ORIGIN OF ORGANIC GLOBULES IN METEORITES: LABORATORY SIMULATION USING AROMATIC HYDROCARBONS
- Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi 444-8585 (Japan)
- Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai 980-8578 (Japan)
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{sup +} 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.
- OSTI ID:
- 21371864
- Journal Information:
- Astrophysical Journal (Online), Vol. 703, Issue 2; Other Information: DOI: 10.1088/0004-637X/703/2/L147; ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COSMOLOGY AND ASTRONOMY
ACETYLENE
ANTHRACENE
BENZENE
CARBON
CHONDRITES
DUSTS
EXCITATION
HELIUM IONS
MATTER
METEOROIDS
PARTICLES
PLASMA
POLYCYCLIC AROMATIC HYDROCARBONS
PROTONS
SIMULATION
STARS
ALKYNES
AROMATICS
BARYONS
CHARGED PARTICLES
CONDENSED AROMATICS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FERMIONS
HADRONS
HYDROCARBONS
IONS
METEORITES
NONMETALS
NUCLEONS
ORGANIC COMPOUNDS
STONE METEORITES