The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa
Abstract
We introduce the Pan-Pacific Planet Search, a survey of 170 metal-rich Southern Hemisphere subgiants using the 3.9 m Anglo-Australian Telescope. We report the first discovery from this program, a giant planet orbiting 7 CMa (HD 47205) with a period of 763 ± 17 days, eccentricity e = 0.14 ± 0.06, and msin i = 2.6 ± 0.6 M_Jup. The host star is a K giant with a mass of 1.5 ± 0.3 M_☉ and metallicity [Fe/H] = 0.21 ± 0.10. The mass and period of 7 CMa b are typical of planets which have been found to orbit intermediate-mass stars (M_* > 1.3 M_☉). Hipparcos photometry shows this star to be stable to 0.0004 mag on the radial-velocity period, giving confidence that this signal can be attributed to reflex motion caused by an orbiting planet.
Additional Information
© 2011 American Astronomical Society. Received 2011 August 30; accepted 2011 November 3; published 2011 December 2. We gratefully acknowledge the UK and Australian government support of the Anglo-Australian Telescope through their PPARC, STFC, and DIISR funding; STFC grant PP/C000552/1, ARC Grant DP0774000, and travel support from the Australian Astronomical Observatory. R.W. is grateful to the Chinese Academy of Sciences for the support of his stay in Beijing. R.W. is supported by a UNSW Vice-Chancellor's Fellowship. We thank the ATAC for the generous allocation of telescope time which facilitated this detection. This research has made use of NASA's Astrophysics Data System (ADS), and the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org.Attached Files
Published - Wittenmyer2011p16924Astrophys_J.pdf
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Additional details
- Eprint ID
- 29067
- Resolver ID
- CaltechAUTHORS:20120201-113101003
- STFC
- PP/C000552/1
- ARC Grant
- DP0774000
- Australian Astronomical Observatory
- Chinese Academy of Sciences
- UNSW Vice-Chancellor's Fellowship
- Created
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2012-02-01Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field