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arXiv 1302.3754astro-ph.HEastro-ph.GAastro-ph.SR
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银河系中高质量X射线双星分布的研究

Study of the distribution of High Mass X-ray Binaries in the Galaxy

A. Coleiro, S. Chaty

摘要:

高能天空的观测,主要是INTEGRAL卫星的观测,提出了关于高质量X射线双星(HMXB)的形成和演化的新问题。现在检测到的不同类型的HMXB的数量足够高,使我们能够对它们在银河系中的分布进行统计分析。对于第一次,我们推导出的距离和吸收的HMXB样本使用光谱能量分布拟合程序,我们研究的相关性与恒星形成复合体(SFC)在银河系中的分布。我们发现HMXBs与SFC聚集在一起,典型的簇大小为0.3 +/- 0.05 kpc,簇之间的特征距离为1.7 +/- 0.3 kpc。此外,我们提出了一个调查的螺旋臂和HMXB的位置之间的预期偏移,使我们能够限制年龄和迁移距离,由于超新星踢的一些来源。这些新方法将使我们能够以前所未有的可靠性评估环境对这些高能物体的影响。

英文摘要:

Observations of the high energy sky, mainly with the INTEGRAL satellite, have raised new questions about the formation and evolution of High Mass X-ray Binaries (HMXBs). The number of detected HMXBs of different types is now high enough to allow us to carry out a statistical analysis of their distribution in the Milky Way. For the first time, we derive the distance and absorption of a sample of HMXBs using a Spectral Energy Distribution fitting procedure, and we examine the correlation with the distribution of Star Forming Complexes (SFCs) in the Galaxy. We show that HMXBs are clustered with SFCs with a typical cluster size of 0.3 +/- 0.05 kpc and a characteristic distance between clusters of 1.7 +/- 0.3 kpc. Furthermore, we present an investigation of the expected offset between the position of spiral arms and HMXBs, allowing us to constrain age and migration distance due to supernova kick for some sources. These new methods will allow us to assess the influence of the environment on these high energy objects with unprecedented reliability.

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