Conference proceeding
Black holes in massive star clusters
Formation and Evolution of Massive Young Star Clusters, Vol.322, pp.449-457
ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
01 Jan 2004
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Abstract
Close encounters and physical collisions between stars in young dense clusters can result in new channels for stellar evolution, and may lead to the formation of very massive stars and black holes via runaway merging. We present some details of this process, using the results of N-body simulations and simple analytical estimates to place limits on the cluster parameters for which it expected to occur. For small clusters, the mass of the runaway is effectively limited by the total number of high-mass stars in the system. For larger clusters, the runaway mass is determined by the fraction of stars that can mass-segregate to the cluster core while still on the main sequence. In typical cases, the result is in the range commonly cited for intermediate-mass black holes. This mechanism may therefore have important implications for the formation of massive black holes and black-hole binaries in dense cluster cores.
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Details
- Title
- Black holes in massive star clusters
- Creators
- S McMillanH BaumgardtSIP ZwartP HutJ Makino
- Contributors
- HJG Lamers (Editor)L J Smith (Editor)A Nota (Editor)
- Publication Details
- Formation and Evolution of Massive Young Star Clusters, Vol.322, pp.449-457
- Series
- ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
- Publisher
- Astronomical Soc Pacific
- Number of pages
- 9
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019170542604721
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