He-detonation in sub-Chandrasekhar CO white dwarfs: a new insight into energetics and p-process nucleosynthesis

Details He-detonation in sub-Chandrasekhar CO white dwarfs: a new insight into energetics and p-process nucleosynthesis He-detonation in sub-Chandrasekhar CO white dwarfs: a new insight into energetics and p-process nucleosynthesis

2002-01-13

arxiv.org/abs/astro-ph/0201199v1

Astronomy and Astrophysics

Astrophysics

4 pages; A&A Letters in press

Scientific paper

10.1051/0004-6361:20020088

He-accreting white dwarfs with sub-Chandrasekhar mass are revisited. The impact of the use of an extended reaction network on the predicted energy production and characteristics of the detonating layers is studied. It is shown that the considered scenario can be the site of an $\alpha$p-process combined with a p-process and with a variant of the rp-process we refer to as the pn-process. We define the conditions under which the derived distribution of the abundances of the p-nuclides in the ejecta, including the puzzling light Mo and Ru isotopes, mimics the solar-system one.

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