Precise radial velocities of giant stars: IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a ~13.6 au eccentric binary system

  title={Precise radial velocities of giant stars: IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a ~13.6 au eccentric binary system},
  author={M. Ortiz and S. Reffert and T. Trifonov and A. Quirrenbach and D. Mitchell and G. Nowak and E. Buenzli and N. Zimmerman and M. Bonnefoy and A. Skemer and D. Defr{\`e}re and M. Lee and D. Fischer and P. Hinz},
  journal={Astronomy and Astrophysics},
Context. For over 12 yr, we have carried out a precise radial velocity (RV) survey of a sample of 373 G- and K-giant stars using the Hamilton Echelle Spectrograph at the Lick Observatory. There are, among others, a number of multiple planetary systems in our sample as well as several planetary candidates in stellar binaries. Aims. We aim at detecting and characterizing substellar and stellar companions to the giant star HD 59686 A (HR 2877, HIP 36616). Methods. We obtained high-precision RV… Expand
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Dynamical Analysis of the Circumprimary Planet in the Eccentric Binary System HD 59686
We present a detailed orbital and stability analysis of the HD~59686 binary-star planet system. HD~59686 is a single-lined moderately close ($a_{B} = 13.6\,$AU) eccentric ($e_{B} = 0.73$) binary,Expand


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