The Pan-Pacific planet search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD 33844

Wittenmyer, Robert A. and Johnson, John Asher and Butler, R. P. and Horner, Jonathan and Wang, Liang and Robertson, Paul and Jones, M. I. and Jenkins, J. S. and Brahm, R. and Tinney, C. G. and Mengel, M. W. and Clark, J. (2016) The Pan-Pacific planet search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD 33844. The Astrophysical Journal, 818 (1). pp. 35-42. ISSN 0004-637X

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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+/- 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version made accessible, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 05 Jul 2016 03:14
Last Modified: 17 May 2017 02:43
Uncontrolled Keywords: planetary systems; stars: individual (HD 33844); techniques: radial velocities
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Identification Number or DOI: 10.3847/0004-637X/818/1/35
URI: http://eprints.usq.edu.au/id/eprint/28920

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