Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..115b&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)115-(12)124
Astronomy and Astrophysics
Astronomy
63
Cataclysmic Variables, Classifications, Light Curve, Sky Surveys (Astronomy), X Ray Astronomy, X Ray Spectra, Astronomical Catalogs, Heao 2, Iue, Proportional Counters, Rosat Mission, X Ray Binaries
Scientific paper
The ROSAT All-Sky Survey has for the first time permitted a synoptic view of the soft X-ray sky with high sensitivity. In this paper, we discuss the X-ray properties of known cataclysmic variables (CVs) as observed in the Survey and present a status report on programs to identify CVs among the newly discovered ROSAT X-ray sources. Of 170 CVs with known orbital period, 92 were detected in the Survey and 22 of these fall in the bright-source category with more than 0.5 Position-Sensitive Proportional Counter (PSPC) cts/s. Among the new bright sources, so far 19 have been identified as CVs and 3 as CV candidates, about doubling the census. We present spectra and light curves of known and new systems and discuss the origin of the X-ray emission in the different subclasses of CVs.
Beuermann Klaus
Thomas Hans-Christoph
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