Planets around Giant Stars

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Jan 2011Embargo end date: 01 Jan 2011Publisher:AIPJournal:AIP Conference Proceedings (issn: 0094-243X,

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Authors: Quirrenbach, A.; Reffert, S.; Bergmann, C.;

doi: 10.1063/1.3556189 , 10.48550/arxiv.1101.0615

arXiv: 1101.0615

Planets around Giant Stars

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Abstract

We present results from a radial-velocity survey of 373 giant stars at Lick Observatory, which started in 1999. The previously announced planets iota Dra b and Pollux b are confirmed by continued monitoring. The frequency of detected planetary companions appears to increase with metallicity. The star nu Oph is orbited by two brown dwarf companions with masses of 22.3 M_Jup and 24.5 M_Jup in orbits with a period ratio close to 6:1. It is likely that the two companions to nu Oph formed in a disk around the star.

8 pages, 6 figures, Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606

Keywords

Earth and Planetary Astrophysics (astro-ph.EP), FOS: Physical sciences, Astrophysics - Earth and Planetary Astrophysics

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