2016MNRAS.461..519P

Query : 2016MNRAS.461..519P

2016MNRAS.461..519P - Mon. Not. R. Astron. Soc., 461, 519-541 (2016/September-1)

Physical properties of star clusters in the outer LMC as observed by the DES.

PIERES A., SANTIAGO B., BALBINOT E., LUQUE E., QUEIROZ A., DA COSTA L.N., MAIA M.A.G., DRLICA-WAGNER A., ROODMAN A., ABBOTT T.M.C., ALLAM S., BENOIT-LEVY A., BERTIN E., BROOKS D., BUCKLEY-GEER E., BURKE D.L., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., CUNHA C.E., DESAI S., DIEHL H.T., EIFLER T.F., FINLEY D.A., FLAUGHER B., FOSALBA P., FRIEMAN J., GERDES D.W., GRUEN D., GRUENDL R.A., GUTIERREZ G., HONSCHEID K., JAMES D.J., KUEHN K., KUROPATKIN N., LAHAV O., LI T.S., MARSHALL J.L., MARTINI P., MILLER C.J., MIQUEL R., NICHOL R.C., NORD B., OGANDO R., PLAZAS A.A., ROMER A.K., SANCHEZ E., SCARPINE V., SCHUBNELL M., SEVILLA-NOARBE I., SMITH R.C., SOARES-SANTOS M., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G., THALER J., THOMAS D., TUCKER D.L. and WALKER A.R.

Abstract (from CDS):

The Large Magellanic Cloud (LMC) harbours a rich and diverse system of star clusters, whose ages, chemical abundances and positions provide information about the LMC history of star formation. We use Science Verification imaging data from the Dark Energy Survey (DES) to increase the census of known star clusters in the outer LMC and to derive physical parameters for a large sample of such objects using a spatially and photometrically homogeneous data set. Our sample contains 255 visually identified cluster candidates, of which 109 were not listed in any previous catalogue. We quantify the crowding effect for the stellar sample produced by the DES Data Management pipeline and conclude that the stellar completeness is <10 per cent inside typical LMC cluster cores. We therefore reanalysed the DES co-add images around each candidate cluster and remeasured positions and magnitudes for their stars. We also implement a maximum-likelihood method to fit individual density profiles and colour-magnitude diagrams. For 117 (from a total of 255) of the cluster candidates (28 uncatalogued clusters), we obtain reliable ages, metallicities, distance moduli and structural parameters, confirming their nature as physical systems. The distribution of cluster metallicities shows a radial dependence, with no clusters more metal rich than [Fe/H] ≃ -0.7 beyond 8 kpc from the LMC centre. The age distribution has two peaks at ≃1.2 and ≃2.7 Gyr.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: statistical - Magellanic Cloud - galaxies: star clusters: general - galaxies: star clusters: general

Nomenclature: Table A: [PSB2016] DES001NN (Nos 1-28).

