Asteroseismic analysis of the CoRoT δ-Scuti star HD174936

Details Asteroseismic analysis of the CoRoT δ-Scuti star HD174936 Asteroseismic analysis of the CoRoT δ-Scuti star HD174936

2009-08-18

arxiv.org/abs/0908.2601v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, 7 figures, 2 tables. Accepted for publication in A&A CoRoT Special Feature

Scientific paper

We present an analysis of the \delta-Scuti star object HD 174936 (ID 7613) observed by CoRoT during the first short run SRc01 (27 days). A total number of 422 frequencies we are 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 of around 52 \muHz. 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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