2007MNRAS.381L..84P

Query : 2007MNRAS.381L..84P

2007MNRAS.381L..84P - Mon. Not. R. Astron. Soc., 381, L84-L88 (2007/October-2)

Two newly identified, relatively old star clusters in the Small Magellanic Cloud.

PIATTI A.E., SARAJEDINI A., GEISLER D., GALLART C. and WISCHNJEWSKY M.

Abstract (from CDS):

We present the results on the age and metallicity estimates of the Small Magellanic Cloud (SMC) clusters L110, L112 and L113 obtained from CCD Washington CT1photometry. We confirm L113 as a relatively old and metal-poor cluster, and report for the first time that L110 and 112 are also relatively old clusters (t ∼ 6.5 Gyr). Their derived ages and metallicities reinforce previous suggestions that the farther a cluster is from the centre of the galaxy, the older and more metal-poor it is, with some dispersion. In addition, the bursting star formation model still appears to be the most probable paradigm to describe the SMC's star formation history. We call attention to a second possible burst at ∼6-7 Gyr, besides the known burst at ∼3 Gyr.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

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

VizieR on-line data: <Available at CDS (J/MNRAS/381/L84): table2.dat table3.dat table4.dat>

Nomenclature: Table 2: Cl* Lindsay 110 PSG NNNN (Nos 1-3570). Table 3: Cl* Lindsay 112 PSG NNN (Nos 1-641). Table 4: Cl* Lindsay 113 PSG NNNN (Nos 1-2401).

Simbad objects: 15

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Number of rows : 15
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
7 NGC 339 OpC 00 57 47.62 -74 28 14.6 13.23 12.94 12.21   11.20 ~ 157 0
8 NGC 361 OpC 01 02 11.11 -71 36 25.3 12.86 12.43 11.77   10.70 ~ 105 0
9 NGC 416 Cl* 01 07 59.03 -72 21 20.5 12.73 12.55 11.76   10.71 ~ 156 1
10 ESO 29-48 Cl* 01 34 26 -72 52.5   14.3       ~ 34 0
11 Cl Lindsay 112 Cl* 01 36 01 -75 27.5   16.2       ~ 29 0
12 Cl Lindsay 113 Cl* 01 49 30.0 -73 43 40   11.9       ~ 97 0
13 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
14 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
15 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0

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