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The Nature of the Difference Between Novae, Dwarf Novae, and Novalikes

Published online by Cambridge University Press:  14 August 2015

I. G. Mitrofanov
I. G. Mitrofanov*
Affiliation:
A.F. Ioffe Physical Technical Institute Academy of Science of the USSR Leningrad 194021, USSR

Extract

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Novae (N) and Dwarf Novae (DN) are considered to belong to the class of the Cataclysmic Variables (CVs). The Novalike stars and recently discovered Polars (the AM Herculis-type stars) seem to have the same nature as CVs and probably are members of this class. It is usually assumed that CVs are close binary systems, each system contains a degenerate dwarf and a nondegenerate second component, their period being usually less than 16h (e.g. see: Robinson 1976). A second star is believed to overfill its Roche lobe and its matter flows onto the degenerated component. Then around the degenerated dwarf there arises an accretion disk. This disk and the hot spot where the interaction between the disk and outflowing stream occurs are the main sources of the blue and ultraviolet continuum and strong H and He emission lines.

Type
VIII. Cataclysmic Variables and Polars
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 431 - 437
Copyright
Copyright © Reidel 1980 

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