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Heavy Elements Nucleosynthesis on Accreting White Dwarfs Surface: Seeding the p-Process

Pignatari, Marco

Authors



Abstract

© 2019, Springer Nature Switzerland AG. The production of the proton-rich isotopes beyond iron that we observe today in the solar system is still uncertain. Thermonuclear supernovae (SNe Ia) exploding within the single-degenerate scenario have been proposed to be a potential source for these isotopes. We calculate accretion models and the nucleosynthesis for four WD with different initial mass 0.85, 1.26, 1.32 and 1.38 solar masses models), calculating the full abundance distribution. The abundance distribution peaks between Fe and Zr for the model at 1 M while for larger WDs much higher production efficiency is obtained beyond iron, with a strong production up to the Pb region. Using these results, we compute the nucleosynthesis of proton rich heavy isotopes using a multi-D SNe Ia model, and discuss the uncertainties affecting our results.

Citation

Battino, U., Travaglio, C., Pignatari, M., & Lederer-Woods, C. (in press). Heavy Elements Nucleosynthesis on Accreting White Dwarfs Surface: Seeding the p-Process. Springer Proceedings in Physics, 219, 179-182. https://doi.org/10.1007/978-3-030-13876-9_29

Journal Article Type Conference Paper
Online Publication Date Aug 20, 2019
Deposit Date Nov 21, 2019
Journal Springer Proceedings in Physics
Print ISSN 0930-8989
Electronic ISSN 1867-4941
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 219
Pages 179-182
DOI https://doi.org/10.1007/978-3-030-13876-9_29
Public URL https://hull-repository.worktribe.com/output/2720592