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The Dwarf Nova EX Hydrae

Published online by Cambridge University Press:  25 April 2016

R. D. Watson  and
P. T. Rayner
R. D. Watson
Affiliation:
Department of Physics, University of Tasmania
P. T. Rayner
Affiliation:
Department of Physics, University of Tasmania
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Extract

The object EX Hya is a dwarf nova with a binary period of 98.3 min (Mumford 1964, 1967). Warner (1972, 1973a) has observed two complete cycles of this star with a photoelectric time resolution of 5 sec. These observations suggested that EX Hya can be understood in terms of the model proposed by Warner and Nather (1971) in their discussion of U Gem. In this model, a white dwarf primary of a semi-detached binary system is surrounded by a disk of gas formed from matter transfered from the secondary, which is a cool dwarf star filling its Roche lobe.

Type
Stellar
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 5 , September 1974 , pp. 271 - 274
Copyright
Copyright © Astronomical Society of Australia 1974

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References

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