KIC 10080943: a binary star with two γ Doradus/δ Scuti hybrid pulsators. Analysis of the g modes
Article
Article Title | KIC 10080943: a binary star with two γ Doradus/δ Scuti hybrid pulsators. Analysis of the g modes |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Keen, M. A. (Author), Bedding, T. R. (Author), Murphy, S. J. (Author), Schmid, V. S. (Author), Aerts, C. (Author), Tkachenko, A. (Author), Ouazzani, R. M. (Author) and Kurtz, D. W. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 454 (2), pp. 1792-1797 |
Number of Pages | 6 |
Year | 2015 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stv2107 |
Web Address (URL) | https://academic.oup.com/mnras/article/454/2/1792/2892677 |
Abstract | We use 4 yr of Kepler photometry to study the non-eclipsing spectroscopic binary KIC 10080943. We find both components to be γ Doradus/δ Scuti hybrids, which pulsate in both p and g modes. We present an analysis of the g modes, which is complicated by the fact that the two sets of ℓ = 1 modes partially overlap in the frequency spectrum. Nevertheless, it is possible to disentangle them by identifying rotationally split doublets from one component and triplets from the other. The identification is helped by the presence of additive combination frequencies in the spectrum that involve the doublets but not the triplets. The rotational splittings of the multiplets imply core rotation periods of about 11 and 7 d in the two stars. One of the stars also shows evidence of ℓ = 2 modes. |
Keywords | Asteroseismology; Binaries: spectroscopic; Stars: individual: KIC 10080943; Stars: oscillations; Stars: variables: general; Stars: variables: δ Scuti; Astrophysics - Solar and Stellar 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 ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of Sydney |
Catholic University of Leuven, Belgium | |
Aarhus University, Denmark | |
University of Central Lancashire, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q738y/kic-10080943-a-binary-star-with-two-doradus-scuti-hybrid-pulsators-analysis-of-the-g-modes
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