Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74...57a&link_type=abstract
Astronomy and Astrophysics, vol. 74, no. 1, Apr. 1979, p. 57-61.
Astronomy and Astrophysics
Astrophysics
13
Astronomical Models, Globular Clusters, Star Distribution, Stellar Motions, Graphs (Charts), Stellar Luminosity
Scientific paper
The dynamic evolution of a 500,000-solar mass cluster consisting of five stellar mass groups is computed. The star masses chosen represent mean values in the ranges from 0.15 to 0.5 solar mass, 0.5 to 0.79 solar mass, 0.79 to 0.81 solar mass, 0.81 to 1.4 solar masses, and 1.4 to 4.0 solar masses. Mass ejection from the more massive stars is allowed for at the appropriate ages according to evolutionary stellar models, and a well-defined chemical composition in the range appropriate to Population II stars is taken into account. The cluster model at 19.259 billion years is compared with observations of globular clusters. It is found that some features of this model are similar to those of the globular cluster M3, particularly the total mass, tidal radius, core radius, luminosity function, and M/L ratio.
Angeletti Lucio
Giannone Pietro
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