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The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole
Gunther Witzel, Breann. N. Sitarski, Andrea M. Ghez +13
We present new Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relati…
The late-type stellar density profile in the Galactic Center: A statistical approach
Samantha N. Chappell, Andrea M. Ghez, Tuan Do +5
The late-type stellar population in the Galactic Center was first predicted to reside in a dynamically relaxed cusp (power law slope ranging from 3/2 to 7/4). However, observations…
An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis
A. Boehle, A. M. Ghez, R. Schödel +11
We present new, more precise measurements of the mass and distance of our Galaxy's central supermassive black hole, Sgr A*. These results stem from a new analysis that more than do…
The nuclear cluster of the Milky Way: Our primary testbed for the interaction of a dense star cluster with a massive black hole
R. Schödel, A. Feldmeier, N. Neumayer +2
This article intends to provide a concise overview, from an observational point-of-view, of the current state of our knowledge of the most relevant properties of the Milky Way's nu…
The Keplerian orbit of G2
L. Meyer, A. M. Ghez, G. Witzel +8
We give an update of the observations and analysis of G2 - the gaseous red emission-line object that is on a very eccentric orbit around the Galaxy's central black hole and predict…
Keck Observations of the Galactic Center Source G2: Gas Cloud or Star?
K. Phifer, T. Do, L. Meyer +8
We present new observations and analysis of G2 - the intriguing red emission-line object which is quickly approaching the Galaxy's central black hole. The observations were obtaine…