KIC 10080943: a binary star with two [gamma] Doradus/[delta] Scuti hybrid pulsators. Analysis of the g modes

KIC 10080943: a binary star with two [gamma] Doradus/[delta] Scuti hybrid pulsators. Analysis of the g modes

We use 4 yr of Kepler photometry to study the non-eclipsing spectroscopic binary KIC 10080943. We find both components to be ... Doradus/... 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 ... = 1 modes...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2015-12, Vol.454 (2), p.1792
Hauptverfasser: Keen, M A, Bedding, T R, Murphy, S J, Schmid, V S, Aerts, C, Tkachenko, A, Ouazzani, R-M, Kurtz, D W
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Astronomy
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Star & galaxy formation
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container_issue 2
container_start_page 1792
container_title Monthly notices of the Royal Astronomical Society
container_volume 454
creator Keen, M A
Bedding, T R
Murphy, S J
Schmid, V S
Aerts, C
Tkachenko, A
Ouazzani, R-M
Kurtz, D W
description We use 4 yr of Kepler photometry to study the non-eclipsing spectroscopic binary KIC 10080943. We find both components to be ... Doradus/... 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 ... = 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. (ProQuest: ... denotes formulae/symbols omitted.)
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subjects Astronomy
Pulsars
Star & galaxy formation
title KIC 10080943: a binary star with two [gamma] Doradus/[delta] Scuti hybrid pulsators. Analysis of the g modes
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