Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..386m&link_type=abstract
In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J
Astronomy and Astrophysics
Astronomy
Dense Stellar Systems
Scientific paper
We use direct N-body simulations to study the internal evolution and orbital decay of dense star clusters near the Galactic center. These clusters sink toward the center due to dynamical friction with the stellar background and may go into core collapse before being disrupted by the Galactic tidal field. Collisions in the collapsed cluster core may lead to the formation of a single supermassive star. When the cluster eventually dissolves it may deposit the remnant of this supermassive star as well as a disproportionately large number of other massive stars within the innermost parsec of the Galactic nucleus. Comparing the results of N-body models to the observed spatial distribution and kinematics of IRS16 a group of young He I stars near the Galactic center we argue that this association may have formed in this way.
McMillan Steve
Portegies Zwart Simon
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