CA and TI Isotopic Compositions of Size-Separated SiC Fractions from the Murchison Meteorite

Details CA and TI Isotopic Compositions of Size-Separated SiC Fractions from the Murchison Meteorite CA and TI Isotopic Compositions of Size-Separated SiC Fractions from the Murchison Meteorite

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27...23a&link_type=abstract

Lunar and Planetary Science, volume 27, page 23

Physics

6

Anomalies: Isotopic, Nucleosynthesis, Red Giant: Carbon Stars, Silicon Carbide, Sims Ion Probe, Stars: Agb

Scientific paper

Titanium isotopic patterns of presolar SiC grains from Murchison change with grain size; delta ^50Ti/delta ^46Ti and delta ^50Ti/delta ^49Ti ratios decrease with increasing grain size. This trend can be interpreted by assuming that SiC grains with different sizes come from AGB stars with different metallicities; coarser SiC grains formed in AGB stars of lower metallicity.

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