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Astron. Astrophys. 318, 134-139 (1997)


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The ROSAT cataclysmic variable RX J2353.0-3852 *

T.M.C. Abbott ** 1, T.A. Fleming *** 2 and L. Pasquini 1

1 European Southern Observatory, Casilla 19001, Santiago 19, Chile
2 Max-Planck-Institut für Extraterrestrische Physik, Postfach 1603, D-85740 Garching bei München, Germany

Received 15 April 1996 / Accepted 3 June 1996

Abstract

We report observations of a ROSAT-discovered cataclysmic variable, RX J2353.0-3852. The optical spectrum shows strong, double-peaked Balmer emission, embedded in absorption troughs from H [FORMULA] onwards and similarly doubled He I and Fe II emission; He II [FORMULA] 4686 is not seen. Optical light curves obtained in 1993 November show a periodicity at 5246 sec with its first three harmonics, and another at 2282 sec. These periodicities were not present in further observations made in 1994 September. A pointed observation in 1994 with ROSAT yielded a spectrum consistent with a dwarf nova with a low mass transfer rate.

Key words: stars: cataclysmic variables – X-rays: stars – stars: individual: RX J2353.0-3852

* Based partly on observations made at the European Southern Observatory, La Silla, Chile.
** Current address: Canada-France-Hawaii Telescope, P.O. Box 1597, Kamuela, HI 96743, USA
*** Current address: Steward Observatory, University of Arizona, Tucson, AZ 85721, USA

Send offprint requests to: T.M.C. Abbott

© European Southern Observatory (ESO) 1997

Online publication: July 8, 1998

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