Interstellar polyynes from the disruption of carbon grains

Details Interstellar polyynes from the disruption of carbon grains Interstellar polyynes from the disruption of carbon grains

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.211...97d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 211, Nov. 1, 1984, p. 97-103. Research supported by the

Astronomy and Astrophysics

Astronomy

21

Carbon, Interstellar Chemistry, Polyatomic Molecules, Molecular Clouds, Molecular Interactions, Photodissociation, Shock Waves

Scientific paper

Carbon grains disrupted by shocks in diffuse interstellar clouds release substantial abundances of large carbon-chain molecules into the gas, where they are destroyed by photodissociation and gas-phase reaction. The column density arising from a single shock for molecules containing ≡10 atoms is calculated to be ≡1011cm-2. This is a value unlikely to be obtained by gas-phase reactions in diffuse clouds. The chemistry of the large carbon-chain molecules should reflect the conditions appropriate to the cool atmospheres of carbon-rich stars, rather than the situation in an interstellar cloud.

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