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arXiv 1010.2672astro-ph.SR
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Mira型变星的光变曲线形状

The shapes of light curves of Mira-type variables

T. Lebzelter

摘要:

利用ASAS巡天的454个米拉光变曲线样本,研究了这类变星的光变形状。与早期的研究相反,我们选择了一种通用的方法来识别正弦光变化的任何偏差。我们发现,约30%的研究光变曲线显示出显着偏离正弦参考形状。在这些恒星中,可以识别出两种频率相当的特征光变曲线形状。大气化学和光变曲线形状之间的联系被发现了一些线索,但除此之外,光变曲线形状和其他恒星参数之间似乎没有或只有非常微弱的关系。

英文摘要:

Using a sample of 454 mira light curves from the ASAS survey we study the shape of the light variations in this kind of variable stars. Opposite to earlier studies, we choose a general approach to identify any deviation from a sinusoidal light change. We find that about 30% of the studied light curves show a significant deviation from the sinusoidal reference shape. Among these stars two characteristic light curve shapes of comparable frequency could be identified. Some hint for a connection between atmospheric chemistry and light curve shape was found, but beside that no or only very weak relations between light curve shape and other stellar parameters seem to exist.

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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