Interstellar carbon in meteorites

P. K. Swart, M. M. Grady, C. T. Pillinger, R. S. Lewis, Edward Anders

Research output: Contribution to journalArticlepeer-review

86 Scopus citations


The Murchison and Allende chondrites contain up to 5 parts per million carbon that is enriched in carbon-13 by up to +1100 per mil (the ratio of carbon-12 to carbon-13 is approximately 42, compared to 88 to 93 for terrestrial carbon). This "heavy7quot; carbon is associated with neon-22 and with anomalous krypton and xenon showing the signature of the s-process (neutron capture on a slow time scale). It apparently represents interstellar grains ejected from late-type stars. A second anomalous xenon component ("CCFXe") is associated with a distinctive, light carbon (depleted in carbon-13 by 38 per mil), which, however, falls within the terrestrial range and hence may be of either local or exotic origin.

Original languageEnglish (US)
Pages (from-to)406-410
Number of pages5
Issue number4595
StatePublished - Jan 1 1983
Externally publishedYes

ASJC Scopus subject areas

  • General


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