1302.3754 (A. Coleiro et al.)

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

A. Coleiro, S. Chaty

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.

View original: http://arxiv.org/abs/1302.3754