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Pre-Collapse Evolution of Galactic Globular Clusters

Published online by Cambridge University Press:  25 May 2016

Toshiyuki Fukushige  and
Douglas C. Heggie
Toshiyuki Fukushige
Affiliation:
College of Arts and Science, University of Tokyo
Douglas C. Heggie
Affiliation:
University of Edinburgh

Abstract

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We investigated collisionless aspects of the early evolution of model star clusters. The effects of mass loss through stellar evolution and of a steady tidal field are modelled using N-body simulations. Our results (which depend on the assumed initial structure and the mass spectrum) agree qualitatively with those of Chernoff & Weinberg (1990), who used a Fokker-Planck model with a spherically symmetric tidal cutoff. For those systems which are disrupted, the lifetime to disruption generally exceeds that found by Chernoff & Weinberg, sometimes by as much as an order of magnitude.

Type
Stellar Dynamics, Models
Information
Symposium - International Astronomical Union , Volume 174: Dynamical Evolution of Stars Clusters , 1996 , pp. 365 - 366
Copyright
Copyright © Kluwer 1996 

References

Chernoff, D. F., and Weinberg, M. D., 1990, ApJ, 351, 121.Google Scholar
Fukushige, T., and Heggie, D. C., 1995, MNRAS, 276, 206.Google Scholar
Okumura, T., Makino, J., Ebisuzaki, T., Fukushige, T., Ito, T., Sugimoto, D., Hashimoto, E., Tomida, K., and Miyakawa, N., 1993, PASJ, 45, 329.Google Scholar