764 citations · 2.2k across the 16 of their papers we have counts for
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Patterns of photometric and chromospheric variation among Sun-like stars: A 20-year perspective
G. W. Lockwood, B. A. Skiff, Gregory W. Henry +5
We examine patterns of variation of 32 primarily main sequence stars, extending our previous 7-12 year time series to 13-20 years by combining b, y data from Lowell Observatory wit…
The Extrasolar Planet epsilon Eridani b - Orbit and Mass
G. Fritz Benedict, Barbara E. McArthur, George Gatewood +11
Hubble Space Telescope observations of the nearby (3.22 pc), K2 V star epsilon Eridani have been combined with ground-based astrometric and radial velocity data to determine the ma…
A Survey of Chromospheric Activity in the Solar-Type Stars in the Open Cluster M67
Mark S. Giampapa, Jeffrey C. Hall, Richard R. Radick +1
We present the results of a spectroscopic survey of the Ca II H & K core strengths in a sample of 60 solar-type stars that are members of the solar-age and solar-metallicity open c…
High-amplitude, long-term X-ray variability in the solar-type star HD 81809: the beginning of an X-ray activity cycle?
F. Favata, G. Micela, S. L. Baliunas
We present the initial results from our XMM program aimed at searching for X-ray activity cycles in solar-type stars. HD 81809 is a G2-type star (somewhat more evolved than the Sun…
No planet for HD 166435
D. Queloz, G. W. Henry, J. P. Sivan +6
The G0V star HD166435 has been observed by the fiber-fed spectrograph ELODIE as one of the targets in the large extra-solar planet survey that we are conducting at the Observatory…
Evidence for a Long-period Planet Orbiting Epsilon Eridani
Artie P. Hatzes, William D. Cochran, Barbara McArthur +10
High precision radial velocity (RV) measurements spanning the years 1980.8--2000.0 are presented for the nearby (3.22 pc) K2 V star Eri. These data, which represent a combinati…