16.07 15.96 15.18   14.19 ~ 26 0
109 Bruck 99 Cl* 01 00 30.52 -73 05 14.4 14.39 14.19 13.78   13.14 ~ 21 0
110 OGLE-CL SMC 230 Cl* 01 00 32.28 -72 15 30.7 17.69 16.46 15.55   14.31 ~ 17 0
111 OGLE-CL SMC 124 Cl* 01 00 33.87 -72 21 50.8 12.25 12.71 12.54   12.03 ~ 28 0
112 HW 41 Cl* 01 00 34.50 -71 27 38.0 14.96 15.03 14.28   13.38 ~ 19 0
113 [RZ2005] 126 OpC 01 00 49.42 -73 20 57.0 13.60 13.56 13.18   12.47 ~ 17 0
114 OGLE-CL SMC 231 Cl* 01 00 58.19 -72 32 24.9           ~ 10 0
115 Bruck 103 Cl* 01 01 00.12 -73 09 22.2 14.74 14.67 14.46   13.56 ~ 11 0
116 OGLE-CL SMC 126 Cl* 01 01 00.39 -72 44 59.6 14.24 14.54 14.32   13.96 ~ 20 0
117 HW 43 Cl* 01 01 07.13 -71 45 14.0 14.68 14.36 14.26   13.87 ~ 14 0
118 OGLE-CL SMC 232 Cl* 01 01 13.58 -72 33 03.5           ~ 9 0
119 [BS95] 102 Cl* 01 01 14 -73 47.8           ~ 6 0
120 OGLE-CL SMC 127 Cl* 01 01 17.78 -72 13 42.3           ~ 13 0
121 HW 44 Cl* 01 01 22 -73 47.2           ~ 11 0
122 Bruck 105 Cl* 01 01 37.53 -72 24 23.1 14.14 14.60 14.60   14.64 ~ 16 0
123 OGLE-CL SMC 129 Cl* 01 01 44.80 -72 33 51.2 11.12 11.50 11.47   11.38 ~ 28 0
124 Bruck 108 Cl* 01 01 52.62 -72 10 56.7 15.26 15.46 15.50   15.07 ~ 15 0
125 Bruck 111 Cl* 01 02 02.77 -71 01 14.3 17.49 17.01 16.17   15.11 ~ 12 0
126 Cl Kron 44 OpC 01 02 06.34 -73 55 22.7 14.05 13.73 12.95   11.82 ~ 45 0
127 NGC 361 OpC 01 02 11.11 -71 36 25.3 12.86 12.43 11.77   10.70 ~ 105 0
128 OGLE-CL SMC 132 Cl* 01 02 13.13 -72 57 58.5 14.90 14.98 14.37   13.27 ~ 11 0
129 [RZ2005] 140 Cl* 01 02 42.69 -71 28 52.9 14.38 14.51 14.05   13.35 ~ 3 0
130 NAME Cl Lindsay 69W Cl* 01 02 45.0 -73 44 19           ~ 5 0
131 Bruck 113 Cl* 01 02 55.75 -73 20 18.6 18.04 15.60 14.21   13.20 ~ 12 0
132 OGLE-CL SMC 134 OpC 01 03 11.53 -72 16 23.5 12.94 13.40 13.56   13.61 ~ 30 0
133 OGLE-CL SMC 137 Cl* 01 03 21.86 -72 39 08.1 12.46 13.06 13.10   13.23 ~ 17 0
134 NGC 376 Cl* 01 03 50.21 -72 49 33.5 10.83 11.16 10.90   10.17 ~ 57 0
135 Bruck 117 Cl* 01 04 12.92 -73 15 40.1 14.77 14.68 14.30   13.55 ~ 8 0
136 Bruck 119 Cl* 01 04 19 -73 09.9           ~ 7 0
137 Bruck 122 Cl* 01 04 24.34 -71 42 46.5 15.26 14.93 14.94   14.99 ~ 8 0
138 Bruck 121 Cl* 01 04 30.49 -72 37 06.4 14.24 14.46 14.12   13.64 ~ 17 0
139 ESO 51-15 OpC 01 04 36.20 -72 09 36.7 11.64 12.14 12.26   12.48 ~ 29 0
140 HW 48 Cl* 01 04 59.50 -73 38 17.0 14.64 14.83 14.71   14.56 ~ 11 0
141 NAME SMC Bar PoG 01 05 -72.6           ~ 264 0
142 Bruck 124 Cl* 01 05 02.66 -73 02 32.7           ~ 11 0
143 IC 1624 Cl* 01 05 21.892 -72 02 33.31 12.56 12.60 12.42   11.98 ~ 34 0
144 [BS95] 128 Cl* 01 05 34 -73 29.2           ~ 7 0
