{"title":"The mass of the black hole in GS2023+338/V404 Cygni","authors":"J. Cesares, P. Charles","doi":"10.1063/1.46026","DOIUrl":null,"url":null,"abstract":"New high resolution (0.8 A) Hα spectroscopy provides further constraints on the orbital parameters of the black hole candidate V404 Cyg. Our updated mass function is now 6.08±0.06 M⊙ which confirms V404 Cyg as the most important black hole candidate yet found. We also resolve the rotational broadening of the secondary star which yields the lowest mass ratio ever measured (q=Mc/Mx=0.050). The mass of the black hole is now restricted to the range 7–29 M⊙.","PeriodicalId":101857,"journal":{"name":"The evolution of X‐ray binaries","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The evolution of X‐ray binaries","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/1.46026","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
New high resolution (0.8 A) Hα spectroscopy provides further constraints on the orbital parameters of the black hole candidate V404 Cyg. Our updated mass function is now 6.08±0.06 M⊙ which confirms V404 Cyg as the most important black hole candidate yet found. We also resolve the rotational broadening of the secondary star which yields the lowest mass ratio ever measured (q=Mc/Mx=0.050). The mass of the black hole is now restricted to the range 7–29 M⊙.
新的高分辨率(0.8 A) h - α光谱为候选黑洞V404 Cyg的轨道参数提供了进一步的约束。我们更新的质量函数现在是6.08±0.06 M⊙，这证实了V404 Cyg是迄今为止发现的最重要的黑洞候选者。我们还解析了副恒星的旋转增宽，它产生了有史以来最低的质量比(q=Mc/Mx=0.050)。黑洞的质量现在被限制在7 - 29m⊙的范围内。
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