Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...243..765r&link_type=abstract
Astrophysical Journal, Part 1, vol. 243, Feb. 1, 1981, p. 765-768.
Other
6
Formaldehyde, Galactic Nuclei, Hydrocyanic Acid, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Abundance, Carbon Monoxide, Free Radicals, Molecular Ions
Scientific paper
HCO(+) emission has been detected toward the nucleus of NGC 253. The line profile is similar to those of CO and HCN emission from this source. The ratio of integrated HCO(+) and HCN intensities is essentially unity, similar to the value seen in M82 and in typical Galactic giant molecular clouds. Null results have also been obtained for HCO(+) emission in several other galaxies and for HNC emission toward M82. The potential significance of HCO(+) observations as measurements of cosmic-ray densities within and among galaxies is discussed.
Palmer Patrick
Rickard Lee J.
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