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An eclipse of the X-ray flux from the dwarf nova OY Carinae in quiescence

Gabriel W. Pratt, B. J. M. Hassall, T. Naylor, Janet H. Wood

astro-pharXiv:astro-ph/9903058

Abstract

We present a phase-resolved ROSAT HRI X-ray light curve of the dwarf nova OY Car in quiescence. The X-ray flux is eclipsed at the same time as the optical eclipse of the primary, and the region of X -ray emission is comparable in size to the white dwarf. We use subsequent optical observations to update the orbital ephemeris of the system.

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