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arXiv 0908.2601astro-ph.SR
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盾牌座δ星CoRoT的星震分析

Asteroseismic analysis of the CoRoT δ-Scuti star HD174936

A. García Hernández, A. Moya, E. Michel, R. Garrido, J. C. Suárez, E. Rodríguez, P. J. Amado, S. Martín-Ruíz, A. Rolland, E. Poretti, R. Samadi, A. Baglin, M. A… 展开作者

A. García Hernández, A. Moya, E. Michel, R. Garrido, J. C. Suárez, E. Rodríguez, P. J. Amado, S. Martín-Ruíz, A. Rolland, E. Poretti, R. Samadi, A. Baglin, M. Auvergne, C. Catala, L. Lefevre, F. Baudin

摘要:

我们提出了一个分析的δ-Scuti恒星对象HD 174936(ID 7613)在第一个短期运行SRc 01(27天)期间由CoRoT观察。我们使用标准预白化技术从光变曲线中提取了总共422个频率。通过使用软件包SigSpec考虑sig = 10的频谱显著性极限来获得该频率数。我们对振荡频谱的分析揭示了大约52 \muHz的间隔周期性。虽然这里考虑的模式不是在渐近制度,与恒星模型的比较证实,这种签名可能源于一个准周期性的模式类似于所谓的大分离类太阳恒星。

英文摘要:

We present an analysis of the δ-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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