Stellar Dynamics at the Galactic Center

Details Stellar Dynamics at the Galactic Center Stellar Dynamics at the Galactic Center

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19312301r&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #123.01; Bulletin of the American Astronomical Society, Vol. 31, p.666

Astronomy and Astrophysics

Astronomy

Scientific paper

We determine the dynamics of the stellar cluster around the Galactic center, Sgr A*. The data that we fit include the surface density distribution of the stars, along with discrete measurements of their radial velocities and proper motions. Our method nonparametrically finds the stellar distribution function in the combined spherical potential of the central black hole and the stellar cluster (which is assumed to have a 1/r2 density profile). By including the uncertainties in the radially-varying stellar orbit anisotropy, this provides rigorous constraints on the mass of the black hole. Furthermore, the statistical parallax allows us to directly determine the distance to Sgr A*.

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