The single degenerate channel for the progenitors of Type Ia supernovae
Abstract
We have carried out a detailed study of the single-degenerate channel for the progenitors of type Ia supernovae (SNe Ia). In the model, a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from an unevolved or a slightly evolved non-degenerate companion to increase its mass to Chandrasekhar mass limit. Incorporating the prescription of Hachisu et al. (1999a) for the accretion efficiency into Eggleton's stellar evolution code and assuming that the prescription is valid for all metallicities, we performed binary stellar evolution calculations for more than 25,000 close WD binary systems with various metallicities. The initial parameter spaces for SNe Ia are presented in an orbital period-secondary mass (log Pi, M2i) plane for each Z.
- Publication:
-
The Art of Modeling Stars in the 21st Century
- Pub Date:
- October 2008
- DOI:
- arXiv:
- arXiv:0805.3855
- Bibcode:
- 2008IAUS..252..379M
- Keywords:
-
- Binaries: close;
- stars: evolution;
- supernovae: general;
- white dwarf: metallicity;
- Astrophysics
- E-Print:
- 4 pages, 4 figures, oral talk, to appear in the Proceedings of IAU Symp. 252 "The Art of Modelling Stars in the 21st Century", Sanya, China, 6th-11th April 2008, (L. Deng, K.L. Chan &