Dynamics of galactic nuclei: Mass segregation and collisions

Details Dynamics of galactic nuclei: Mass segregation and collisions Dynamics of galactic nuclei: Mass segregation and collisions

2007-10-02

arxiv.org/abs/0710.0490v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures. To appear in the proceedings of IAU Symposium 245, "Formation and Evolution of Galaxy Bulges"

Scientific paper

10.1017/S1743921308017675

Massive black holes (MBHs) with a mass below ~ 1e7 Msun are likely to reside at the centre of dense stellar nuclei shaped by 2-body relaxation, close interactions with the MBH and direct collisions. In this contribution, we stress the role of mass segregation of stellar-mass black holes into the innermost tenths of a parsec and point to the importance of hydrodynamical collisions between stars. At the Galactic centre, collisions must affect giant stars and some of the S-stars.

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