Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-03-15
Astrophys.J.Suppl.129:435-474,2000
Astronomy and Astrophysics
Astrophysics
61 pages; ApJS in press; fixed bug in table file; also available at (better image quality) http://www.xray.mpe.mpg.de/theorie/
Scientific paper
10.1086/313427
In the construction of an X-ray selected sample of galaxy clusters for cosmological studies, we have assembled a sample of 495 X-ray sources found to show extended X-ray emission in the first processing of the ROSAT All-Sky Survey. The sample covers the celestial region with declination $\delta \ge 0\deg $ and galactic latitude $|b_{II}| \ge 20\deg $ and comprises sources with a count rate $\ge 0.06$ counts s$^{-1}$ and a source extent likelihood of 7. In an optical follow-up identification program we find 378 (76%) of these sources to be clusters of galaxies. ...
Boehringer Hans
Burg Richard
Giacconi Ricardo
Huchra John P.
Komossa Stefanie
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