The Anglo-Australian planet search. XXV. A candidate massive Saturn analog orbiting HD 30177
Article
Article Title | The Anglo-Australian planet search. XXV. A candidate massive Saturn analog orbiting HD 30177 |
---|---|
ERA Journal ID | 1048 |
Article Category | Article |
Authors | Wittenmyer, Robert A. (Author), Horner, Jonathan (Author), Mengel, M. W. (Author), Butler, R. P. (Author), Wright, D. J. (Author), Tinney, C. G. (Author), Carter, B. D. (Author), Jones, H. R. A. (Author), Anglada-Escude, G. (Author), Bailey, J. (Author) and O'Toole, Simon J. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 153 (4), pp. 1-12 |
Article Number | 167 |
Number of Pages | 12 |
Year | 2017 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aa5f17 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aa5f17 |
Abstract | We report the discovery of a second long-period giant planet orbiting HD 30177, a star previously known to host a massive Jupiter analog (HD 30177b: a=3.8$\pm$0.1 au, m sin $i=9.7\pm$0.5 Mjup). HD 30177c can be regarded as a massive Saturn analog in this system, with a=9.9$\pm$1.0 au and m sin $i=7.6\pm$3.1 Mjup. The formal best fit solution slightly favours a closer-in planet at $a\sim$7 au, but detailed n-body dynamical simulations show that configuration to be unstable. A shallow local minimum of longer-period, lower-eccentricity solutions was found to be dynamically stable, and hence we adopt the longer period in this work. The proposed $\sim$32 year orbit remains incomplete; further monitoring of this and other stars is necessary to reveal the population of distant gas giant planets with orbital separations $a\sim$10 au, analogous to that of Saturn. |
Keywords | planetary systems; radial velocities; HD 30177 |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Computational Engineering and Science Research Centre |
Carnegie Institution of Washington, United States | |
University of New South Wales | |
University of Hertfordshire, United Kingdom | |
University of London, United Kingdom | |
Australian Astronomical Observatory, Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3x23/the-anglo-australian-planet-search-xxv-a-candidate-massive-saturn-analog-orbiting-hd-30177
Download files
Submitted Version
1643
total views119
total downloads7
views this month0
downloads this month