English

Planets around Giant Stars

Earth and Planetary Astrophysics 2015-05-20 v1
Authors: A. Quirrenbach , S. Reffert , C. Bergmann
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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.

Keywords

stellar and substellar companions exoplanets

Cite

@article{arxiv.1101.0615,
  title  = {Planets around Giant Stars},
  author = {A. Quirrenbach and S. Reffert and C. Bergmann},
  journal= {arXiv preprint arXiv:1101.0615},
  year   = {2015}
}

Comments

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

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