Truly eccentric - I. Revisiting eight single-eccentric planetary systems
Article
Article Title | Truly eccentric - I. Revisiting eight single-eccentric planetary systems |
---|---|
ERA Journal ID | 1074 |
Article Category | Article |
Authors | Wittenmyer, Robert A. (Author), Clark, Jake T. (Author), Zhao, Jinglin (Author), Horner, Jonathan (Author), Wang, Songhu (Author) and Johns, Daniel (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 484 (4), pp. 5859-5867 |
Number of Pages | 9 |
Year | 2019 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stz290 |
Web Address (URL) | https://academic.oup.com/mnras/article/484/4/5859/5303736 |
Abstract | We examine eight known single-eccentric planetary systems in light of recently released large data archives and new analysis techniques. For four of these systems (HD 7449, HD 65216, HD 89744, HD 92788) we find evidence for additional long-period companions. HD 65216c is a Jupiter analogue, with a period of 14.7 yr, e = 0.18, and m sin i of 2MJup, while the remaining candidate companions move on as-yet-incomplete orbits. Our results highlight the importance of revisiting the analysis of known exoplanetary systems when new data become available, particularly given the possibility that poorly sampled data might previously have led to the detection of a ‘false-positive’ single-eccentric planet, when the system in question actually contains two (or more) planets on near-circular orbits. |
Keywords | radial velocities; planets and satellites; stars; HD 7449; HD 65216; HD 89744; HD 92788; astrophysics; Earth; planetary astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of Southern Queensland |
Centre for Astrophysics | |
University of New South Wales | |
Yale University, United States | |
Kutztown University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5432/truly-eccentric-i-revisiting-eight-single-eccentric-planetary-systems
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