Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....52...63h&link_type=abstract
Astronomy and Astrophysics, vol. 52, no. 1, Oct. 1976, p. 63-68. Research supported by the Deutsche Forschungsgemeinschaft.
Astronomy and Astrophysics
Astrophysics
48
Capture Effect, Heavy Nuclei, Neutrons, Nuclear Fusion, Supernovae, Abundance, Energy Dissipation, Hydrodynamic Equations, Nuclear Reactions, Solar System, Stellar Models
Scientific paper
The synthesis of heavy and neutron-rich elements (with atomic weight of at least 70) is reconsidered in the framework of a dynamical supernova model. The synthesis equations for the rapid neutron-capture (or the r-) process and the hydrodynamical equations for the supernova explosion are solved simultaneously. Improved systematics of nuclear parameters (nuclear masses, beta-decay half-lives) are used, and the energy release due to beta-decays as well as the energy loss due to neutrinos (and their feedback on the hydrodynamics) is taken into account. It is shown that the observed solar-system abundance curve can be reproduced fairly well by assuming only one supernova event on a time-scale of the order of 1 s. However, there are still some discrepancies which might have their origin in the approximate treatment of freezing or, more likely, in the nuclear-mass formula used.
Hillebrandt Wolfgang
Kodama Tadayuki
Takahashi Keitaro
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