144 citations · 244 across the 2 of their papers we have counts for
4 papers
A Constant Spectral Index for Sagittarius A* During Infrared/X-ray Intensity Variations
S. D. Hornstein, K. Matthews, A. M. Ghez +5
We report the first time-series of broadband infrared (IR) color measurements of Sgr A*, the variable emission source associated with the supermassive black hole at the Galactic Ce…
The proper motion of the Arches cluster with Keck Laser-Guide Star Adaptive Optics
Andrea Stolte, Andrea M. Ghez, Mark Morris +3
We present the first measurement of the proper motion of the young, compact Arches cluster near the Galactic center from near-infrared adaptive optics (AO) data taken with the rece…
The First Laser Guide Star Adaptive Optics Observations of the Galactic Center: Sgr A*'s Infrared Color and the Extended Red Emission in its Vicinity
A. M. Ghez, S. D. Hornstein, J. Lu +14
(Abridged) We present the first Laser Guide Star Adaptive Optics (LGS-AO) observations of the Galactic center. LGS-AO has dramatically improved the quality, robustness, and versati…
Stellar Orbits Around the Galactic Center Black Hole
A. M. Ghez, S. Salim, S. D. Hornstein +5
We present new proper motion measurements and simultaneous orbital solutions for three newly identified (S0-16, S0-19, and S0-20) and four previously known (S0-1, S0-2, S0-4, and S…