Three-dimensional Supernova Models Provide New Insights into the Origins of Stardust
Description
We present the isotope yields of two post-explosion, three-dimensional 15 M_sol core-collapse supernova models, 15S and 15A, and compare them to the carbon, nitrogen, silicon, aluminum, sulfur, calcium, titanium, iron, and nickel isotopic compositions of presolar SiC stardust. We find that material from the interior of a core-collapse supernova can form a rare subset of SiC stardust, called SiC D grains, characterized by enrichments of the isotopes 13C and 15N. The innermost material of these core-collapse supernovae is operating in the neutrino-driven regime and undergoes rapid proton capture early in the explosion, providing these isotopes which are not present in such large abundances in other stardust grains of supernova origin.
Date Created
The date the item was original created (prior to any relationship with the ASU Digital Repositories.)
2021-05
Agent
- Author (aut): Schulte, Jack
- Thesis director: Bose, Maitrayee
- Committee member: Foy, Joseph
- Contributor (ctb): School of Earth and Space Exploration
- Contributor (ctb): Department of Physics
- Contributor (ctb): Barrett, The Honors College