Evolution of star clusters with a mass distribution of binaries
Abstract
The dynamical evolution of star clusters with an initial population of binaries strongly depends on the parameters of the bounded pairs. The authors performed computational simulation with direct Nbody codes, on models with N = 300 objects, with initial fraction of 20% of binaries with the same orbital semiaxis and with a Salpeter mass spectrum. The results are compared with previous analysis on similar equalmass star models. The calculation points out that binaries with different mass companions determine an enhanced and sudden expansion of the system with neither core collapse nor central mass segregation.
 Publication:

Nuovo Cimento C Geophysics Space Physics C
 Pub Date:
 December 1984
 DOI:
 10.1007/BF02573808
 Bibcode:
 1984NCimC...7..856G
 Keywords:

 Binary Stars;
 Computational Astrophysics;
 Mass Distribution;
 Star Clusters;
 Stellar Evolution;
 Stellar Mass;
 Gravitational Collapse;
 Many Body Problem;
 Orbital Elements;
 Stellar Models