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High tide: a systematic search for ellipsoidal variables in ASAS-SN
Monthly Notices of the Royal Astronomical Society ( IF 4.8 ) Pub Date : 2021-07-23 , DOI: 10.1093/mnras/stab2126
D M Rowan 1, 2 , K Z Stanek 1, 2 , T Jayasinghe 1, 2 , C S Kochanek 1, 2 , Todd A Thompson 1, 2 , B J Shappee 3 , T W -S Holoien 4 , J L Prieto 5, 6
Affiliation  

The majority of non-merging stellar mass black holes are discovered by observing high energy emission from accretion processes. Here, we pursue the large, but still mostly unstudied population of non-interacting black holes and neutron stars by searching for the tidally induced ellipsoidal variability of their stellar companions. We start from a sample of about 200 000 rotational variables, semiregular variables, and eclipsing binary stars from the All-Sky Automated Survey for Supernovae. We use a χ2 ratio test followed by visual inspection to identify 369 candidates for ellipsoidal variability. We also discuss how to combine the amplitude of the variability with mass and radius estimates for observed stars to calculate a minimum companion mass, identifying the most promising candidates for high mass companions.

中文翻译:

高潮:系统搜索 ASAS-SN 中的椭球变量

大多数非合并恒星质量黑洞是通过观察吸积过程中的高能发射而发现的。在这里,我们通过寻找它们的恒星伴星的潮汐诱导的椭球变率来追求大量但仍然大部分未被研究的非相互作用黑洞和中子星。我们从来自全天超新星自动巡天的大约 200 000 个自转变量、半规则变量和食双星的样本开始。我们使用 χ2 比率检验,然后进行目视检查来确定 369 个候选椭圆体变异性。我们还讨论了如何将变异幅度与观测恒星的质量和半径估计相结合,以计算最小伴星质量,确定最有希望的高质量伴星候选者。
更新日期:2021-07-23
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