The Anglo-Australian planet search. XXIII. Two new Jupiter analogs

Wittenmyer, Robert A. and Horner, Jonathan and Tinney, C. G. and Butler, R. P. and Jones, H. R. A. and Tuomi, Mikko and Salter, G. S. and Carter, B. D. and Koch, F. Elliott and O'Toole, S. J. and Bailey, J. and Wright, D. (2014) The Anglo-Australian planet search. XXIII. Two new Jupiter analogs. The Astrophysical Journal, 783 (2). pp. 1-9. ISSN 0004-637X

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Abstract

We report the discovery of two long-period giant planets from the Anglo-Australian Planet Search. HD 154857c is in a multiple-planet system, while HD 114613b appears to be solitary. HD 114613b has an orbital period P = 10.5 yr, and a minimum mass msin i of 0.48 M Jup HD 154857c has P = 9.5 yr and msin i = 2.6 M Jup. These new data confirm the planetary nature of the previously unconstrained long-period object in the HD 154857 system. We have performed detailed dynamical stability simulations which show that the HD 154857 two-planet system is stable on timescales of at least 108 yr. These results highlight the continued importance of 'legacy' surveys with long observational baselines; these ongoing campaigns are critical for determining the population of Jupiter analogs, and hence of those planetary systems with architectures most like our own solar system.


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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 - No Department
Date Deposited: 25 Jun 2014 05:08
Last Modified: 17 May 2017 02:28
Uncontrolled Keywords: planets and satellites; detection; dynamical evolution and stability; planets and satellites; HD 114613; HD 154857; radial velocities
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020109 Space and Solar Physics
Identification Number or DOI: 10.1088/0004-637X/783/2/103
URI: http://eprints.usq.edu.au/id/eprint/25354

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