Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26arv...3....1t&link_type=abstract
Astronomy and Astrophysics Review (ISSN 0935-4956), vol. 3, June 1991, p. 1-46.
Astronomy and Astrophysics
Astrophysics
55
Abundance, Cosmology, Galactic Evolution, Heavy Elements, Interstellar Matter, Nuclear Reactions, A Stars, Asymptotic Giant Branch Stars, Chemical Elements, Helium, Shock Waves, Solar System, Supernova Remnants, Supernovae
Scientific paper
A review of significant advances and refinements to the basic theory of nucleosynthesis is presented to show that the original theory is effective. Astronomical observations and theories are described in terms of their support to the theory. Important findings mentioned include the resolution of heavy-element burning into the burning of separate elements, the observation of elemental and isotopic ratios beyond the solar system, and theories which show that elements up to helium could have been produced in the early universe. Observed abundances are discussed in detail, and the processes and sites are also discussed with respect to the original ideas of nucleosynthesis theory. Observed astronomical abundances and calculations of large nuclear reaction networks are found to support nucleosynthesis, and the basic process structure has not changed.
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