Simbad objects: 122

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Number of rows : 122
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11152 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7067 0
3 NAME Ret GlC 04 36 10.15 -58 51 34.8   14.00 14.25 13.50   ~ 163 1
4 NGC 1755 Cl* 04 55 16.390 -68 12 23.12   10.00 9.85     ~ 77 0
5 ESO 85-21 Cl* 04 57 22.18 -62 32 08.2           ~ 21 0
6 [PSB2016] DES001SC1 Cl* 05 03 16.37 -64 01 47.1           ~ 1 0
7 ESO 85-41 Cl* 05 05 24.36 -63 17 15.1           ~ 8 0
8 ESO 85-45 Cl* 05 07 03.86 -63 38 51.7           ~ 7 0
9 ESO 119-40 Cl* 05 09 21.67 -62 22 46.9   14.98 14.25     ~ 22 0
10 KMHK 597 Cl* 05 09 53.94 -63 38 17.8           ~ 7 0
11 [PSB2016] DES001SC2 Cl* 05 10 50.31 -64 31 43.7           ~ 1 0
12 BSDL 818 Cl* 05 11 42.03 -64 39 11.6           ~ 3 0
13 KMHK 644 Cl* 05 12 20.62 -64 18 13.8           ~ 6 0
14 [PSB2016] DES001SC3 Cl* 05 12 24.49 -64 01 40.0           ~ 1 0
15 NGC 1868 GlC 05 14 36.60 -63 57 25.7   12.02 11.57     ~ 121 0
16 ESO 119-50 Cl* 05 16 41.64 -62 01 26.1           ~ 6 0
17 ESO 85-63 Cl* 05 17 32.25 -63 25 14.6   14.43 13.65     ~ 14 0
18 H88 257 Cl* 05 17 48.95 -64 02 41.0           ~ 3 0
19 [H80b] 4-7 Cl* 05 17 51.66 -63 47 42.4           ~ 5 0
20 KMHK 730 Cl* 05 18 38.29 -64 06 43.8           ~ 7 0
21 NGC 1900 Cl* 05 18 57.78 -63 01 26.8   13.95 13.59     ~ 15 0
22 ESO 85-72 Cl* 05 20 05.61 -63 28 49.2   14.58 13.85     ~ 28 0
23 KMHK 782 Cl* 05 20 38.88 -63 08 06.0           ~ 7 0
24 KMHK 791 Cl* 05 20 50.25 -64 00 14.1           ~ 9 0
25 KMHK 815 Cl* 05 21 58.18 -64 35 56.4           ~ 4 0
26 NAME LMC Bar PoG 05 22 08 -69 23.5           ~ 310 0
27 ESO 119-61 Cl* 05 22 35.42 -61 52 45.9           ~ 11 0
28 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17438 0
29 [PSB2016] DES001SC4 Cl* 05 24 31.72 -64 19 31.5           ~ 1 0
30 KMHK 854 Cl* 05 24 40.93 -63 12 12.7           ~ 6 0
31 NGC 1942 Cl* 05 24 43.14 -63 56 21.7   14.24 13.46     ~ 14 0
32 ESO 85-82 Cl* 05 24 59.71 -63 02 54.6           ~ 9 0
33 KMHK 878 Cl* 05 25 34.78 -64 45 29.2           ~ 4 0
34 BSDL 1630 Cl* 05 26 08.95 -64 33 57.5           ~ 6 0
35 BSDL 1735 Cl* 05 27 15.93 -64 15 41.3           ~ 3 0
36 [PSB2016] DES001SC5 Cl* 05 27 41.28 -64 48 26.2           ~ 1 0
37 KMHK 918 Cl* 05 27 47.04 -64 38 59.9           ~ 6 0
38 [PSB2016] DES001SC8 Cl* 05 27 53.64 -64 10 31.5           ~ 1 0
39 KMHK 938 Cl* 05 28 43.77 -64 40 48.4           ~ 4 0
40 [PSB2016] DES001SC7 Cl* 05 28 45.29 -64 03 31.1           ~ 1 0
