Revisiting the proposed circumbinary multiplanet system NSVS 14256825
Article
Article Title | Revisiting the proposed circumbinary multiplanet system NSVS 14256825 |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Hinse, Tobias Cornelius (Author), Lee, Jae Woo (Author), Gozdziewski, Krzysztof (Author), Horner, Jonathan (Author) and Wittenmyer, Robert A. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 438 (1), pp. 307-317 |
Number of Pages | 11 |
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/stt2183 |
Web Address (URL) | https://academic.oup.com/mnras/article/438/1/307/1032322 |
Abstract | In this work, we carry out an analysis of the observed times of primary and secondary eclipses of the post-common envelope binary NSVS 14256825. Recently, Almeida, Jablonski and Rodrigues proposed that two circumbinary companions orbit this short-period eclipsing binary, in order to explain observed variations in the timing of mutual eclipses between the two binary components. Using a standard weighted least-squares minimization technique, we have extensively explored the topology of χ2 parameter space of a single planet model. We find the data set to be insufficient to reliably constrain a one-companion model. Various models, each with similar statistical significance, result in substantially different orbital architectures for the additional companion. No evidence is seen for a second companion of planetary nature. We suspect insufficient coverage (baseline) of timing data causing the best-fitting parameters to be unconstrained. |
Keywords | binaries; eclipsing; stars; NSVS 14256825 |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
490302. Numerical analysis | |
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 | Korea Astronomy and Space Science Institute, Korea |
Nicolaus Copernicus University, Poland | |
University of New South Wales | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q270w/revisiting-the-proposed-circumbinary-multiplanet-system-nsvs-14256825
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