r-process in supernova explosions; prompt vs delayed

Details r-process in supernova explosions; prompt vs delayed r-process in supernova explosions; prompt vs delayed

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.sb010s&link_type=abstract

American Physical Society, First Joint Meeting of the Nuclear Physicists of the American and Japanese Physical Societies October

Physics

Scientific paper

We have studied the r-process nucleosynthesis by simulations of hydrodynamics and explosive nucleosynthesis of ejecta from core-collapses and neutrino-driven winds. By studying hydrodynamics of core-collapse of a low-mass progenitor and its prompt explosion, we have found that a successful r-process can occur in a prompt supernova explosion via ejection of neutron-rich matter. We have also derived the conditions, from simulations, to have r-process in the neutrino-driven winds above the proto-neutron stars from delayed supernova explosions. We argue that two possible origins can correspond to the recent observational signs of r-elements in extremely metal-poor stars, possibly due to different mass ranges of progenitors.

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