2001MNRAS.325..792P

Query : 2001MNRAS.325..792P

2001MNRAS.325..792P - Mon. Not. R. Astron. Soc., 325, 792-802 (2001/August-1)

Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud.

PIATTI A.E., SANTOS J.F.C.Jr, CLARIA J.J., BICA E., SARAJEDINI A. and GEISLER D.

Abstract (from CDS):

Colour-magnitude diagrams are presented for the first time for L32, L38, K28 (L43), K44 (L68) and L116, which are clusters projected on to the outer parts of the Small Magellanic Cloud (SMC). The photometry was carried out in the Washington system C and T1 filters, allowing the determination of ages by means of the magnitude difference between the red giant clump and the main-sequence turn-off, and metallicities from the red giant branch locus. The clusters have ages in the range 2-6Gyr, and metallicities in the range -1.65<[Fe/H]←1.10, increasing the sample of intermediate-age clusters in the SMC. L116, the outermost cluster projected on to the SMC, is a foreground cluster, and somewhat closer to us than the Large Magellanic Cloud. Our results, combined with those for other clusters in the literature, show epochs of sudden chemical enrichment in the age-metallicity plane, which favour a bursting star formation history as opposed to a continuous one for the SMC.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): techniques: photometric - Magellanic Clouds - galaxies: star clusters

Simbad objects: 34

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Number of rows : 34
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 Cl Lindsay 1 Cl* 00 03 53.50 -73 28 15.0   11.7       ~ 125 0
2 ESO 28-19 Cl* 00 24 45.98 -72 47 37.9   11.6 12.05     ~ 152 0
3 NGC 121 GlC 00 26 49.0 -71 32 10   11.2 11.24     ~ 330 0
4 ESO 51-2 Cl* 00 47 24 -68 55.2           ~ 26 0
5 ESO 51-3 Cl* 00 48 50 -69 52.2   16.2       ~ 57 0
6 Cl Kron 28 OpC 00 51 39.55 -71 59 56.6 10.98 10.56 10.42   10.04 ~ 34 0
7 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
8 NGC 339 OpC 00 57 47.62 -74 28 14.6 13.23 12.94 12.21   11.20 ~ 157 0
9 Cl Kron 44 OpC 01 02 06.34 -73 55 22.7 14.05 13.73 12.95   11.82 ~ 45 0
10 NGC 361 OpC 01 02 11.11 -71 36 25.3 12.86 12.43 11.77   10.70 ~ 105 0
11 NGC 416 Cl* 01 07 59.03 -72 21 20.5 12.73 12.55 11.76   10.71 ~ 156 1
12 Cl Lindsay 113 Cl* 01 49 30.0 -73 43 40   11.9       ~ 97 0
13 ESO 13-25 Cl* 01 55 33 -77 39.3           ~ 21 0
14 NGC 1466 GlC 03 44 32.71 -71 40 18.0   11.6 11.59     ~ 166 0
15 NAME Ret GlC 04 36 10.15 -58 51 34.8   14.00 14.25 13.50   ~ 177 1
16 NGC 1841 GlC 04 45 24.38 -83 59 53.3   12.23 11.43     ~ 190 0
17 NGC 1754 Cl* 04 54 18.080 -70 26 32.58   12.32 11.57     ~ 96 0
18 NGC 1786 Cl* 04 59 07.470 -67 44 45.44   10.1       ~ 152 0
19 NGC 1835 Cl* 05 05 09.210 -69 24 20.96   11.314 10.596     ~ 173 0
20 NGC 1898 As* 05 16 45.380 -69 39 16.76   12.62 11.86     ~ 104 0
21 NGC 1916 Cl* 05 18 37.87 -69 24 22.9   11.16 10.38     ~ 94 0
22 NGC 1928 Cl* 05 20 55.940 -69 28 34.96   13.34 12.47     ~ 68 0
23 NGC 1939 Cl* 05 21 26.82 -69 56 59.0   12.52 11.83     ~ 61 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
25 NGC 2005 Cl* 05 30 08.500 -69 45 14.42   12.30 11.57     ~ 103 0
26 NGC 2019 Cl* 05 31 56.48 -70 09 32.5   10.9 10.86     ~ 124 0
27 ESO 86-22 Cl* 05 42 29.090 -65 21 46.33     13.8     ~ 44 0
28 NGC 2121 Cl* 05 48 13.190 -71 28 52.00   13.21 12.37     ~ 134 0
29 NGC 2155 Cl* 05 58 32.070 -65 28 38.62   13.41 12.60     ~ 107 0
30 ESO 121-3 Cl* 06 02 03.32 -60 31 25.6   14.91 14.04     ~ 118 0
31 NGC 2210 GlC 06 11 31.296 -69 07 17.04   10.9 10.94     ~ 196 0
32 NAME Hodge 11 GlC 06 14 22.92 -69 50 54.9   12.57 11.93     ~ 117 0
33 NGC 2257 Cl* 06 30 12.62 -64 19 40.0   13.24 12.62     ~ 228 0
34 KMHK 1762 Cl* 07 07 39 -69 59.0           ~ 25 0

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