A dynamical investigation of the proposed BD +20 2457 system
Article
Article Title | A dynamical investigation of the proposed BD +20 2457 system |
---|---|
ERA Journal ID | 1074 |
Article Category | Article |
Authors | Horner, J. (Author), Wittenmyer, R. A. (Author), Hinse, T. C. (Author) and Marshall, J. P. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 439 (1), pp. 1176-1181 |
Number of Pages | 6 |
Year | 2014 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stu081 |
Web Address (URL) | https://academic.oup.com/mnras/article/439/1/1176/1749997 |
Abstract | We present a detailed dynamical analysis of the orbital stability of the BD +20 2457 system, which features planets or brown dwarfs moving on relatively eccentric orbits. We find that the system exhibits strong dynamical instability on astronomically short time-scales across a wide range of plausible orbital eccentricities, semi-major axes and inclinations. If the system truly hosts massive planets or brown dwarfs, our results suggest that they must move on orbits significantly different to those proposed in the discovery work. If that is indeed the case, then it is likely that the best-fitting orbital solutions for the proposed companions will change markedly as future observations are made. Such observations may result in the solution shifting to a more dynamically stable regime, potentially one where stability is ensured by mutually |
Keywords | planets and satellites; stars; BD +20 2457; planetary systems |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
490105. Dynamical systems in applications | |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of New South Wales |
Korea Astronomy and Space Science Institute, Korea | |
Autonomous University of Madrid, Spain | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q270v/a-dynamical-investigation-of-the-proposed-bd-20-2457-system
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