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Parameters of core-collapse

Holger Baumgardt·Douglas C. Heggie·Piet Hut·Junichiro Makino
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Abstract

This paper considers the phenomenon of deep core collapse in collisional stellar systems, with stars of equal mass. The collapse takes place on some multiple, $ξ^{-1}$, of the central relaxation time, and produces a density profile in which $ρ\propto r^{-α}$, where $α$ is a constant. The parameters $α$ and $ξ$ have usually been determined from simplified models, such as gas and Fokker-Planck models, often with the simplification of isotropy. Here we determine the parameters directly from N-body simulations carried out using the newly completed GRAPE-6.

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Holger Baumgardt, Douglas C. Heggie, Piet Hut, Junichiro Makino. 2003-01-23. Parameters of core-collapse. https://doi.org/10.1046/j.1365-8711.2003.06407.x

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