461 citations · 1.9k across the 16 of their papers we have counts for
4 papers · 1 filter
Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum
Seth Redfield, Michael Endl, William D. Cochran +1
We present the first ground-based detection of sodium absorption in the transmission spectrum of an extrasolar planet. Absorption due to the atmosphere of the extrasolar planet HD1…
An m sin i = 24 Earth Mass Planetary Companion To The Nearby M Dwarf GJ 176
Michael Endl, William D. Cochran, Robert A. Wittenmyer +1
We report the detection of a planetary companion with a minimum mass of m sin i = 0.0771 M_Jup = 24.5 M_Earth to the nearby (d = 9.4 pc) M2.5V star GJ 176. The star was observed as…
Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems
Robert A. Wittenmyer, Michael Endl, William D. Cochran +1
Long time coverage and high radial velocity precision have allowed for the discovery of additional objects in known planetary systems. Many of the extrasolar planets detected have…
A Planetary System Around HD 155358: The Lowest Metallicity Planet Host Star
William D. Cochran, Michael Endl, Robert A. Wittenmyer +1
We report the detection of two planetary mass companions to the solar-type star HD 155358. The two planets have orbital periods of 195.0 and 530.3 days, with eccentricities of 0.11…