Planets around Giant Stars
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 MJup and 24.5 MJup 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.
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