Keen, M. A., Bedding, T. R., Murphy, S. J., Schmid, V. S., Aerts, C., Tkachenko, A., Ouazzani, R.-M. and Kurtz, Donald Wayne (2015) KIC 10080943: a binary star with two γ Doradus/δ Scuti hybrid pulsators. Analysis of the g modes. Monthly Notices of the Royal Astronomical Society, 454 (2). pp. 1792-1797. ISSN 0035-8711
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Official URL: http://dx.doi.org/10.1093/mnras/stv2107
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 combina- tion 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.
|Uncontrolled Keywords (separate with ;):||asteroseismology – binaries; spectroscopic – stars; individual; KIC 10080943 – stars; oscillations – stars; variables; δ Scuti – stars; variables; general.|
|Subjects:||Physical sciences > Astronomy|
|Schools:||Faculty of Science and Technology > School of Physical Sciences and Computing > Jeremiah Horrocks Institute|
|Deposited By:||Nuala Jones|
|Deposited On:||09 May 2016 09:50|
|Last Modified:||22 Oct 2016 05:57|
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