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

Battino, Umberto; Travaglio, Claudia; Pignatari, Marco; Lederer-Woods, Claudia

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. Heavy Elements Nucleosynthesis on Accreting White Dwarfs Surface: Seeding the p-Process. Presented at Nuclei in the Cosmos XV, Assergi, Italy

• Presentation Conference Type: Conference Paper (published)
• Conference Name: Nuclei in the Cosmos XV
• Online Publication Date: Aug 20, 2019
• Deposit Date: Nov 21, 2019
• Journal: Springer Proceedings in Physics
• Print ISSN: 0930-8989
• 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