Getting a kick out of the stellar disk(s) in the galactic center

Details Getting a kick out of the stellar disk(s) in the galactic center Getting a kick out of the stellar disk(s) in the galactic center

2007-09-30

arxiv.org/abs/0710.0139v1

IAU Symposium, 2008, Volume 246, p. 275-276

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figs. To be published in the proceedings of the IAU 246 symposium on "Dynamical evolution of dense stellar systems"

Scientific paper

10.1017/S1743921308015780

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.

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