The Optical Gravitational Lensing Experiment. Age of Star Clusters from the SMC

Abstract

We present determination of age of clusters from 2.4 square degree region of the SMC bar. The photometric data were taken from the BVI maps of the SMC and catalog of clusters in this galaxy obtained during the OGLE-II microlensing survey. For 93 well populated SMC clusters their age is derived with the standard procedure of isochrone fitting. The distribution of age of cluster from the SMC is presented. It indicates either non-uniform process of cluster formation or very effective disruption of clusters.

9 pages, Latex+psfig. Acta Astronomica, 49, 157. Corrected coordinates and size of a few clusters in Table 1