Published August 10, 2008
| Published + Submitted
Journal Article
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The Jupiter Twin HD 154345b
Chicago
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Abstract
We announce the discovery of a twin of Jupiter orbiting the slightly metal-poor ([Fe/H] = − 0.1) nearby (d = 18 pc) G8 dwarf HD 154345. This planet has a minimum mass of 0.95 M_(Jup) and a 9.2 year, circular orbit with radius 4.2 AU. There is currently little or no evidence for other planets in the system, but smaller or exterior planets cannot yet be ruled out. We also detect a ~ 9 year activity cycle in this star photometrically and in chromospheric emission. We rule out activity cycles as the source of the radial velocity variations by comparison with other cycling late G dwarfs.
Additional Information
© 2008 American Astronomical Society. Received 8 January 2008. Accepted 12 February 2008. Published 23 July 2008. We wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services, and is made possible by the generous support of NASA and the NSF, including grant AST 03-07493.Attached Files
Published - Wright_2008_ApJ_683_L63.pdf
Submitted - 0802.1731.pdf
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Additional details
- Eprint ID
- 78741
- Resolver ID
- CaltechAUTHORS:20170705-070651871
- NASA
- NSF
- AST 03-07493
- Created
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2017-07-05Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field