- Conference date: 8−13 Jul 1994
- Location: Assergi, Italy
The evolution of binary systems leading to a supernova explosion and the nature of the thermonuclear flame propagating through the white dwarf are the two most uncertain aspects of the standard model of Type Ia Supernovae. Both aspects are connected by the transition from the accretion phase to the thermonuclear runaway. In this communication a scenario is investigated from the onset of the accretion phase up to the explosion and disruption of the white dwarf. Starting from a 0.8 M ⊙ CO white dwarf accreting C+O at a constant rate of 5 10−7 M ⊙/yr, explosive ignition of carbon occurs in the center at a rather low density, 1.8 109 g/cm3. The thermal conditions set up by the accretion process, nuclear energy generation, and convection turn out to be critical for determining the runaway properties. A detonation or a deflagration result for slightly different treatments of the transition from the hydrostatic evolution to the hydrodynamic one. The nucleosynthesis has been computed for both solutions.
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