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XENON, OSMIUM, AND LEAD FORMED IN O‐SHELLS AND C‐SHELLS OF MASSIVE STARS
Author(s) -
Heymann Dieter,
Dziczkaniec Marlene
Publication year - 1980
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1980.tb00168.x
Subject(s) - chondrite , osmium , xenon , allende meteorite , explosive material , meteorite , carbonaceous chondrite , stars , isotope , chemistry , astrobiology , carbon fibers , radiochemistry , astrophysics , physics , materials science , nuclear physics , biochemistry , organic chemistry , composite material , composite number , ruthenium , catalysis
In this paper we show that the explosive products from O‐shells of massive stars which contain 124 Xe with large overproduction factors do not contain any of the naturally occurring isotopes of Os and Pb. We show further that the explosive products from C‐shells (explosive carbon burning) do contain Os and Pb along with Xe which is strongly enriched in r‐Xe of anomalous isotopic composition. The composition of Os in this matter is probably s‐like rather than r‐like. Pb in this matter is enriched in 208 Pb. The results and arguments of this paper have implications for studies of isotopic compositions of Xe, Os, and Pb in residues of the Allende and other carbonaceous chondrites.