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The Symbiotic Novae

Published online by Cambridge University Press:  12 April 2016

R. Viotti
R. Viotti*
Affiliation:
Istituto Astrofisica Spaziale, CNR, Via E.Fermi 21, 00044 Frascati RM, Italy

Abstract

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Symbiotic Novae are composite spectrum variables, whose light history is characterized by a single nova-like outburst. Their behaviour and time evolution is rather similar to that of classical novae, except for the much longer time scale, and the associated physics could be the same. We give an overview of the basic characteristics of the symbiotic novae, and their time behaviour in different frequencies. We find that the observed amplitude of outburst is mostly determined by the red star visual luminosity. The actual luminosity increase of the compact object might be much larger than that observed, and closer to that of classical novae. In some systems, the red star luminosity is possibly weakened by circumstellar dust. In symbiotic novae accretion should occur from the red star wind. Although the actual value of the accretion rate is still uncertain, thermonuclear runaway seems to better describe the symbiotic novae phenomenon. But new observational and theoretical work is needed.

Type
4. Related Objects
Information
International Astronomical Union Colloquium , Volume 122: Physics of Classical Novae , 1990 , pp. 416 - 422
Copyright
Copyright © Springer-Verlag 1990

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