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Extinct technetium in silicon carbide stardust grains: implications for stellar nucleosynthesis

Michael R Savina1, Andrew M Davis, C Emil Tripa

  • 1Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA. msavina@anl.gov

Science (New York, N.Y.)
|January 31, 2004
PubMed
Summary

Presolar silicon carbide stardust grains reveal s-process nucleosynthesis signatures. An anomaly in ruthenium-99 (99Ru) points to technetium-99 (99Tc) decay, indicating origins from low-mass asymptotic giant branch stars.

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