Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-10-14
Astronomy and Astrophysics
Astrophysics
4 pages with 1 figure, LateX, uses newpasp.sty, to appear in "AGN Physics with the Sloan Digital Sky Survey", ed. G. T. Richar
Scientific paper
Recent X-ray surveys have now resolved most of the X-ray background (XRB) into discrete sources. While this represents a break- through 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 highest angu- lar 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.
Eckart Andreas
Straubmeier Christian
Voges Wolfgang
Zuther Jens
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