Properties of young star clusters in M 31
- 1 March 1987
- journal article
- research article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 99 (613) , 173
- https://doi.org/10.1086/131973
Abstract
Integrated UBVR photometry is given for a selection of young star clusters and compact OB associations in M31. Most are very young and, except for those in the outer parts of the galaxy, most show significant reddening. The brightest have absolute magnitudes of Mv = -8.0 and very blue colors. Clusters in this sample also include objects as faint as Mv = -3.7. The oldest disk clusters in the sample have ages, estimated from their colors, of approximately 4×108years, and the youngest are only a few million years old. Comparison of the cluster luminosity function with that of the LMC suggests that present sampling of M31 disk clusters is very incomplete; there probably are at least 10,000 such clusters still undetected.Keywords
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