1.6k citations · 4.2k across the 26 of their papers we have counts for
5 papers · 1 filter
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…
Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits
A. M. Ghez, S. Salim, N. N. Weinberg +10
We report new precision measurements of the properties of our Galaxy's supermassive black hole. Based on astrometric (1995-2007) and radial velocity (2000-2007) measurements from t…
The Survey for Ionization in Neutral-Gas Galaxies: III. Diffuse, Warm Ionized Medium and Escape of Ionizing Radiation
M. S. Oey, G. R. Meurer, S. Yelda +7
We use the first data release from the SINGG H-alpha survey of HI-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of…
Differential Radial Velocities and Stellar Parameters of Nearby Young Stars
Diane Paulson, Sylvana Yelda
Radial velocity searches for substellar mass companions have focused primarily on stars older than 1 Gyr. Increased levels of stellar activity in young stars hinders the detection…
Optical Spectroscopy of a Flare on Barnard's Star
D. Paulson, J. Allred, R. Anderson +3
We present optical spectra of a flare on Barnard's star. Several photospheric as well as chromospheric species were enhanced by the flare heating. An analysis of the Balmer lines s…