Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....64..195a&link_type=abstract
Astronomy and Astrophysics, vol. 64, no. 1-2, Mar. 1978, p. 195-213. Research supported by the Fonds National de la Recherche S
Astronomy and Astrophysics
Astrophysics
29
Meteorites, Neon Isotopes, Nuclear Fusion, Solar System, Abundance, Interstellar Matter, Solar Corona, Stellar Evolution, Supernovae, Thermonuclear Explosions
Scientific paper
The possibility of an extrasolar thermonuclear origin of Ne-E, a meteoritic neon component with a large proportion of Ne-22, is discussed. Supernova features which could lead to the production of the anomalous composition are examined, and the problem of how the anomalous composition could be carried into the solar system without homogenizing with interstellar material is considered, along with the question of how this composition could be incorporated in solid bodies. Particular attention is devoted to a study of the yields of certain nuclei (20 less than or equal to A less than or equal to 22) resulting from the explosive nuclear processing of H-rich or He-rich material during a supernova event or a nova outburst. For the model of supernova origin to be plausible, a strong fractionation has to take place between He and Ne and/or in nuclides in the above-mentioned range. The analysis suggests that in many cases at least part of the mass 22 nuclei was probably incorporated in the Ne-E host phase in the form of sodium.
Arnould Marcel
Norgaard H.
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