145 Bruck 128 Cl* 01 05 51.42 -71 57 07.6 15.31 15.15 14.29   13.59 ~ 11 0
146 OGLE-CL SMC 150 Cl* 01 06 02.41 -72 20 30.8 13.11 13.67 13.37   12.77 ~ 11 0
147 HW 50 Cl* 01 06 03 -71 42.7           ~ 10 0
148 IC 1626 OpC 01 06 14.55 -73 17 51.0 14.16 14.01 13.82   13.40 ~ 16 0
149 ESO 29-31 OpC 01 06 47.31 -72 16 23.7 11.88 12.29 11.47   9.99 ~ 24 0
150 HW 52 Cl* 01 06 56.28 -73 14 09.1 14.06 14.14 13.97   13.74 ~ 13 0
151 HW 53 Cl* 01 07 00.73 -73 34 36.6 17.36 17.30 16.67   16.00 ~ 13 0
152 [BS95] 138 As* 01 07 14.93 -72 05 57.2 13.40 13.56 12.96   11.78 ~ 8 0
153 HW 54 Cl* 01 07 16.0 -72 06 07           ~ 7 0
154 HW 55 Cl* 01 07 20.76 -73 22 37.5 15.91 15.24 14.67   14.05 ~ 17 0
155 OGLE-CL SMC 155 OpC 01 07 27.87 -72 29 36.5 13.86 14.25 14.08   13.72 ~ 19 0
156 OGLE-CL SMC 156 Cl* 01 07 29.50 -72 46 05.4 12.87 13.09 12.94   12.51 ~ 24 0
157 OGLE-CL SMC 157 Cl* 01 07 32.56 -73 07 17.1 14.24 14.11 13.76   13.47 ~ 23 0
158 NGC 416 Cl* 01 07 59.03 -72 21 20.5 12.73 12.55 11.76   10.71 ~ 156 1
159 [RZ2005] 173 OpC 01 08 13.77 -73 15 27.0 14.81 14.42 13.97   12.83 ~ 19 0
160 NGC 419 OpC 01 08 17.26 -72 53 01.8 11.41 11.16 10.50   9.34 ~ 287 0
161 HW 59 Cl* 01 08 54.0 -73 14 30           ~ 10 0
162 OGLE-CL SMC 161 OpC 01 09 03.68 -73 05 13.8 14.44 14.42 13.96   13.15 ~ 19 0
163 HW 61 Cl* 01 09 44.61 -72 17 47.7           ~ 12 0
164 [BS95] 276 Cl* 01 10 05.20 -72 44 15.5 14.32 14.34 14.09   13.56 ~ 9 0
165 Bruck 137 Cl* 01 10 30 -72 57.4           ~ 7 0
166 [RZ2005] 185 OpC 01 10 48.07 -72 47 35.9 14.04 14.17 13.81   13.36 ~ 18 0
167 IC 1662 Cl* 01 12 33.33 -73 27 22.6 13.93 14.18 14.03   13.73 ~ 14 0
168 Cl Lindsay 93 Cl* 01 12 49.05 -73 28 28.4 15.84 15.72 14.99   14.12 ~ 12 0
169 [RZ2005] 194 Cl* 01 12 51.74 -73 07 10.9 14.66 14.52 13.80   12.83 ~ 26 0
170 HW 68 Cl* 01 13 52 -73 25.0           ~ 9 0
171 HW 74 Cl* 01 16 48 -73 09.6           ~ 9 0
172 HW 78 Cl* 01 21 21 -73 05.7           ~ 8 0
173 HW 82 Cl* 01 24 28 -73 10.3           ~ 13 1
174 Bruck 165 Cl* 01 30 50 -73 26.1           ~ 7 0
175 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
176 OGLE-CL SMC 283 Cl* 01 34 40 -73 16.3           ~ 6 0
177 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
178 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
179 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 723 2
180 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
181 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
182 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
183 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
184 NAME Local Group GrG ~ ~           ~ 9325 0

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