Parameters of core-collapse

Details Parameters of core-collapse Parameters of core-collapse

2003-01-10

arxiv.org/abs/astro-ph/0301166v2

Mon.Not.Roy.Astron.Soc.341:247,2003

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, accepted by MNRAS. Reference added to Table 1

Scientific paper

10.1046/j.1365-8711.2003.06407.x

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, $\xi ^{-1}$, of the central relaxation time, and produces a density profile in which $\rho \propto r^{-\alpha}$, where $\alpha$ is a constant. The parameters $\alpha$ and $\xi$ 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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