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arXiv · 1512.07316

The Pan-Pacific Planet Search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD33844

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 $a_b=1.60\pm$0.02 AU and $a_c=2.24\pm$0.05 AU, and have minimum masses (m sin $i$) of $M_b=1.96\pm$0.12 Mjup and $M_c=1.76\pm$0.18 Mjup. Detailed N-body dynamical simulations show that the two planets remain on stable orbits for more than $10^6$ years for low eccentricities, and are most likely trapped in a mutual 3:5 mean-motion resonance.

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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. 2015-12-23. The Pan-Pacific Planet Search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD33844. https://doi.org/10.3847/0004-637x%2F818%2F1%2F35

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