Chemical modelling of molecular sources. III - C3H in IRC + 10216

Details Chemical modelling of molecular sources. III - C3H in IRC + 10216 Chemical modelling of molecular sources. III - C3H in IRC + 10216

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134..129n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 1, May 1984, p. 129-133.

Astronomy and Astrophysics

Astrophysics

15

Abundance, Carbon Stars, Hydrocarbons, Molecular Interactions, Stellar Envelopes, Cyanoacetylene, Infrared Stars, Ionic Reactions, Photodissociation, Synthesis (Chemistry)

Scientific paper

Two doublets detected during a spectral survey of the carbon-rich object IRC + 10216 are tentatively identified as arising from C3H, which detailed chemical calculations indicate can be efficiently formed by ion-molecule reactions in an outflow whose abundance agrees with that derived from the observations. Circumstellar ion chemistry is noted to be driven by the photodissociation of carbon-containing parent species (such as CO, C2H2, and HCN) to C(+). It is suggested that C3N and HC3N are formed by neutral-neutral reactions at higher densities and temperatures than are presently considered.

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