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arXiv 1812.04885astro-ph.SR
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新的CP星表的统计分析

Statistical analysis of the new catalogue of CP stars

S. Ghazaryan, G. Alecian, A. A. Hakobyan

摘要:

这次演讲是专门的统计分析的新目录的化学奇特的恒星汇编文件,其中化学丰度的这些恒星。该目录载有基于高分辨率光谱数据的428颗恒星的化学丰度和物理参数。Spearman秩相关检验适用于416 CP(108 HgMn,188 ApBp和120 AmFm)星和化学丰度和不同的物理参数(有效温度,表面重力和旋转速度)之间的相关性进行了检查。从几十个有趣的例子中,我们分离出四种情况:在HgMn星的Mn的特殊性,在AmFm星的Ca相关相对于有效温度,在ApBp星的情况下,氦和铁。我们还应用安德森-达林(AD)测试ApBp星,以检查是否是一个决定性的参数,丰富的特点。

英文摘要:

This talk is devoted to the statistical analysis of the new catalogue of Chemically Peculiar stars compiled from papers, where chemical abundances of those stars were given. The catalogue contains chemical abundances and physical parameters of 428 stars based on high-resolution spectroscopy data. Spearman's rank correlation test was applied for 416 CP (108 HgMn, 188 ApBp and 120 AmFm) stars and the correlation between chemical abundances and different physical parameters (effective temperature, surface gravity and rotational velocity) was checked. From dozens interesting cases we secluded four cases: the Mn peculiarities in HgMn stars, the Ca correlation with respect to effective temperature in AmFm stars, the case of helium and iron in ApBp stars. We applied also Anderson-Darling (AD) test on ApBp stars to check if multiplicity is a determinant parameter for abundance peculiarities.

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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