The erosion of PAH molecules within shocks in dark clouds

Details The erosion of PAH molecules within shocks in dark clouds The erosion of PAH molecules within shocks in dark clouds

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..512f&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Feb. 1, 1990, p. 512-516. Research supported by SE

Astronomy and Astrophysics

Astronomy

7

Aromatic Compounds, Cyclic Hydrocarbons, Dark Matter, Erosion, Magnetohydrodynamics, Molecular Ions, Carbon Monoxide, Emission Spectra, Shock Waves, Spatial Distribution, Temperature Distribution, Velocity Distribution

Scientific paper

Models of MHD shocks in dark clouds are developed to account for erosion and accretion reactions involving PAH molecules and PAH +/- ions. It is found that oxidation of the PAH leads to an enhancement of the C/CO ratio within the shock. The extent to which the PAH molecules and ions are eroded is shown to be dependent on the value of the ration n(PAH)/n(H). The significance of the results for the observed distributions of forbidden C I and CO emission from dark clouds is discussed.

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