70 citations · 289 across the 7 of their papers we have counts for
7 papers
The Radial Velocity Variability of the K-giant Gamma Draconis: Stellar Variability Masquerading as a Planet
A. P. Hatzes, M. Endl, W. D. Cochran +9
We present precise stellar radial velocity measurements of Gamma Dra taken from 2003 to 2017. The data from 2003 to 2011 show coherent, long-lived variations with a period of 702 d…
Spectroscopic and Interferometric Measurements of Nine K Giant Stars
Ellyn K. Baines, Michaela P. Döllinger, Eike W. Guenther +3
We present spectroscopic and interferometric measurements for a sample of nine K giant stars. These targets are of particular interest because they are slated for stellar oscillati…
Long-lived, long-period radial velocity variations in Aldebaran: A planetary companion and stellar activity
A. P. Hatzes, W. D. Cochran, M. Endl +14
We investigate the nature of the long-period radial velocity variations in Alpha Tau first reported over 20 years ago. We analyzed precise stellar radial velocity measurements for…
The Mass of the Planet-hosting Giant Star Beta Geminorum Determined from its p-mode Oscillation Spectrum
A. P. Hatzes, M. Zechmeister, J. Matthews +7
We use precise radial velocity measurements and photometric data to derive the frequency spacing of the p-mode oscillation spectrum of the planet-hosting star Beta Gem. This spacin…
Angular Diameters and Effective Temperatures of Twenty-five K Giant Stars from the CHARA Array
Ellyn K. Baines, Michaela P. Doellinger, Felice Cusano +10
Using Georgia State University's CHARA Array interferometer, we measured angular diameters for 25 giant stars, six of which host exoplanets. The combination of these measurements a…
Planetary companions around the K giant stars 11 UMi and HD 32518
M. P. Döllinger, A. P. Hatzes, L. Pasquini +2
11 UMi and HD 32518 belong to a sample of 62 K giant stars that has been observed since February 2004 using the 2m Alfred Jensch telescope of the Thüringer Landessternwarte (TLS) t…
Planetary companion candidates around the K giant stars 42 Dra and HD 139357
M. P. Doellinger, A. P. Hatzes, L. Pasquini +3
For the past 3 years we have been monitoring 62 K giant stars using precise stellar radial velocity (RV) measurements with the 2m Alfred Jensch telescope of the Thüringer Landesste…