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arXiv 0909.5135astro-ph.SR
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HD 51106和HD 50747:用CoRoT观测的椭球双星和三重双星系统

HD 51106 and HD 50747: an ellipsoidal binary and a triple system observed with CoRoT

N. Dolez, S. Vauclair, E. Michel, A. Hui Bon Hua, G. Vauclair, D. Le Contel, P. Mathias, E. Poretti, P. J. Amado, M. Rainer, R. Samadi, A. Baglin, C. Catala, M.… 展开作者

N. Dolez, S. Vauclair, E. Michel, A. Hui Bon Hua, G. Vauclair, D. Le Contel, P. Mathias, E. Poretti, P. J. Amado, M. Rainer, R. Samadi, A. Baglin, C. Catala, M. Auvergne, K. Uytterhoeven, J. C. Valtier

摘要:

我们提出了一个分析的观测HD 51106和HD 50747的卫星CoRoT,在其初始运行期间获得的光谱预备观测。目的:完成光变曲线的分析,提取观测到的主要频率,并讨论一些关于恒星的初步解释。方法:我们使用标准的傅里叶变换和预白化方法来提取有关恒星周期的信息。结果如下:HD 51106是一颗椭球双星,其光变曲线可以完全用恒星的潮汐变形和较小的次级效应来解释。HD 50747是一个包含一颗变星的三重系统,它呈现出许多周期在几小时范围内的振荡模式。根据这一周期范围和对恒星物理参数的分析,我们认为HD 50747是一颗Gamma-Doradus星。

英文摘要:

We present an analysis of the observations of HD 51106 and HD 50747 by the satellite CoRoT, obtained during its initial run, and of the spectroscopic preparatory observations. AIMS: We complete an analysis of the light curve, extract the main frequencies observed, and discuss some preliminary interpretations about the stars. Methods: We used standard Fourier transform and pre-whitening methods to extract information about the periodicities of the stars. Results: HD 51106 is an ellipsoidal binary, the light curve of which can be completely explained by the tidal deformation of the star and smaller secondary effects. HD 50747 is a triple system containing a variable star, which exhibits many modes of oscillation with periods in the range of a few hours. On the basis of this period range and the analysis of the physical parameters of the star, we conclude that HD 50747 is a Gamma-Doradus star.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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