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

Published online by Cambridge University Press:  11 March 2020

Mirek Giersz Open the ORCID record for Mirek Giersz [Opens in a new window] ,
Abbas Askar Open the ORCID record for Abbas Askar [Opens in a new window] ,
Long Wang Open the ORCID record for Long Wang [Opens in a new window] ,
Arkadiusz Hypki Open the ORCID record for Arkadiusz Hypki [Opens in a new window] ,
Agostino Leveque Open the ORCID record for Agostino Leveque [Opens in a new window]  and
Rainer Spurzem
Mirek Giersz
Affiliation:
Nicolaus Copernicus Astronomical Centre, Polish Academy of Sciences, Warsaw, Poland email: [email protected]
Abbas Askar
Affiliation:
Lund Observatory, Department of Astronomy, and Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden email: [email protected]
Long Wang
Affiliation:
Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, Nussallee 14-16, D-53115 Bonn, Germany Argelander Institut Für Astronomie, Auf Dem Hügel 71, 53121, Bonn, Germany RIKEN Center for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan email: [email protected]
Arkadiusz Hypki
Affiliation:
Astronomical Observatory Institute, Faculty of Physics, A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland email: [email protected]
Agostino Leveque
Affiliation:
Nicolaus Copernicus Astronomical Centre, Polish Academy of Sciences, Warsaw, Poland email: [email protected]
Rainer Spurzem
Affiliation:
National Astronomical Observatories and Key Laboratory for Computational Astrophysics, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, D-69120 Heidelberg, Germany Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, HaiDian District, Beijing 100871, China email: [email protected]
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Abstract

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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.

Keywords

stellar dynamicsmethods: numericalglobular clusters: generalstars: black holes
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 438 - 441
Copyright
© International Astronomical Union 2020

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