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Picture of Abbas Askar

Abbas Askar

Postdoc

Picture of Abbas Askar

MOCCA-SURVEY Database I : Dissolution of tidally filling star clusters harboring black hole subsystem

Author

  • Mirek Giersz
  • Abbas Askar
  • Long Wang
  • Arkadiusz Hypki
  • Agostino Leveque
  • Rainer Spurzem

Summary, in English

We investigate the dissolution process of star clusters embedded in an external tidal field and harboring a subsystem of stellar-mass black hole. For this purpose we analyzed the MOCCA models of real star clusters contained in the Mocca Survey Database I. We showed that the presence of a stellar-mass black hole subsystem in tidally filling star cluster can lead to abrupt cluster dissolution connected with the loss of cluster dynamical equilibrium. Such cluster dissolution can be regarded as a third type of cluster dissolution mechanism. We additionally argue that such a mechanism should also work for tidally under-filling clusters with a top-heavy initial mass function.

Department/s

  • Lund Observatory

Publishing year

2019

Language

English

Pages

438-441

Publication/Series

Proceedings of the International Astronomical Union

Volume

14

Issue

351

Document type

Journal article

Publisher

Cambridge University Press

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • globular clusters: general
  • methods: numerical
  • stars: black holes
  • stellar dynamics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1743-9213