A new way to type IA supernovae - Explosion in common envelope

Details A new way to type IA supernovae - Explosion in common envelope A new way to type IA supernovae - Explosion in common envelope

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342l..19h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 342, July 1, 1989, p. L19-L22.

Astronomy and Astrophysics

Astrophysics

13

Binary Stars, Stellar Envelopes, Stellar Mass Accretion, Supernovae, Carbon Stars, Red Giant Stars, White Dwarf Stars

Scientific paper

A progenitor model of Type IA SNae is proposed. The model initially includes a C + O white dwarf and a low-mass red giant star with a He core. The red giant fills its inner critical Roche lobe and mass transfer begins. If the mass transfer rate exceeds a critical value, an extended envelope forms around the white dwarf and a common envelope state is realized. When the C + O core grows to the Chandrasekhar limit in the common envelope, a Type Ia SN occurs. The Type Ia birth rate expected from the model is consistent with that observed for the Galaxy.

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