Protonated acetylene - an important circumstellar and interstellar ion

Details Protonated acetylene - an important circumstellar and interstellar ion Protonated acetylene - an important circumstellar and interstellar ion

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396..115g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 1, Sept. 1, 1992, p. 115-119. Research supported by NASA and NSF.

Astronomy and Astrophysics

Astrophysics

19

Acetylene, Interstellar Gas, Molecular Ions, Positive Ions, Proton Irradiation, Stellar Envelopes, Interstellar Chemistry, Molecular Clouds, Rotational Spectra, Stellar Evolution

Scientific paper

In a circumstellar envelope, a substantial amount of acetylene is transported in a wind to the outer envelope, where it can be photoionized by interstellar radiation and then converted into C2H3(+) by a low-temperature reaction with H2. New chemical modeling calculations indicate that sufficient C2H3(+) may be produced in the outer envelope of IRC + 10216 to be observable. Similar considerations suggest that C2H3(+) should also be detectable in interstellar clouds, provided its rotational spectrum has been measured accurately in the laboratory.

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