Origin of organic globules in meteorites: Laboratory simulation using aromatic hydrocarbons

Midori Saito, Yuki Kimura

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Analogs of organic hollow globules, which have been found in carbonaceous chondrite meteorites and interplanetary dust particles, were synthesized in our laboratory from benzene and anthracene using plasma. Our results suggest that organic globules could be made from aromatic rings in circumstellar envelopes around evolved stars. The hollow interior could be formed by coagulation of vacancies, formed by electronic excitation and/or knock-out of carbon atoms following irradiation by plasma particles such as protons and He+ ions. This experimental result suggests that organic globules are possibly the final products in the evolution of carbonaceous matter from acetylene and benzene to polycyclic aromatic hydrocarbons in ejecta gas from evolved stars.

Original languageEnglish
Pages (from-to)L147-L151
JournalAstrophysical Journal
Volume703
Issue number2 PART 2
DOIs
Publication statusPublished - 2009

Keywords

  • Astrobiology
  • Astrochemistry
  • Circumstellar matter
  • Meteors, meteoroids
  • Methods: laboratory
  • Stars: carbon

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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