Browsing by Subject "X-rays"
Now showing items 1-2 of 2
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A large, uniform sample of X-ray emitting AGN from the ROSAT All-Sky and Sloan Digital Sky Surveys: the Data Release 5 Sample
(American Astronomical Society - The Astronomical Journal, 2003-11)We describe further results of a program aimed to yield ∼104 fully characterized optical identifications of ROSAT X-ray sources. Our program employs X-ray data from the ROSAT All-Sky Survey (RASS), and both optical imaging ... -
A large, uniform sample of X-ray emitting AGN: selection approach and an initial catalog from the ROSAT All-Sky and Sloan Digital Sky Surveys
(American Astronomical Society - The Astronomical Journal, 2003-11)Many open questions in X-ray astronomy are limited by the relatively small number of objects in uniform optically-identified and observed samples, especially when rare subclasses are considered, or when subsets are ...