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arXiv 0806.3473astro-ph
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轩辕十四的光谱轨道

A Spectroscopic Orbit for Regulus

D. R. Gies, S. Dieterich, N. D. Richardson, A. R. Riedel, B. L. Team, H. A. McAlister, W. G. Bagnuolo,, E. D. Grundstrom, S. Stefl, Th. Rivinius, D. Baade

摘要:

我们提出了一个径向速度研究的快速旋转的B星轩辕十四,表明恒星是一个单线光谱二。轨道周期(40.11 d)和可能的半长轴(0.35 AU)足够大,系统目前没有相互作用。然而,质量函数表明,次级有一个低质量(M_2 > 0.30 M_太阳),我们认为,伴星可能是一个白矮星。这样一颗恒星可能是轩辕十四自身巨大的旋转角动量的来源,也就是一个前质量供体的残余。

英文摘要:

We present a radial velocity study of the rapidly rotating B-star Regulus that indicates the star is a single-lined spectroscopic binary. The orbital period (40.11 d) and probable semimajor axis (0.35 AU) are large enough that the system is not interacting at present. However, the mass function suggests that the secondary has a low mass (M_2 > 0.30 M_sun), and we argue that the companion may be a white dwarf. Such a star would be the remnant of a former mass donor that was the source of the large spin angular momentum of Regulus itself.

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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