Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-27
Astronomy and Astrophysics
Astrophysics
11 pages, 13 eps figures, accepted for the publication of MNRAS
Scientific paper
10.1111/j.1365-2966.2007.12524.x
We have carried out N-body simulations for rotating star clusters with equal mass and compared the results with Fokker-Planck models. These two different approaches are found to produce fairly similar results, although there are some differences with regard to the detailed aspects. We confirmed the acceleration of the core collapse of a cluster due to an initial non-zero angular momentum and found a similar evolutionary trend in the central density and velocity dispersion in both simulations. The degree of acceleration depends on the initial angular momentum. Angular momentum is being lost from the cluster due to the evaporation of stars with a large angular momentum on a relaxation time scale.
Kim Eunhyeuk
Lee Hyung Mok
Spurzem Rainer
Yoon Ilsang
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