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Variability of Soft X-Ray Emission of Ex Hydrae Observed with Einstein Observatory

Published online by Cambridge University Press:  12 April 2016

A. Kruszewski ,
R. Mewe ,
J. Heise ,
T. Chlebowski ,
W. van Dijk  and
R. Bakker
A. Kruszewski
Affiliation:
Warsaw University Observatory, Warsaw, Poland
R. Mewe
Affiliation:
European Southern Observatory, Garching, FRG
J. Heise
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands
T. Chlebowski
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands
W. van Dijk
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands
R. Bakker
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands

Extract

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The cataclysmic variable star EX Hydrae has been observed with the High Resolution Imager (HRI) and the Imaging Proportional Counter (IPC) onboard the Einstein Observatory. The X-ray position is coincident within 3 arcsec of the optical position as measured on Schmidt survey plates. During a 15 1/2 hour observation with IPC we have searched for a modulation of the X-ray flux. Strong evidence for a 67 min period (one of two known optical periods) has been found in the energy range 0.1-3.5 keV with the IPC. The time dependence of modulations is used to discuss a model and evolutionary status of this close binary system.

Type
Part IV: Cataclysmic Binaries and their Role in Stellar Evolution
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 457 - 466
Copyright
Copyright © Reidel 1982

References

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