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The core collapse of globular clusters with stellar evolution

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Abstract

The orbit averaged Fokker-Planck equation is used to study the dynamical evolution of globular clusters. Stellar evolutions according to their masses are incorporated in the model. The initial density distribution is chosen by Plummer's model with the initial mass function index α=0.65, 1.35, 2.35, and 3.35. The mass-loss rate is given by the model of Fusi-Pecci and Renzini. It is found that the stellar mass loss acts as an energy source, and thereby affects the dynamical evolution of globular clusters by slowing down the evolution rate and extending the core collapse time. Also, the dynamical length scale is extended.

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Authors and Affiliations

  1. Department of Astronomy and Meteorology, Yonsei University, Seoul, Korea

    Chang-Hwan Kim & Mun-Suk Chun

  2. Department of Physics, Kaist, Taejon, Korea

    Kyoung W. Min

Authors
  1. Chang-Hwan Kim
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  2. Mun-Suk Chun
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  3. Kyoung W. Min
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Kim, CH., Chun, MS. & Min, K.W. The core collapse of globular clusters with stellar evolution. Astrophys Space Sci 196, 191–198 (1992). https://doi.org/10.1007/BF00692887

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  • DOI: https://doi.org/10.1007/BF00692887

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