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首页> 外文期刊>Canadian Journal of Mathematics >Gaia's detectability of black hole-main sequence star binaries formed in open clusters
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Gaia's detectability of black hole-main sequence star binaries formed in open clusters

机译：Gaia在开放簇中形成的黑洞主序列星二进制二进制文件的可知性

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Black hole-main sequence star (BH-MS) binaries are one of the targets of future data releases of the astrometric satellite Gaia. They are supposed to be formed in two main sites: a galactic field and star clusters. However, previous work has never predicted the number of BH-MS binaries originating in the latter sites. In this paper we estimate the number of BH-MS binaries formed in open clusters and detectable with Gaia based on the results of N-body simulations. By considering interstellar extinction in the Milky Way and observational constraints, we predict that similar to 10 BH-MS binaries are observable. We also find that chemical abundance patterns of companion MSs will help us to identify the origin of the binaries as star clusters. Such MSs are not polluted by outflows of the BH progenitors, such as stellar winds and supernova ejecta. Chemical anomalies might be a good test to confirm the origin of binaries with relatively less massive MSs (less than or similar to 5 M-circle dot), short orbital periods (similar to 1.5yr), and higher eccentricities (e greater than or similar to 0.1).
机译：黑洞主序列星（BH-MS）二进制文件是天体卫星盖亚未来数据版本的目标之一。它们应该在两个主要网站中形成：银河田和星团。但是，以前的工作从未预测源自后者网站的BH-MS二进制文件的数量。在本文中，我们估计在开放簇中形成的BH-MS二进制文件的数量，并且基于N体模拟的结果，利用GaIa检测。通过考虑银河系和观察限制的星际灭绝，我们预测类似于10个BH-MS二进制文件。我们还发现伴侣MS的化学丰富模式将有助于我们将二进制文件的起源识别为明星集群。这些MS不会被BH祖细胞的流出污染，例如恒星风和超新星喷射物。化学异常可能是一个良好的测试，以确认较少的巨大MSS（小于或类似于5 M圆点），短轨道周期（类似于1.5YR），更高的偏心（E大于或相似）到0.1）。

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