The binary mass ratios of circumbinary planet hosts
The binary mass ratios of circumbinary planet hosts
复制标题
绕双星行星宿主的双星质量比
DOI：
10.1093/mnras/stz959
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发表时间：
2019
影响因子：
4.8
通讯作者：
D. Martin
中科院分区：
文献类型：
--
作者：
D. Martin
几乎有12颗环联星行星被发现经过食联星。首次计算了该样本相对于宿主双星质量比的观测偏差。它示出的质量比影响过境检测在多个，有时微妙的方式，通过稳定性和动态的轨道，稀释过境深度，和几何过境和日食概率。令人惊讶的是，这些影响在很大程度上被抵消了。因此，开普勒使命中的凌日探测在质量比方面基本上是无偏的，因此可能代表真实的潜在人口。结果表明，环双星主机的质量比分布可能是相同的领域双星，因此大致均匀，但需要更多的观测来推断任何细微的差异。这些结果在近距离双星的形成和演化的背景下进行了讨论，其中质量比被认为是一个标志，以及包括TESS和BEBOP在内的环双星行星的其他调查。
Almost a dozen circumbinary planets have been found transiting eclipsing binaries. For the first time the observational bias of this sample is calculated with respect to the mass ratio of the host binaries. It is shown that the mass ratio affects transit detection in multiple, sometimes subtle ways, through stability and dynamics of orbits, dilution of transit depths, and the geometric transit and eclipse probabilities. Surprisingly though, it is found that these effects largely cancel out. Consequently, the transit detections in the Kepler mission are essentially unbiased with respect to mass ratio, and hence likely representative of the true underlying population. It is shown that the mass ratio distribution of circumbinary hosts may be the same as field binaries, and hence roughly uniform, but more observations are needed to deduce any subtle differences. These results are discussed in the context of close binary formation and evolution, of which the mass ratio is believed to be a marker, and other surveys for circumbinary planets including TESS and BEBOP.
影响因子：
4.8
作者：
Armstrong, D. J.;Osborn, H. P.;Udry, S.
通讯作者：
Udry, S.
影响因子：
4.8
作者：
Armstrong D
通讯作者：
Armstrong D