arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.01141astro-ph.SRastro-ph.EP
收藏

四星系统的共振俘获

Resonant capture in quadruple stellar systems

Scott Tremaine

摘要:

一些等级2+2构型的四恒星系统在两个紧密双星之间表现出轨道-轨道共振。我们发现,最重要的共振发生在1:1,3:2和2:1的周期比。我们描述了捕获所需的条件,并表明,他们可以满足在3:2和2:1的共振在二进制迁移显着的半长轴后,圆化,可能是通过磁制动或引力辐射。

英文摘要:

Some quadruple star systems in the hierarchical 2+2 configuration exhibit orbit-orbit resonances between the two compact binaries. We show that the most important resonances occur at period ratios of 1:1, 3:2 and 2:1. We describe the conditions required for capture and show that they can be satisfied at the 3:2 and 2:1 resonances in binaries that migrate significantly in semimajor axis after circularization, probably through magnetic braking or gravitational radiation.

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。

↑