Presupernova evolution of massive stars

Details Presupernova evolution of massive stars Presupernova evolution of massive stars

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7826045w&link_type=abstract

Unknown

Mathematics

Stellar Evolution, Supergiant Stars, Supernovae, Hydrodynamics, Mathematical Models, Neutron Stars

Scientific paper

Population 1 stars of 15 M/sub mass/ and 25 M/sub mass/ have been evolved from the zero-age main sequence through iron core collapse utilizing a numerical model that incorporates both implicit hydrodynamics and a detailed treatment of nuclear reactions. Both stars are found to form substantially neutronized iron cores of 1.56 M/sub mass/ and 1.61 M/sub mass/, and central electron abundances of 0.427 and 0.439 moles/g, respectively, during hydrostatic silicon burning. Just prior to collapse, the abundances of the elements in the 25 M/sub mass/ star (excluding the neutronized iron core) have ratios strikingly close to their solar system values over the mass range from oxygen to calcium, while the 15 M/sub mass/ star is characterized by large enhancements of Ne, Mg, and Si.

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