| Issue |
A&A
Volume 506, Number 1, October IV 2009
The CoRoT space mission: early results
|
|
|---|---|---|
| Page(s) | 79 - 83 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361/200911932 | |
| Published online | 27 July 2009 | |
Asteroseismic analysis of the CoRoT δ Scuti star HD 174936 *,**
1
Instituto de Astrofísica de Andalucía (CSIC), CP3004, Granada, Spain e-mail: agh@iaa.es
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
Received:
23
February
2009
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
© ESO, 2009
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