THE PAN-PACIFIC PLANET SEARCH. IV. TWO SUPER-JUPITERS IN A 3:5 RESONANCE ORBITING THE GIANT STAR HD 33844

Robert A. 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, J. Clark

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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 ab = 1.60 ± 0.02 AU and ac = 2.24 ± 0.05 AU, and have minimum masses (m sin i) of Mb = 1.96 ± 0.12 MJup and Mc = 1.76 ± 0.18 MJup. 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 languageEnglish
Article number35
JournalAstrophysical Journal
Volume818
Issue number1
DOIs
StatePublished - 10 Feb 2016
Externally publishedYes

Keywords

  • planetary systems
  • stars: individual (HD 33844)
  • techniques: radial velocities

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