2007MNRAS.375.1077B

Query : 2007MNRAS.375.1077B

2007MNRAS.375.1077B - Mon. Not. R. Astron. Soc., 375, 1077-1086 (2007/March-1)

Extended star formation history of the star cluster NGC 2154 in the Large Magellanic Cloud.

BAUME G., CARRARO G., COSTA E., MENDEZ R.A. and GIRARDI L.

Abstract (from CDS):

The colour-magnitude diagram (CMD) of the intermediate-age Large Magellanic Cloud star cluster NGC 2154 and its adjacent field has been analysed using Padova stellar models to determine the cluster's fundamental parameters and its star formation history. Deep BR CCD photometry, together with synthetic CMDs and integrated luminosity functions, has allowed us to infer that the cluster experienced an extended star formation period of about 1.2 Gyr, which began approximately 2.3 Gyr ago and ended 1.1 Gyr ago. However, the physical reality of such a prolonged period of star formation is questionable, and could be the result of inadequacies in the stellar evolutionary tracks themselves. A substantial fraction of binaries (70 per cent) seems to exist in NGC 2154.

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

Journal keyword(s): stars: evolution - Magellanic Clouds - galaxies: star clusters - galaxies: stellar content

Simbad objects: 6

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Number of rows : 6
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 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
2 NGC 1818 GlC 05 04 13.300 -66 26 05.47           ~ 279 0
3 NGC 1866 GlC 05 13 38.920 -65 27 52.75           ~ 437 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 NGC 2154 Cl* 05 57 38 -67 15.7   12.47 11.79     ~ 60 0
6 NGC 2173 GlC 05 57 58 -72 58.7   12.74 11.88     ~ 148 0

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