Rainer Schödel

TL;DR: In this paper, the mass and distance of the galaxy's central supermassive black hole Sgr A^* were estimated by using the kinematic measurements from speckle holography and adaptive optics.

TL;DR: In this article, the authors examined the proper motions of stars out to distances of 1.0-pc of Sagittarius A* in the Milky-Way NSC and obtained a reliable estimate of the stellar mass in the central parsec of the NSC.

TL;DR: In this paper, the power-law index of the extinction-law toward the central parsec of the Galaxy, and the absolute extinction toward the Galactic center, were derived based on the well-known properties of red clump stars.

TL;DR: S0-102, a star orbiting the authors' Galaxy’s supermassive black hole, is detected, doubling the number of known stars with full phase coverage and periods of less than 20 years and providing the opportunity to resolve degeneracies in the parameters describing the central gravitational potential and to test Einstein's theory of general relativity in an unexplored regime.

TL;DR: In this paper, a new method for separating early and late type stellar components of a dense stellar cluster based on narrow band filters was proposed, which is suitable for classifying K giants and later, as well as B2 main sequence (and earlier) stars that are brighter than 155 mag in the K band in the central parsec.