Asteroseismic analysis of the CoRoT <i>δ</i> Scuti star HD 174936
A. García HernándezInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]A. MoyaInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]E. MichelObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceR. GarridoInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]J. C. SuárezInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]E. RodríguezInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]P. J. AmadoInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]S. Martín-RuizInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]A. RollandInstituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: [email protected]E. PorettiINAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), ItalyR. SamadiObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceA. BaglinObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceM. AuvergneObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceC. CatalaObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceL. LefevreObservatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, FranceF. BaudinInstitut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bât. 121, 91405 Orsay, France
2009en
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Аннотация
We present an analysis of the <i>δ<i/>-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 <i>μ<i/>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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