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A Sample of X-Ray active extragalactic Sources suitable for NIR Adaptive Optics Observations

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arxiv astro-ph/0310371 v1 pith:CX2MUBPA submitted 2003-10-14 astro-ph

A Sample of X-Ray active extragalactic Sources suitable for NIR Adaptive Optics Observations

classification astro-ph
keywords x-raysamplesourcesadaptivebackgroundextragalacticnatureobjects
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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.

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