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Getting a Kick out of the Stellar Disk(s) in the Galactic Center

Published online by Cambridge University Press:  01 September 2007

H. B. Perets ,
G. Kupi  and
T. Alexander
H. B. Perets
Affiliation:
Weizmann Institute of Science, POB 26, Rehovot 76100, Israel.
G. Kupi
Affiliation:
Weizmann Institute of Science, POB 26, Rehovot 76100, Israel.
T. Alexander
Affiliation:
Weizmann Institute of Science, POB 26, Rehovot 76100, Israel.
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Abstract

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Recent observations of the Galactic center revealed a nuclear disk of young OB stars, in addition to many similar outlying stars with higher eccentricities and/or high inclinations relative to the disk (some of them possibly belonging to a second disk). Binaries in such nuclear disks, if they exist in non-negligible fractions, could have a major role in the evolution of the disks through binary heating of this stellar system. We suggest that interactions with/in binaries may explain some (or all) of the observed outlying young stars in the Galactic center. Such stars could have been formed in a disk, and later on kicked out from it through binary related interactions, similar to ejection of high velocity runaway OB stars in young clusters throughout the galaxy.

Keywords

Galaxy: centerblack hole physicsstars: kinematicsbinaries: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 275 - 276
Copyright
Copyright © International Astronomical Union 2008

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