Journal Article

An alternative symbiotic channel to Type Ia supernovae

Guoliang Lü, Chunhua Zhu, Zhaojun Wang and Na Wang

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 396, issue 2, pages 1086-1095
Published in print June 2009 | ISSN: 0035-8711
Published online June 2009 | e-ISSN: 1365-2966 | DOI:
An alternative symbiotic channel to Type Ia supernovae

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By assuming an aspherical stellar wind with an equatorial disc from a red giant, we investigate the production of Type Ia supernovae (SNe Ia) via a symbiotic channel. We estimate that the Galactic birthrate of SNe Ia via the symbiotic channel is between 1.03 × 10−3 and 2.27 × 10−5 yr−1, while the delay time of SNe Ia has a wide range from ∼0.07 to 5 Gyr. The results are greatly affected by the outflow velocity and mass-loss rate of the equatorial disc. Using our model, we discuss the progenitors of SN 2002ic and SN 2006X.

Keywords: binaries: symbiotic; stars: evolution; stars: mass-loss; supernovae: general

Journal Article.  7703 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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