Dynamical Evolution of Clusters with Two Stellar Groups
Abstract
The generalization of the fluid-dynamical approach from one-component star clusters to clusters with several stellar groups (as far as the star masses are concerned) has been applied to the study of two-component clusters. Rather extreme values of stellar masses and masses of groups were chosen in order to emphasize the different dynamical evolutions and asymptotic behaviours. Escape of stars from clusters and the problem of equipartition of kinetic energy among the two star groups are discussed. Comparisons of the main features of our results with those obtained by other authors have shown a good agreement. Some characteristic properties of the last computed models with an age of 18×109 yr have been pointed out and discussed in relation with some observed features of galactic globular clusters.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- August 1977
- DOI:
- 10.1007/BF00641739
- Bibcode:
- 1977Ap&SS..50..311A
- Keywords:
-
- Astronomical Models;
- Galactic Evolution;
- Star Clusters;
- Stellar Motions;
- Asymptotic Methods;
- Dynamic Characteristics;
- Kinetic Energy;
- Stellar Mass;
- Stellar Models;
- Astrophysics