Biology
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...703l.147s&link_type=abstract
The Astrophysical Journal Letters, Volume 703, Issue 2, pp. L147-L151 (2009).
Biology
1
Astrobiology, Astrochemistry, Circumstellar Matter, Meteors, Meteoroids, Methods: Laboratory, Stars: Carbon
Scientific paper
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.
Kimura Yuki
Saito Midori
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