NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-18 T00:51:33 PDT
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For refcode 1998A&A...335..467T:
Retrieve 147 NED objects in this reference.
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
1998A&A...335..467T Identification of soft high galactic latitude RASS X-ray sources. I. A complete count-rate limited sample. Thomas H.-C., Beuermann K., Reinsch K., Schwope A.D., Truemper J., Voges W. Received 15 December 1997/Accepted 31 March 1998 Abstract. We present a summary of spectroscopic identifications for a complete sample of bright soft high galactic latitude X-ray sources drawn from the ROSAT All-Sky Survey which have PSPC count-rates CR>0.5cts/s and hardness ratios HR1<0. Of a total of 397 sources, 270 had catalogued counterparts although most of these were not previously known as X-ray sources; of the remaining 127 sources neither X-ray nor optical properties were previously known. Of the whole sample of very soft X-ray sources 155 were also discovered by the Wide-Field-Camera on board ROSAT. We present spectroscopic identifications of 108 sources and other identifications for further 18 sources; 1 source remains unidentified so far. In practically all cases a unique optical counterpart exists facilitating identification. The largest source classes are AGN, magnetic cataclysmic variables, and hot white dwarfs. Key words: X-rays: galaxies - X-rays: stars - galaxies: Seyfert - novae, cataclysmic variables - white dwarfs - stars: coronae
Retrieve 147 NED objects in this reference.
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