Precise Masses and Orbits for Nine Radial-velocity Exoplanets

  title={Precise Masses and Orbits for Nine Radial-velocity Exoplanets},
  author={Yiting Li and Timothy D. Brandt and Gregory Mirek Brandt and Trent J. Dupuy and Daniel Michalik and Rebecca Jensen-Clem and Yunlin Zeng and Jacqueline K. Faherty and Elena L. Mitra},
  journal={The Astronomical Journal},
Radial-velocity (RV) surveys have discovered hundreds of exoplanetary systems but suffer from a fundamental degeneracy between planet mass M p and orbital inclination i. In this paper, we resolve this degeneracy by combining RVs with complementary absolute astrometry taken from the Gaia EDR3 version of the cross calibrated Hipparcos–Gaia Catalog of Accelerations (HGCA). We use the Markov Chain Monte Carlo orbit code orvara to simultaneously fit literature RVs and absolute astrometry from the… 

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  • J. Winn
  • Physics, Geology
    The Astronomical Journal
  • 2022
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