Publications (42)
GJ 832c: A super-earth in the habitable zone
R. A. Wittenmyer, Mikko Tuomi, R. P. Butler +17
We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an M dwarf previously known to host a Jupiter analog in a nearly-cir…
BVRI Observations of the Optical Afterglow of GRB 990510
K. Z. Stanek, P. M. Garnavich, J. Kaluzny +2
We present observations of the optical counterpart to the Gamma-Ray Burst (GRB) 990510 obtained with the Las Campanas 1.0-m telescope between 15 and 48 hours after the burst…
Calibration of the Relationship between Precipitable Water Vapor and 225 GHz Atmospheric Opacity via Optical Echelle Spectroscopy at Las Campanas Observatory
Joanna Thomas-Osip, Andrew McWilliam, M. M. Phillips +4
We report precipitable water vapor (PWV) measurements made at Las Campanas Observatory using optical spectra of H2O lines obtained with the Magellan echelle spectrograph, and calcu…
RR Lyrae Variables in the Globular Cluster M5
J. Kaluzny, A. Olech, I. Thompson +3
We present V-band CCD photometry of 65 RR Lyr variables from the globular cluster M5. We have estimated the basic physical parameters for 16 RRc stars and 26 RRab stars using a Fou…
A Detailed Analysis of the HD 73526 2:1 Resonant Planetary System
Robert A. Wittenmyer, Xianyu Tan, Man Hoi Lee +15
We present six years of new radial-velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and…
Frequency of planets orbiting M dwarfs in the Solar neighbourhood
M. Tuomi, H. R. A. Jones, R. P. Butler +14
The most abundant stars in the Galaxy, M dwarfs, are very commonly hosts to diverse systems of low-mass planets. Their abundancy implies that the general occurrence rate of planets…