Letter to the Editor

P-process nucleosynthesis in detonating white dwarfs in the light of multidimensional hydrodynamical models

¹ Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, CP 226, 1050 Brussels, Belgium e-mail: sgoriely@astro.ulb.ac.be
² Departament de Física i Enginyeria Nuclear, UPC, Sor Eulalia d'Anzizu s/n, B5, 08034 Barcelona, Spain e-mail: [domingo.garcia;jordi.jose;eduardo.bravo]@upc.edu
³ Institut d'Estudis Espacials de Catalunya, Ed. Nexus-201, C/ Gran Capitá 2-4, 08034 Barcelona, Spain

Received: 30 June 2005
Accepted: 11 September 2005

Abstract

The p-process nucleosynthesis in He-accreting white dwarfs with sub-Chandrasekhar mass is revisited in the light of multi-dimensional hydrodynamical simulations. Post-processing calculations are performed on a sample of well-chosen track particles representative of the core and envelope material that is subject to the p-process. The p-abundance distributions in the disrupted core as well as in the ejected envelope are estimated and compared with previous analysis based on spherical-symmetric simulations. The present calculations confirm the results obtained in 1D simulations and the possibility to produce in particular the puzzling Mo and Ru p-isotopes in the envelope, provided it is initially enriched in s-process elements.