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Symbiotic Binary Stars

Published online by Cambridge University Press:  07 August 2017

Scott J. Kenyon*
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, MA 02138

Abstract

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This paper briefly reviews the physical properties of symbiotic stars: long-period interacting binaries composed of a red giant primary star and a hot companion. Two types of binaries produce symbiotic optical spectra: semi-detached systems with a main sequence secondary and detached systems with a white dwarf secondary. Semi-detached symbiotics resemble cataclysmic variables and Algol binaries, but on a much larger scale, and undergo dwarf nova-like eruptions. Wind accretion powers detached systems; occasional thermonuclear runaways produce symbiotic novae - distant cousins of classical novae.