CN and C2H in IRC +10216

Details CN and C2H in IRC +10216 CN and C2H in IRC +10216

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...279..284h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 279, April 1, 1984, p. 284-290. Research supported by the Research Corp.

Astronomy and Astrophysics

Astrophysics

40

Carbon Stars, Cosmochemistry, Cyanogen, Radicals, Stellar Envelopes, Emission Spectra, Photochemical Reactions, Stellar Models

Scientific paper

The effects of the production of the radicals CN and C2H from the dissociation of HCN and C2H2 by ambient UV photons in the outer envelope of IRC +10216 are investigated. The spatial distribution of the radicals and their observable millimeter emission-line characteristics are calculated from the inferred abundances of the progenitor species in the envelope of IRC +10216 using photochemical and radiative transfer models. These are compared with available observations to examine whether photoproduction is a possible explanation of the observed emission from these species. The results suggest that the variable abundances induced by photodestruction of their progenitors do affect the observed emission from the radicals.

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