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2008

Dynamical evolution of the young stars in the Galactic center

Perets, Hagai. B., Gualandris, Alessia, Merritt, David et al.

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Recent observations of the Galactic center revealed a nuclear disk of young OB stars near the massive black hole (MBH), 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).

In addition, observations show the existence of young B stars (the 'S-cluster') in an isotropic distribution in the close vicinity of the MBH ($<0.04$ pc).
We use extended N-body simulations to probe the dynamical evolution of these two populations.
We show that the stellar disk could have evolved to its currently observed state from a thin disk of stars formed in a gaseous disk, and that the dominant component in its evolution is the interaction with stars in the cusp around the MBH.

Dynamical evolution of the young stars in the Galactic center · Around

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