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Asteroseismic analysis of the CoRoT delta Scuti star HD 174936

TitreAsteroseismic analysis of the CoRoT delta Scuti star HD 174936
Type de publicationJournal Article
Year of Publication2009
AuteursHernandez, AG, Moya, A, Michel, E, Garrido, R, Suarez, JC, Rodriguez, E, Amado, PJ, Martin-Ruiz, S, Rolland, A, Poretti, E, Samadi, R, Baglin, A, Auvergne, M, Catala, C, Lefevre, L, Baudin, F
JournalAstronomy & Astrophysics
Date PublishedOct
ISBN Number0004-6361
Numéro d'accèsWOS:000271052700010

We present an analysis of the delta-Scuti star HD 174936 (ID7613) observed by CoRoT during the first short run SRc01 ( 27 days). A total number of 422 frequencies were extracted from the light curve using standard prewhitening techniques. This number of frequencies was obtained by considering a spectral significance limit of sig = 10 using the software package SigSpec. Our analysis of the oscillation frequency spectrum reveals a spacing periodicity around 52 mu Hz. Although modes considered here are not in the asymptotic regime, a comparison with stellar models confirms that this signature may stem from a quasi-periodic pattern similar to the so-called large separation in solar-like stars.

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