PAH molecules and carbon dust in interstellar clouds

Details PAH molecules and carbon dust in interstellar clouds PAH molecules and carbon dust in interstellar clouds

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.219..859d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 219, April 15, 1986, p. 859-864. NSERC-SERC-supported r

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Aromatic Compounds, Cosmic Dust, Hydrocarbons, Interstellar Chemistry, Interstellar Gas, Molecular Clouds, Polynuclear Organic Compounds, Chemical Reactions, Computational Chemistry, Interstellar Matter, Shock Waves

Scientific paper

An analysis of possible chemical reactions between polynuclear aromatic hydrocarbon (PAH) molecules and atoms and ions in the interstellar gas shows that a variety of destruction channels exist for these molecules. PAH molecules will have lifetimes of less than about 100,000 yr under diffuse cloud conditions, and therefore are unlikely to be a ubiquitous component of interstellar dust clouds. The destruction of PAH molecules is enhanced by temperature fluctuations, although PAH molecules may be observable as transient species in shocked regions. The relationship between PAH and carbon dust (HAC) is also discussed.

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