The Missing Population of Be+Black Hole X-Ray Binaries

摘要：

At present,117 Be/neutron star (Be/NS) X-ray binaries (XRBs) are known in the Galaxy and the Magellanic Clouds ,but not a single Be/black hole (Be/BH) binary was found so far. We carried out the calculations of stellar population synthesis to investigate the case of the apparently missing population of Be/BH XRBs. According to our calculations,the main reason of this disparity is the fact that within the orbital period range where Be XRBs are found (~10 to ~300 days),these systems are formed predominantly with a NS component. The systems with a BH component are formed predominantly with much longer orbital periods and they are not easy to detect.

关键词： X-rays:binaries (stars:)binaries:close stars:evolution stars:emission-line Be

作者: Aleksander Sadowski J.Zió(l)kowski K.Belczy(n)ski T.Bulik

作者单位: Copernicus Astronomical Center,ul.Bartycka 18,00-716 Warsaw,Poland Department of Astronomy,New Mexico State University,Frenger Mall,Las Cruces,NM 88003,USA Astronomical Observatory of Warsaw University,Al.Ujazdowskie 4,00-478 Warsaw,Poland

会议类型: 国际会议

会议名称: The 252th Symposium of the International Astronomical Union(国际天文学联合会第252届研讨会)

会议地点: 海南三亚

会议语种:英文

页码: 399-404

在线出版日期: 2008-04-06（万方平台首次上网日期，不代表论文的发表时间）