HCN, X-ogen /HCO+/, and U90.66 emission spectra from L134

Details HCN, X-ogen /HCO+/, and U90.66 emission spectra from L134 HCN, X-ogen /HCO+/, and U90.66 emission spectra from L134

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204l.139s&link_type=abstract

Astrophysical Journal, vol. 204, Mar. 15, 1976, pt. 2, p. L139-L142.

Other

36

Abundance, Emission Spectra, Interstellar Matter, Microwave Spectra, Molecular Spectra, Nebulae, Astronomical Spectroscopy, Cyanides, Electron Transitions, Hydrogen Compounds, Interstellar Radiation, Millimeter Waves, Uranium Isotopes

Scientific paper

Millimeter-wave emission lines from HCN, X-ogen (HCO(+)), and U90.66 from the direction of the cool dust cloud L134. This is the first reported detection of HCN and U90.66 in a dark nebula, and the lines are the narrowest reported to date for all three species. The HCN radial velocity was used to decrease the uncertainties of the previously measured X-ogen and U90.66 rest frequencies. The emission profile of U90.66 was found to be consistent with the expected profile for hydrogen isocyanide (HNC). The observations suggest that L134 and other cool dust clouds should be superb objects for future high-resolution measurements of other interstellar molecules which have never been detected spectroscopically in the laboratory.

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