Abstract
view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Escape Rates from Star Clusters. King, Ivan R. Abstract Cluster models have been calculated on the basis of steady-state velocity distributions. The models are finite in extent (because of the effect of galactic tidal forces) and contain a realistic mixture of five different stellar types. They can be fitted to star counts in actual clusters, and the fitting then gives values for relaxation times and escape rates. Escape rates depend in a well-known way on the mass of a cluster and its radius, but they also depend strongly on the central concentration. Low-mass stars escape only a little faster than those of average mass. In some globular clusters the loss of stars in 1010 yr has been appreciable. In galactic clusters the loss rate is of course much faster; its past history depends strongly on changes in the cluster radius, caused by evolutionary mass loss and external forces. Publication: The Astronomical Journal Pub Date: 1965 DOI: 10.1086/109536 Bibcode: 1965AJ.....70Q.324K full text sources ADS |
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