Elemental Carbon as Interstellar Dust

Details Elemental Carbon as Interstellar Dust Elemental Carbon as Interstellar Dust

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rspta.343...73p&link_type=abstract

Philosophical Transactions: Physical Sciences and Engineering, Volume 343, Issue 1667, pp. 73-85

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Scientific paper

C60 has not yet been detected in primitive meteorites, a finding that could demonstrate its existence in the early solar nebular or as a component of presolar dust. However, other allotropes of carbon, diamond and graphite, have been isolated from numerous chondritic samples. Studies of the isotopic composition and trace element content and these forms of carbon suggest that they condensed in circumstellar environments. Diamond may also have been produced in the early solar nebula and meteorite parent bodies by both low-temperature-low-pressure processes and shock events. Evidence for the occurrence of another carbon allotrope, with sp hybridized bonding, commonly known as carbyne, is presented.

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