Stars Close to the Massive Black Hole at the Center of the Milky Way
Recent measurements of stellar velocities (, ) and variable X-ray emission  near the center of the Milky Way have already provided the strongest case for the presence of a super-massive black hole in our Galaxy. Information on the enclosed mass and stellar number density counts, in the central stellar cluster of the Galaxy, now allows to derive realistic potentials to study stellar orbits. We present the results of calculations using a 4 th -order Hermite integrator. They provide valuable additional information on the three dimensional distribution and dynamics of the He-Stars. We also discuss the importance of Newtonian peri-astron shifts for stellar orbits in the central cluster and how future observations with infrared interferometers (LBT, VLTI, Keck)  will help to improve our understanding of the dynamics and distribution of the stars in this region.
KeywordsPlum Model Stellar Velocity Helium Star Early Type Star Stellar Orbit
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