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		| Paper: | 
		Multi-epoch Optical Spectropolarimetry of Jet-Launching High Mass
 X-ray Binaries | 
	 
	
		| Volume: | 
		449, Astronomical  Polarimetry 2008: Science from Small to Large Telescopes | 
	 
	
		| Page: | 
		341 | 
	 
	
		| Authors: | 
		Nagae, O. | 
	 
	
	
		| Abstract: | 
		We present multi-epoch optical spectropolarimetric observations of two
 High Mass X-ray Binaries (HMXBs). We found intrinsic polarization which
 would be arisen from the mass donors of these objects. Our observations
 suggest that the optical intrinsic polarization of HMXBs can be
 explained by light scattering in the circumstellar matter (CSM)
 around the mass donor. We discuss the geometrical properties of the CSM. | 
	 
	
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