41 KMHK 947 OpC 05 29 01.05 -64 17 19.7           ~ 5 0
42 [PSB2016] DES001SC6 Cl* 05 29 29.26 -63 04 59.9           ~ 1 0
43 ESO 85-91 Cl* 05 29 48.11 -63 38 59.2   13.96 13.23     ~ 25 0
44 KMHK 959 Cl* 05 29 48.88 -64 26 19.8           ~ 6 0
45 ESO 85-92 Cl* 05 30 08.17 -63 25 36.7   14.34 13.75     ~ 12 0
46 KMHK 973 Cl* 05 30 22.48 -64 01 03.9           ~ 9 0
47 NGC 1997 Cl* 05 30 34.44 -63 12 17.2   14.27 13.43     ~ 23 0
48 ESO 86-5 Cl* 05 31 07.34 -63 32 25.8   14.39 13.66     ~ 14 0
49 OHSC 20 Cl* 05 31 20.01 -63 40 13.7           ~ 6 0
50 LW 230 Cl* 05 31 23.43 -63 15 41.3           ~ 7 0
51 [PSB2016] DES001SC10 Cl* 05 31 25.53 -63 27 12.8           ~ 1 0
52 KMHK 1003 Cl* 05 31 34.46 -63 53 13.7           ~ 9 0
53 [PSB2016] DES001SC9 Cl* 05 31 49.64 -63 19 21.1           ~ 1 0
54 NAME Hodge 4 GlC 05 32 25.64 -64 44 07.7     13.33     ~ 49 0
55 [PSB2016] DES001SC12 Cl* 05 33 21.65 -63 35 46.7           ~ 1 0
56 [PSB2016] DES001SC13 Cl* 05 33 37.07 -63 04 18.8           ~ 1 0
57 [PSB2016] DES001SC16 Cl* 05 34 48.35 -62 25 22.6           ~ 1 0
58 KMHK 1089 Cl* 05 34 51.41 -63 37 57.1           ~ 7 0
59 [PSB2016] DES001SC11 Cl* 05 35 04.91 -63 32 20.2           ~ 1 0
60 [PSB2016] DES001SC14 Cl* 05 35 12.82 -64 37 07.7           ~ 1 0
61 NAME E 2 Cl* 05 36 21.63 -61 47 19.0           ~ 15 0
62 KMHK 1129 Cl* 05 36 37.99 -64 23 10.6           ~ 5 0
63 KMHK 1127 Cl* 05 36 46.10 -62 53 03.5           ~ 8 0
64 [PSB2016] DES001SC15 Cl* 05 38 17.33 -64 30 21.5           ~ 1 0
65 KMHK 1168 Cl* 05 38 53.22 -64 17 31.8           ~ 5 0
66 [PSB2016] DES001SC17 Cl* 05 38 58.97 -62 27 24.2           ~ 1 0
67 [PSB2016] DES001SC20 Cl* 05 39 11.75 -62 35 09.5           ~ 1 0
68 KMHK 1195 Cl* 05 40 23.23 -64 14 54.0           ~ 4 0
69 KMHK 1198 Cl* 05 40 31.52 -64 17 54.5           ~ 5 0
70 [PSB2016] DES001SC19 Cl* 05 40 34.66 -63 06 01.2           ~ 1 0
71 [PSB2016] DES001SC18 Cl* 05 40 41.43 -63 49 07.4           ~ 1 0
72 KMHK 1214 Cl* 05 41 09.24 -63 46 16.8           ~ 9 0
73 BSDL 2771 Cl* 05 41 27.94 -63 07 56.7           ~ 4 0
74 [PSB2016] DES001SC22 Cl* 05 41 53.98 -62 21 41.6           ~ 1 0
75 KMHK 1241 Cl* 05 42 25.74 -62 30 06.1           ~ 6 0
76 [PSB2016] DES001SC21 Cl* 05 43 03.44 -62 31 43.0           ~ 1 0
77 KMHK 1269 Cl* 05 43 12.28 -63 37 02.2           ~ 7 0
78 KMHK 1265 Cl* 05 43 12.38 -62 28 14.5           ~ 6 0
79 ESO 86-25 Cl* 05 43 13.99 -62 50 02.1           ~ 9 0
80 KMHK 1278 Cl* 05 43 28.50 -63 24 53.2           ~ 6 0
81 KMHK 1286 Cl* 05 43 55.57 -63 22 24.3           ~ 8 0
