Five Planets and an Independent Confirmation of HD 196885Ab from Lick Observatory
Abstract
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 M sin i = 7.0 M_(Jup), ɑ_(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), ɑ_(rel) = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has M sin i = 1.78 M_(Jup), ɑ_(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), ɑ_(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), ɑ_(rel) = 2.37 AU, and orbital eccentricity of 0.48, in agreement with the independent discovery by Correia et al.
Additional Information
© 2009 American Astronomical Society. Received 2009 April 28; accepted 2009 August 13; published 2009 September 10. Based on observations obtained at the Lick Observatory, which is operated by the University of California. We gratefully acknowledge the dedication and support of the Lick Observatory staff. D.A.F. acknowledges research support from NASA grant NNX08AF42G. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. A.W.H gratefully acknowledges support from a Townes Postdoctoral Fellowship at the U.C. Berkeley Space Sciences Laboratory. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their kind hospitality, the Keck observations of HD 87883 would not have been possible. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services.Files
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Additional details
- Eprint ID
- 36345
- Resolver ID
- CaltechAUTHORS:20130114-093634562
- NNX08AF42G
- NASA
- AST-0702821
- NSF Astronomy and Astrophysics Fellowship
- UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship
- Created
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2013-01-14Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field