A second giant planet in 3:2 mean-motion resonance in the HD 204313 system
Article
Article Title | A second giant planet in 3:2 mean-motion resonance in the HD 204313 system |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Robertson, Paul (Author), Horner, J. (Author), Wittenmyer, Robert A. (Author), Endl, Michael (Author), Cochran, William D. (Author), MacQueen, Phillip J. (Author), Brugamyer, Erik J. (Author), Simon, Attila E. (Author), Barnes, Stuart I. (Author) and Caldwell, Caroline (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 754 (1), pp. 1-9 |
Article Number | 50 |
Number of Pages | 9 |
Year | 2012 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-637X/754/1/50 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/0004-637X/754/1/50 |
Abstract | We present eight years of high-precision radial velocity (RV) data for HD 204313 from the 2.7m Harlan J. Smith Telescope at McDonald Observatory. The star is known to have a giant planet (Msin i = 3.5 M J ) on a 1900 day orbit, and a Neptune-mass planet at 0.2AU. Using our own data in combination with the published CORALIE RVs of Segransan et al., we discover an outer Jovian (Msin i = 1.6 M J ) planet with P 2800 days. Our orbital fit suggests that the planets are in a 3:2 mean motion resonance, which would potentially affect their stability. We perform a detailed stability analysis and verify that the planets must be in resonance. |
Keywords | planetary systems; planets and satellites; dynamical evolution and stability; HD 204313; radial velocities |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | For access to this article, please click on the URL link provided. |
Byline Affiliations | University of Texas at Austin, United States |
University of New South Wales | |
University of Szeged, Hungary | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2716/a-second-giant-planet-in-3-2-mean-motion-resonance-in-the-hd-204313-system
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