Observations of interstellar HOCO(+): Abundance enhancements toward the Galactic center

Details Observations of interstellar HOCO(+): Abundance enhancements toward the Galactic center Observations of interstellar HOCO(+): Abundance enhancements toward the Galactic center

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334..175m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 1, 1988, p. 175-181.

Astronomy and Astrophysics

Astrophysics

34

Galactic Nuclei, Hydrocarbons, Interstellar Matter, Molecular Clouds, Carbon Dioxide, Emission Spectra, Interstellar Chemistry

Scientific paper

A survey of the 404-303 and 101-000 transitions of HOCO+ has been made toward several molecular clouds. The HOCO+ molecule was not observed in any sources except Sgr B2 and Sgr A. The 505- 404 and 414- 313 transitions were also detected toward Sgr B2. The results indicate that gas phase CO2 is not a major carbon reservoir in typical molecular clouds. The column density of HOCO+ at the emission peak in Sgr B2 is ≡3×1014cm-2, and the fractional abundance relative to H2 ≥ 3×10-10.

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