Bayesian re-analysis of the radial velocities of Gliese 581. Evidence in favour of only four planetary companions

  title={Bayesian re-analysis of the radial velocities of Gliese 581. Evidence in favour of only four planetary companions},
  author={Mikko Tuomi},
  journal={Astronomy and Astrophysics},
  • M. Tuomi
  • Published 2011
  • Physics
  • Astronomy and Astrophysics
Aims. The Gliese 581 planetary system has received attention because it has been proposed to host a low-mass planet in its habitable zone. We re-analyse the radial velocity measurements reported to contain six planetary signals to see whether these conclusions remain valid when the analyses are made using Bayesian tools instead of the common periodogram analyses. Methods. We analyse the combined radial velocity data set obtained using the HARPS and HIRES spectrographs using posterior sampling… Expand

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