Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.184p..79w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 184, Sept. 1978, p. 79P-84P. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
30
Dwarf Stars, Novae, X Ray Sources, Ariel 5 Satellite, Astronomical Catalogs, Light Curve, Sky Surveys (Astronomy), Stellar Mass Accretion
Scientific paper
We report the results of a sensitive search for 'hard' (no less than about 2 keV) X-ray emission from 47 dwarf novae, based on Ariel V Sky Survey Instrument (SSI) observations, using the point summation technique (PST). X-ray emission is detected from the region of two dwarf novae: SS Cygni and EX Hydrae. The refined SSI error box for the previously catalogued source, 2A 1251-290, is consistent with the position of EX Hya, and the variability indicated by the X-ray light curve implies that the cluster originally suggested is no longer a reasonable identification. These results are discussed in terms of the model described by Fabian et al. (1976) for X-ray emission from a system containing an accreting white dwarf.
Jameson Richard F.
Sherrington M. R.
Watson Michael G.
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