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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13861

Title: Detection of gravity modes in the massive binary V380 Cyg from Kepler space-based photometry and high-resolution spectroscopy
Authors: Tkachenko, A.
Aerts, Conny
Pavlovski, K.
Southworth, J.
Degroote, P.
Debosscher, J.
Still, M.
Bryson, S.
Molenberghs, Geert
Bloemen, S.
de Vries, B. L.
Hrudkova, M.
Lombaert, R.
Neyskens, P.
Papics, P. I.
Raskin, G.
Van Winckel, H.
Morris, R. L.
Sanderfer, D. T.
Seader, S. E.
Issue Date: 2012
Abstract: We report the discovery of low-amplitude gravity-mode oscillations in the massive binary star V380 Cyg, from 180 d of Kepler custom-aperture space photometry and 5 months of high-resolution high signal-to-noise ratio spectroscopy. The new data are of unprecedented quality and allowed the improvement of the orbital and fundamental parameters for this binary. The orbital solution was subtracted from the photometric data and led to the detection of periodic intrinsic variability with frequencies, of which some are multiples of the orbital frequency and others are not. Spectral disentangling allowed the detection of line-profile variability in the primary. With our discovery of intrinsic variability interpreted as gravity-mode oscillations, V380 Cyg becomes an important laboratory for future seismic tuning of the near-core physics in massive B-type stars.
Notes: Tkachenko, A (reprint author),Katholieke Univ Leuven, Inst Sterrenkunde, Celestijnenlaan 200D, B-3001 Louvain, Belgium.[Tkachenko, A.; Aerts, C.; Degroote, P.; Debosscher, J.; Bloemen, S.; de Vries, B. L.; Lombaert, R.; Raskin, G.; Van Winckel, H.] Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Louvain, Belgium. [Aerts, C.] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6500 GL Nijmegen, Netherlands. [Aerts, C.; Molenberghs, G.; Papics, P. I.] Univ Hasselt, Ctr Stat CenStat, B-3590 Diepenbeek, Belgium. [Pavlovski, K.] Univ Zagreb, Dept Phys, Zagreb 10000, Croatia. [Southworth, J.] Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England. [Still, M.; Bryson, S.] NASA, Ames Res Ctr, Bay Area Environm Res Inst, Moffett Field, CA 94035 USA. [Hrudkova, M.] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany. [Hrudkova, M.] Isaac Newton Grp Telescopes, E-38700 Santa Cruz De La Palma, Canary Islands, Spain. [Neyskens, P.] Univ Libre Brussels, Inst Astron & Astrophys, Brussels, Belgium. [Morris, R. L.; Seader, S. E.] NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA. andrew@ster.kuleuven.be
URI: http://hdl.handle.net/1942/13861
DOI: 10.1111/j.1745-3933.2012.01277.x
ISI #: 000306356600005
ISSN: 0035-8711
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Research publications

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