Main-sequence progenitor configurations of the NN ser candidate circumbinary planetary system are dynamically unstable
Article
Article Title | Main-sequence progenitor configurations of the NN ser candidate circumbinary planetary system are dynamically unstable |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Mustill, Alexander J. (Author), Marshall, Jonathan P. (Author), Villaver, Eva (Author), Veras, Dimitri (Author), Davis, Philip J. (Author), Horner, Jonathan (Author) and Wittenmyer, Robert A. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 436 (3), pp. 2515-2521 |
Number of Pages | 7 |
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/stt1754 |
Web Address (URL) | https://academic.oup.com/mnras/article/436/3/2515/1258195 |
Abstract | Recent observations of the NN Serpentis post-common envelope binary system have revealed eclipse timing variations that have been attributed to the presence of two Jovian-mass exo-planets. Under the assumption that these planets are real and survived from the binary's main-sequence state, we reconstruct initial binaries that give rise to the present NN Ser configuration and test the dynamical stability of the original system. Under standard assumptions about binary evolution, we find that survival of the planets through the entire main-sequence lifetime is very unlikely. Hence, we conclude that the planets are not survivors from before the common envelope phase, implying that either they formed recently out of material ejected from the primary or that the observed signals are of non-planetary origin. |
Keywords | planets and satellites; dynamical evolution and stability; binaries; stars; NN Ser; planetary systems |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
510101. Astrobiology | |
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 | Autonomous University of Madrid, Spain |
University of Cambridge, United Kingdom | |
University of New South Wales | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2710/main-sequence-progenitor-configurations-of-the-nn-ser-candidate-circumbinary-planetary-system-are-dynamically-unstable
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