Instituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: email@example.com
2 Observatoire de Paris, LESIA, CNRS, UMR 8109, 92195 Meudon, France
3 INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy
4 Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bât. 121, 91405 Orsay, France
Accepted: 23 July 2009
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.
Key words: δ Sct / stars: rotation / stars: oscillations / stars: fundamental parameters / stars: interiors
The CoRoT space mission, launched on December 27, 2006, has been developed and is operated by the CNES, with the contribution of Austria, Belgium, Brasil, ESA, Germany, and Spain.
© ESO, 2009