Stellar Orbits around Galactic Center Black Hole
From an interesting paper in the latest Astrophysical Journal:
The Astrophysical Journal, 620:744-757, 2005 February 20
� 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A.
Stellar Orbits around the Galactic Center Black Hole
A. M. Ghez , S. Salim , S. D. Hornstein , A. Tanner , J. R. Lu , M. Morris , E. E. Becklin , and G. Duch�ne
Received 2003 June 5; accepted 2004 October 29
ABSTRACT
We present new diffraction-limited images of the Galactic center, obtained with the W. M. Keck I 10 m telescope. Within 0
4 of the Galaxy’s central dark mass, 17 proper-motion stars, with K magnitudes ranging from 14.0 to 16.8, are identified, and 10 of these are new detections (six were also independently discovered by others). In this sample, three newly identified (S0-16, S0-19, and S0-20) and four previously known (S0-1, S0-2, S0-4, and S0-5) sources have measured proper motions that reveal orbital solutions.