New Planets around Three G Dwarfs
Abstract
Doppler velocity measurements from the Anglo-Australian Planet Search reveal planetary mass companions to HD 23127, HD 159868, and a possible second planetary companion to HD 154857. These stars are all G dwarfs. The companions are all in eccentric orbits with periods ranging from 1.2 to >9.3 yr, minimum (Msini) masses ranging from 1.5 to >4.5 MJ, and semimajor axes between 1 and >4.5 AU. The orbital parameters are updated for the inner planet to HD 154857, while continued monitoring of the outer companion is required to confirm its planet status.
Based on observations obtained at the Anglo-Australian Telescope, Siding Spring, Australia.- Publication:
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The Astrophysical Journal
- Pub Date:
- May 2007
- DOI:
- arXiv:
- arXiv:astro-ph/0702213
- Bibcode:
- 2007ApJ...660.1636O
- Keywords:
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- Stars: Planetary Systems;
- stars: individual (HD 23127);
- Stars: Individual: Henry Draper Number: HD 154857;
- stars: individual (HD 159868);
- Astrophysics
- E-Print:
- 23 pages, 5 figures, accepted for publication in ApJ