Oxygen and Magnesium Isotopic Ratios of Presolar Spinel Grains

Details Oxygen and Magnesium Isotopic Ratios of Presolar Spinel Grains Oxygen and Magnesium Isotopic Ratios of Presolar Spinel Grains

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004lpi....35.1337z&link_type=abstract

35th Lunar and Planetary Science Conference, March 15-19, 2004, League City, Texas, abstract no.1337

Physics

2

Scientific paper

The O isotopic ratios of 23 spinel grains indicate an origin in red
giant or AGB stars. Mg isotopes are dominated by radiogenic ^26Mg.
Inferred ^26Al/^27Al ratios indicate that cool bottom processing occurs
in a substantial fraction of the grains' parent stars.

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