2009/08/11 by Debra Fischer, D. A. Fischer, Peter Driscoll +21 · 3 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Doppler effect #Eccentricity (behavior) #Observatory #Orbit (dynamics) #Orbital eccentricity #Orbital elements #Orbital mechanics #Planet #Scientific Research and Discoveries #Stellar, planetary, and galactic studies #astro-ph.EP #astro-ph.SR
paper · pdf · doi:10.1088/0004-637x/703/2/1545
12 figures, 8 tables, accepted ApJ
arxiv created 2009/08/11 · openalex publication_date 2009/09/10 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present time series Doppler data from Lick Observatory that reveal the presence of long-period planetary companions orbiting nearby stars. The typical eccentricity of these massive planets are greater than the mean eccentricity of known exoplanets. HD 30562b has M sin i = 1.29 M Jup , with semimajor axis of 2.3 AU and eccentricity 0.76. The host star has a spectral type F8V and is metal rich. HD 86264b has M sin i = 7.0 M Jup , a rel = 2.86 AU, an eccentricity e = 0.7 and orbits a metal-rich, F7V star. HD 87883b has M sin i = 1.78 M Jup , a rel = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has M sin i = 1.78 M Jup , a rel = 3.3 AU, e = 0.24 and orbits a G0V star with slightly subsolar metallicity. HD 148427b has M sin i = 0.96 M Jup , a rel = 0.93 AU, eccentricity of 0.16 and orbits a metal rich K0 subgiant. We also present velocities for a planet orbiting the F8V metal-rich binary star, HD 196885A. The planet has M sin i = 2.58 M Jup , a rel = 2.37 AU, and orbital eccentricity of 0.48, in agreement with the independent discovery by Correia et al.