Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986metic..21...95h&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 21, March 31, 1986, p. 95-108.
Astronomy and Astrophysics
Astronomy
Astronomical Models, Bismuth Isotopes, Lead Isotopes, Meteoritic Composition, Nuclear Fusion, Thallium Isotopes, Mercury Isotopes, Stellar Composition, Meteorites, Composition, Isotopes, Bismuth, Lead, Thallium, Formation, Source, Mercury (Element), Calculations, Models, Parameters, Abundance, Isotopic Ratios
Scientific paper
The yields of stable isotopes of Bi, Pb, Tl and Hg as well as yields of Pb-205 are calculated with a parametrized model for 'mini r-processing' in the Ne, O, C-rich zones of explosive burning in massive stars. The Pb isotopic compositions stand out by their comparatively low Pb-207 yields and by the fact that this r-process variant yields Pb-204 quite abundantly. The average Pb-205/Pb-204 yield ratio of 6.1 is the same order of magnitude as yield ratios deduced for s-processing. The Hg from this mini r-process looks like normal solar-system mercury, but with Hg-196 missing and the light s-isotopes A = 198, 199, 200 and 201 depleted (especially the odd-A species).
Heymann Dieter
Liffman Kurt
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