The Unusual Cataclysmic Variable S193

Volume 21 number 2 (1992)

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Peter M. Garnavich

Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, 5071 W. Saanich Rd., R. R. 5, Victoria, B. C. V8X 4M6 Canada

Paula Szkody

Astronomy Department, FM-20, University of Washington, Seattle, WA 98195

Abstract

We present light curves of the recently identified cataclysmic variable S193. This object shows periodic or quasi-periodic oscillations on a time scale of minutes as well as an unusual historical light curve. Observations by the AAVSO are badly needed to better understand this object.