Journal
ASTROPHYSICAL JOURNAL
Volume 703, Issue 2, Pages 1545-1556Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/703/2/1545
Keywords
planetary systems; stars: individual (HD 30562, HD 86264, HD 87883, HD 89307; HD 148427, HD 196885)
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Funding
- NASA [NNX08AF42G]
- NSF [AST-0702821]
- U.C. Berkeley Space Sciences Laboratory
- NASA [NNX08AF42G, 101288] Funding Source: Federal RePORTER
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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 hasM 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 MJup, 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), arel = 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.
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