144 citations · 196 across the 3 of their papers we have counts for
6 papers
The Galactic Center: A Laboratory for Fundamental Astrophysics and Galactic Nuclei
A. Ghez, M. Morris, J. Lu +24
As the closest example of a galactic nucleus, the Galactic center presents an exquisite laboratory for learning about supermassive black holes (SMBH) and their environs. Detailed s…
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…
[Fe II] and H2 filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind
Bon-Chul Koo, Dae-Sik Moon, Ho-Gyu Lee +2
We present the results of near-infrared imaging and spectroscopic observations of the young, core-collapse supernova remnant (SNR) G11.2-0.3. In the [Fe II] 1.644 um image, we firs…
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…
Variable Infrared Emission from the Supermassive Black Hole at the Center of the Milky Way
A. M. Ghez, S. A. Wright, K. Matthews +7
We report the detection of a variable point source, imaged at L'(3.8 microns) with the W. M. Keck II 10-meter telescope's adaptive optics system, that is coincident to within 18 ma…
The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth
A. M. Ghez, G. Duchene, K. Matthews +11
We have obtained the first detection of spectral absorption lines in one of the high-velocity stars in the vicinity of the Galaxy's central supermassive black hole. Both Brgamma (2…