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		| Paper: | 
		A Sample of X-Ray Active Extragalactic Sources Suitable for NIR Adaptive Optics Observations | 
	 
	
		| Volume: | 
		311, AGN Physics with the Sloan Digital Sky Survey | 
	 
	
		| Page: | 
		325 | 
	 
	
		| Authors: | 
		Zuther, J.; Eckart, A.; Straubmeier, C.; Voges, W. | 
	 
	
	
		| Abstract: | 
		Recent X-ray surveys have now resolved most of the X-ray background (XRB) into discrete sources. While this represents a breakthrough in the understanding of the XRB, the astrophysical nature of these sources still remains mysterious. In this article we present a sample of X-ray/optically selected extragalactic objects which are suitable for adaptive optics observations in the near infrared (NIR) at the highest angular resolution. The sample is based on a cross-correlation of the Sloan Digital Sky Survey and the ROSAT All Sky Survey. The NIR properties can help to disentangle the nature of the X-ray bright, partially absorbed and spectroscopically passive background objects and their hosts. | 
	 
	
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