Asteroseismic analysis of the CoRoT δ Scuti star HD 174936
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García Hernández, Antonio; Moya, Andrés; Garrido, R.; Suárez Yanes, Juan Carlos; Rodríguez, E.; Amado, P. J.; Martín Ruiz, Sergio; Rolland Quintanilla, ÁngelEditorial
EDP Sciences
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2009Resumen
We present an analysis of the δ-Scuti star HD 174936 (ID 7613) 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 μHz. 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.