On the dynamical stability of the proposed planetary system orbiting NSVS 14256825
Article
Article Title | On the dynamical stability of the proposed planetary system orbiting NSVS 14256825 |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Wittenmyer, Robert A. (Author), Horner, J. (Author) and Marshall, J. P. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 431 (3), pp. 2150-2154 |
Number of Pages | 4 |
Year | 2013 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stt299 |
Web Address (URL) | https://academic.oup.com/mnras/article/431/3/2150/1069628 |
Abstract | We present a detailed dynamical analysis of the orbital stability of the two circumbinary planets recently proposed to orbit the evolved eclipsing binary star system NSVS 14256825. As is the case for other recently proposed circumbinary planetary systems detected through the timing of mutual eclipses between the central binary stars, the proposed planets do not stand up to dynamical scrutiny. The proposed orbits for the two planets are extremely unstable on time-scales of less than a thousand years, regardless of the mutual inclination between the planetary orbits. For the scenario where the planetary orbits are coplanar, a small region of moderate stability was observed, featuring orbits that were somewhat protected from destabilization by the influence of mutual 2:1 mean-motion resonance between the orbits of the planets. Even in this stable region, however, the systems tested typically only survived on time-scales of the order of 1 Myr, far shorter than the age of the system. Our results suggest that if there are planets in the NSVS 14256825 system, they must move on orbits dramatically different to those proposed in the discovery work. More observations are clearly critically required in order to constrain the nature of the suggested orbital bodies. |
Keywords | binaries; eclipsing; planetary systems; planets and satellites; dynamical evolution and stability; stars; NSVS 14256825 |
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 ©: 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of New South Wales |
Autonomous University of Madrid, Spain | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2712/on-the-dynamical-stability-of-the-proposed-planetary-system-orbiting-nsvs-14256825
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