3 millimeter J = 1-0 HCO(+) emission from the diffuse cloud toward zeta Ophiuchi

Details 3 millimeter J = 1-0 HCO(+) emission from the diffuse cloud toward zeta Ophiuchi 3 millimeter J = 1-0 HCO(+) emission from the diffuse cloud toward zeta Ophiuchi

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431l.131l&link_type=abstract

The Astrophysical Journal (ISSN 0004-637X), vol. 431, no. 2, pt. 2, p. L131-L134

Astronomy and Astrophysics

Astrophysics

36

Interstellar Chemistry, Molecular Clouds, Molecular Interactions, Absorption Spectra, Big Bang Cosmology, Depletion, Emission Spectra

Scientific paper

In diffuse clouds, HCO(+) is the immediate chemical antecedent of CO: we have detected 89 GHz emission from the J = 1-0 line of HCO(+) toward zeta Oph and at the CO peak 30 min to the south. The column densities required to reproduce these weak lines (0.02 and 0.1 K) are very sensitive to the assumed number density and carbon depletion, providing a sensitive test of chemical models.

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