The isotopic compositions and stellar sources of meteoritic graphite grains

Details The isotopic compositions and stellar sources of meteoritic graphite grains The isotopic compositions and stellar sources of meteoritic graphite grains

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.365..806a&link_type=abstract

Nature, Volume 365, Issue 6449, pp. 806-809 (1993).

Computer Science

45

Scientific paper

The isotopic compositions of interstellar graphite grains in meteorites provide a record of the stellar environments in which they formed. The grains have 12C/13C ratios that range far from the terrestrial value, as well as large variations in 14N/15N and 16O/18O, and pronounced 26Mg excesses from the decay of extinct 26AI. This isotopic variability indicates several types of stellar source, including asymptotic giant branch stars, Wolf-Rayet stars and novae.

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