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Astron. Astrophys. 324, L57-L60


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Letter to the Editor

HE 2350-3908: a dwarf nova with a 78m orbital period*

T. Augusteijn1 and L. Wisotzki2

1European Southern Observatory, Casilla 19001, Santiago 19, Chile
2Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany

Received 10 March 1997 / Accepted 18 April 1997

Abstract

We present time resolved CCD photometry and spectroscopy of the cataclysmic variable HE2350-3908 discovered in the Hamburg/ESO survey. We find that the orbital period of this source is 78.2 min. This is the shortest orbital period known to date for a cataclysmic variable with a normal hydrogen-rich secondary. The optical spectrum and the orbital light curve of HE2350-3908 is very similar to WZ Sge, and we argue that the source is a dwarf nova type cataclysmic variable with a very low mass-transfer rate, and a long recurrence time.

Key words: Stars: individual: HE2350-3908/RX J2353.0-3852 - cataclysmic variables

Send offprint requests to: T. Augusteijn
*based on observations made at the European Southern Observatory, La Silla, Chile


© European Southern Observatory (ESO) 1997

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