The Pan-Pacific Planet Search. IV. Two Super-Jupiters in a 3:5 Resonance Orbiting the Giant Star HD 33844

Robert Wittenmyer, John Asher Johnson, R. P. Butler, Jonathan Horner, Liang Wang, Paul Robertson, M. I. Jones, J. S. Jenkins, R. Brahm, C. G. Tinney, M. W. Mengel, Jerry D. Clark

Research output: Contribution to journalArticlepeer-review

Abstract

We report the discovery of two giant planets orbiting the K giant HD 33844 based on radial velocity data from three independent campaigns. The planets move on nearly circular orbits with semimajor axes {a}b\=1.60+/- 0.02 AU and {a}c=2.24+/- 0.05 AU, and have minimum masses (m sin i) of {M}b=1.96+/- 0.12 {M}{{Jup}} and {M}c=1.76+/- 0.18 {M}{{Jup}}. Detailed N-body dynamical simulations show that the two planets have remained on stable orbits for more than 106 years for low eccentricities and are most likely trapped in a mutual 3:5 mean motion resonance.

Original languageAmerican English
JournalThe Astrophysical Journal
Volume818
DOIs
StatePublished - Jan 1 2016

Keywords

  • Planetary Systems
  • Stars: Individual (HD 33844)
  • Techniques: Radial Velocities

Disciplines

  • Physical Sciences and Mathematics
  • Physics

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