183 citations · 946 across the 10 of their papers we have counts for
10 papers
Consistency of the Infrared Variability of Sgr A* over 22 years
Zhuo Chen, E. Gallego-Cano, T. Do +14
We report new infrared measurements of the supermassive black hole at the Galactic Center, Sgr A*, over a decade that was previously inaccessible at these wavelengths. This enables…
Properties of the Remnant Clockwise Disk of Young Stars in the Galactic Center
Sylvana Yelda, Andrea M. Ghez, Jessica R. Lu +4
We present new kinematic measurements and modeling of a sample of 116 young stars in the central parsec of the Galaxy in order to investigate the properties of the young stellar di…
Stellar Populations in the Central 0.5 pc of the Galaxy I: A New Method for Constructing Luminosity Functions and Surface-Density Profiles
Tuan Do, Jessica R. Lu, Andrea M. Ghez +5
We present new high angular resolution near-infrared spectroscopic observations of the nuclear star cluster surrounding the Milky Way's central supermassive black hole. Using the i…
High angular resolution integral-field spectroscopy of the Galaxy's nuclear cluster: a missing stellar cusp?
Tuan Do, Andrea M. Ghez, Mark R. Morris +4
We report on the structure of the nuclear star cluster in the innermost 0.16 pc of the Galaxy as measured by the number density profile of late-type giants. Using laser guide star…
A near-IR variability study of the Galactic black hole: a red noise source with no detected periodicity
Tuan Do, Andrea M. Ghez, Mark R. Morris +5
We present the results of near-infrared (2 and 3 microns) monitoring of Sgr A*-IR with 1 min time sampling using the natural and laser guide star adaptive optics (LGS AO) system at…
Mid-Infrared Spectroscopy of Infrared Luminous Galaxies with Sub-Arcsecond Resolution
B. T. Soifer, G. Neugebauer, K. Matthews +2
Low spectral resolution (delta lambda/lambda ~ 50) mid-infrared observations with high angular resolution (0.3--0.5'') using the Long Wavelength Spectrometer on the Keck I Telescop…
High Resolution Mid-Infrared Imaging of Infrared Luminous Starburst Galaxies
B. T. Soifer, G. Neugebauer, K. Matthews +7
Observations for seven infrared luminous starburst galaxies are reported in the mid-infrared from 8 - 18 microns using the Keck Telescopes with spatial resolution approaching the d…
Stellar Companions and the Age of HD 141569 and its Circumstellar Disk
A. J. Weinberger, R. M. Rich, E. E. Becklin +2
We investigate the stellar environment of the Beta Pictoris-like star HD 141569 with optical spectroscopy and near infrared imaging. The B9.5Ve primary, and an M2 and an M4 type st…
Near Infrared Observations of a Redshift 5.34 Galaxy: Further Evidence for Dust Absorption in the Early Universe
L. Armus, K. Matthews, G. Neugebauer +1
Imaging at 1.25 and 2.20 microns has been obtained of the field containing the galaxy (RD1) found at redshift 5.34 by Dey et al.(1998). This galaxy has been detected at 1.25 micron…
Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption
B. T. Soifer, G. Neugebauer, M. Franx +2
Near-infrared imaging and spectroscopy have been obtained of the gravitationally lensed galaxy at z=4.92 discovered in HST images by Franx et al. (1997). Images at 1.2, 1.6 and 2.2…