82 KMHK 1290 Cl* 05 44 04.23 -63 55 28.8           ~ 9 0
83 NGC 2097 Cl* 05 44 07.08 -62 47 00.6   14.05 13.67     ~ 13 0
84 KMHK 1310 Cl* 05 44 34.29 -65 00 06.2           ~ 6 0
85 KMHK 1318 Cl* 05 45 06.73 -63 40 34.4           ~ 8 0
86 KMHK 1322 Cl* 05 45 09.36 -64 47 50.6           ~ 4 0
87 KMHK 1324 Cl* 05 45 14.98 -64 46 20.8           ~ 6 0
88 ESO 56-30 Cl* 05 45 33.88 -63 42 56.6           ~ 9 0
89 BSDL 2976 Cl* 05 46 58.55 -63 51 50.1           ~ 4 0
90 OHSC 26 Cl* 05 47 23.65 -62 37 19.7           ~ 5 0
91 KMHK 1373 Cl* 05 47 46.86 -65 00 40.1           ~ 6 0
92 KMHK 1381 Cl* 05 48 09.22 -63 35 54.4           ~ 6 0
93 [PSB2016] DES001SC23 Cl* 05 48 47.19 -65 09 09.1           ~ 1 0
94 KMHK 1388 Cl* 05 48 53.29 -64 37 59.2           ~ 6 0
95 KMHK 1390 Cl* 05 48 58.86 -64 44 00.9           ~ 6 0
96 KMHK 1391 Cl* 05 49 01.97 -64 20 54.2           ~ 4 0
97 KMHK 1393 Cl* 05 49 02.58 -65 00 43.6           ~ 6 0
98 KMHK 1399 Cl* 05 49 20.29 -63 08 04.9           ~ 9 0
99 KMHK 1417 Cl* 05 50 07.93 -64 09 12.7           ~ 6 0
100 NGC 2120 Cl* 05 50 35.04 -63 40 31.7   13.31 12.67     ~ 13 0
101 KMHK 1439 Cl* 05 51 05.50 -64 11 14.7           ~ 5 0
102 KMHK 1447 Cl* 05 51 21.78 -62 59 31.7           ~ 6 0
103 KMHK 1455 Cl* 05 51 45.17 -63 51 56.2           ~ 7 0
104 KMHK 1469 Cl* 05 52 29.42 -63 36 02.3           ~ 7 0
105 KMHK 1484 Cl* 05 53 11.62 -63 48 24.9           ~ 5 0
106 ESO 86-38 Cl* 05 53 53.71 -63 36 55.6           ~ 9 0
107 [PSB2016] DES001SC26 Cl* 05 54 14.21 -65 08 51.1           ~ 1 0
108 [PSB2016] DES001SC25 Cl* 05 54 37.00 -64 53 13.8           ~ 1 0
109 KMHK 1518 Cl* 05 55 06.84 -64 39 10.2           ~ 5 0
110 OHSC 28 Cl* 05 55 35.28 -62 20 42.9           ~ 9 0
111 BSDL 3181 Cl* 05 55 53.01 -65 17 35.2           ~ 3 0
112 KMHK 1530 Cl* 05 56 08.19 -63 38 34.0           ~ 5 0
113 [PSB2016] DES001SC24 Cl* 05 56 19.85 -64 43 03.2           ~ 1 0
114 BSDL 3189 Cl* 05 57 32.27 -65 20 35.9           ~ 5 0
115 KMHK 1548 Cl* 05 57 35.32 -64 59 54.2           ~ 5 0
116 KMHK 1556 Cl* 05 58 12.03 -63 53 40.2           ~ 5 0
117 [PSB2016] DES001SC27 Cl* 05 58 25.93 -64 35 41.2           ~ 1 0
118 NGC 2162 GlC 06 00 30.21 -63 43 18.2   13.38 12.70     ~ 78 0
119 KMHK 1593 Cl* 06 01 52.02 -64 07 58.5           ~ 5 0
120 ESO 121-3 Cl* 06 02 03.32 -60 31 25.6   14.91 14.04     ~ 114 0
121 [PSB2016] DES001SC28 Cl* 06 03 19.18 -64 49 53.0           ~ 1 0
122 NGC 2193 Cl* 06 06 17.31 -65 05 55.5   14.13 13.42     ~ 47 0

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