The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa

R. A. Wittenmyer; M. Endl; L. Wang; J. A. Johnson; C. G. Tinney; S. J. O'Toole

doi:10.1088/0004-637X/743/2/184

The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa

Earth and Planetary Astrophysics 2015-06-03 v1

Authors: R. A. Wittenmyer , M. Endl , L. Wang , J. A. Johnson , C. G. Tinney , S. J. O'Toole

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Abstract

We introduce the Pan-Pacific Planet Search, a survey of 170 metal-rich Southern hemisphere subgiants using the 3.9m Anglo-Australian Telescope. We report the first discovery from this program, a giant planet orbiting 7 CMa (HD 47205) with a period of 763+/-17 days, eccentricity e=0.14+/-0.06, and m sin i=2.6+/-0.6 M_jup. The host star is a K giant with a mass of 1.5+/-0.3 M_sun and metallicity [Fe/H]=0.21+/-0.10. The mass and period of 7 CMa b are typical of planets which have been found to orbit intermediate-mass stars (M*>1.3 M_sun). Hipparcos photometry shows this star to be stable to 0.0004 mag on the radial-velocity period, giving confidence that this signal can be attributed to reflex motion caused by an orbiting planet.

Keywords

exoplanet radial velocity giant planet Pan-Pacific Planet Search K giant metal-rich subgiant

Cite

@article{arxiv.1111.1007,
  title  = {The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa},
  author = {R. A. Wittenmyer and M. Endl and L. Wang and J. A. Johnson and C. G. Tinney and S. J. O'Toole},
  journal= {arXiv preprint arXiv:1111.1007},
  year   = {2015}
}

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Accepted for publication in ApJ

The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa

Abstract

Keywords

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