EUVE Spectrometry of QS Tel (RE1938-461): The Second Pole Becomes Active

S. Rosen, J. Mittaz, D.A.H. Buckley, A. Layden, C. McCain

Cape Workshop on Magnetic Cataclysmic Variables, ASP Conference Series, Col. 85, 1995. ed. D.A.H. Buckley and B. Warner.

Abstract

We report EUV spectrophotometric and contemporaneous optical observations of QS Tel. In contrast to the ROSAT discovery observations, the source was clearly accreting at both magnetic poles. We also observe a deep, narrow orbital dip, probably due to occultation by an accretion stream. While the EUV spectrum can be characterised by a ~15 eV blackbody, implying a large soft/hard X-ray flux ratio, it shows evidence of line and edge absorption features, indicating that more sophisticated emission models need to be applied. The Optical data suggest a marked change in the light curve in just 3 days.

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