Speaker
Alexander Heger
(Los Alamos/UC St Cruz)
Description
I will give a review on the evolution of massive stars and their paths
to supernovae. Depending on their initial parameters, e.g., initial
mass, metalicity, mass loss, and rotation, different kinds of
supernovae are the result: normal core collapse supernovae,
collapsar-powered supernovae like gamma-ray bursts, or even
pair-instability supernovae. Similarly varied are the possible
remnants of these supernovae and their nucleosynthesis. While the
lowest mass stars may have only very little ejecta, the most massive
pair-instability supernovae may eject as much as hundred solar masses
in metals, out of which up to half can be radioactive nickel 56. I
will present recent results of extended grids of nucleosynthesis of
stars of low metallicity.
Author
Alexander Heger
(Los Alamos/UC St Cruz)
