Journal Article

New binary parameters for the symbiotic recurrent nova T Coronae Borealis

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 296, issue 1, pages 77-84
Published in print May 1998 | ISSN: 0035-8711
Published online May 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.01301.x
New binary parameters for the symbiotic recurrent nova T Coronae Borealis

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The amplitude of the ellipsoidal variability, the mass function and the evolutionary limits on the component masses have been used to constrain the binary system parameters of T Coronae Borealis. Contrary to all previous studies, our analysis shows that the mass ratio of T CrB is qMg/Mh≈0.6, which implies a low-mass binary system, with the stellar masses Mg∼0.7 M⊙ for the red giant and Mh∼1.2 M⊙ for the hot companion. This result strongly supports the thermonuclear runaway model for this recurrent nova, and solves all controversies about the nature of the hot component and the physical causes of its eruptions.

Keywords: binaries: symbiotic; stars: individual: T CrB; novae, cataclysmic variables.

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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