Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-15
Astron.J.133:313-329,2007
Astronomy and Astrophysics
Astrophysics
Accepted for publication in AJ; 32 pages, including 11 figures, and 6 example tables
Scientific paper
10.1086/509765
We describe further results of a program aimed to yield ~10^4 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 and spectroscopic data from the Sloan Digital Sky Survey (SDSS). RASS/SDSS data from 5740 deg^2 of sky spectroscopically covered in SDSS Data Release 5 (DR5) provide an expanded catalog of 7000 confirmed quasars and other AGN that are probable RASS identifications. Again in our expanded catalog, the identifications as X-ray sources are statistically secure, with only a few percent of the SDSS AGN likely to be randomly superposed on unrelated RASS X-ray sources. Most identifications continue to be quasars and Seyfert 1s with 15
Agueros Marcel A.
Anderson Scott F.
Collinge Matthew J.
Haggard Daryl
Hall Patrick B.
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