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arXiv 0706.1676astro-ph
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用MOST卫星发现B型系统HD 313926的强偏心短周期双星性质

Discovery of the strongly eccentric, short-period binary nature of the B-type system HD 313926 by the MOST satellite

Slavek Rucinski, Rainer Kuschnig, Jaymie M. Matthews, Wojtek Dimitrov, Theodor Pribulla, David B. Guenther, Anthony F. J. Moffat, Dimitar Sasselov, Gordon A. H.… 展开作者

Slavek Rucinski, Rainer Kuschnig, Jaymie M. Matthews, Wojtek Dimitrov, Theodor Pribulla, David B. Guenther, Anthony F. J. Moffat, Dimitar Sasselov, Gordon A. H. Walker, Werner W. Weiss

摘要:

2006年6月,MOST测光太空任务在它的导航星中发现了一个食双星,它的离心率相对较大,e = 0.20,轨道周期只有2.27天。HD 313926似乎由两颗光谱类型为B3 - B7的早期型恒星组成。它是已知周期小于3.5 d的早型双星中离心率最大的。尽管HD 313926的光谱类型和光变曲线模型显示它有很大的组成部分,而且周期很短,但它的轨道还没有圆化,所以它可能非常年轻,即使与其他年轻的B星相比也是如此。

英文摘要:

The MOST photometric space mission discovered an eclipsing binary among its guide stars in June 2006 which combines a relatively large eccentricity e = 0.20 with an orbital period of only 2.27 days. HD 313926 appears to consist of two early-type stars of spectral type B3 - B7. It has a largest eccentricity among known early-type binaries with periods less than 3.5 d. Despite the large components indicated by its spectral type and light curve model, and its short period, the orbit of HD 313926 has not yet circularised so it is probably very young, even compared to other young B stars.

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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