Five Planets and an Independent Confirmation of HD 196885Ab from Lick Observatory

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 Msin i = 1.29 M Jup, with semimajo...

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Bibliographic Details
Published in:The Astrophysical journal 2009-10, Vol.703 (2), p.1545-1556
Main Authors: Fischer, Debra, Driscoll, Peter, Isaacson, Howard, Giguere, Matt, Marcy, Geoffrey W, Valenti, Jeff, Wright, Jason T, Henry, Gregory W, Johnson, John Asher, Howard, Andrew, Peek, Katherine, McCarthy, Chris
Format: Article
Language:English
Subjects:
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BINARY STARS
Earth, ocean, space
ELEMENTS
Exact sciences and technology
METALS
ORBITS
PLANETS
STARS
VELOCITY
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Summary: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 Msin 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 Msin 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 Msin i = 1.78 M Jup, a rel = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has Msin 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 Msin 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 Msin 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.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/703/2/1545