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Dynamical Evolution of the Mass Function of the Galactic Globular Cluster System

Published online by Cambridge University Press:  01 September 2007

Jihye Shin ,
Sungsoo S. Kim  and
Koji Takahashi
Jihye Shin
Affiliation:
Dept. of Astronomy and Space Science, Kyung Hee University, Korea email: jhshin@ap1.khu.ac.kr
Sungsoo S. Kim
Affiliation:
Dept. of Astronomy and Space Science, Kyung Hee University, Korea email: jhshin@ap1.khu.ac.kr
Koji Takahashi
Affiliation:
Dept. of Informational Society Studies, Saitama Institude of Technology, Japan
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Abstract

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Using the most advanced anisotropic (2D) Fokker-Planck (FP) models, we calculate the evolution of the mass functions of the Galactic globular cluster system (GCMF). Our models include two-body relaxation, binary heating, tidal shocks, dynamical friction, stellar evolution, and realistic cluster orbits. We perform 2D-FP simulations for a large number of virtual globular clusters and synthesize these results to study the relation between the initial and present GCMFs. We found two probable IGCMFs that eventually evolve into the Milky Way GCMF : truncated power-law, and log-normal model with higher initial low mass limit and peak mass than the earlier studies.

Keywords

Globular ClustersFokker-Planck method
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 433 - 434
Copyright
Copyright © International Astronomical Union 2008

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