Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..830d&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 91, Dec. 1979-Jan. 1980, p. 830-839. Research supported by Williams Col
Astronomy and Astrophysics
Astronomy
10
Carbon Stars, Interstellar Matter, Line Spectra, Molecular Spectra, Nebulae, Stellar Spectra, H Ii Regions, Hydrocyanic Acid, Infrared Astronomy, Interstellar Chemistry, Late Stars, Radio Spectra, Water Masers
Scientific paper
HCN and (with three exceptions) CH emission lines have been detected from 14 molecular clouds associated with AFGL sources and/or Sharpless regions. Eleven are molecular cloud-H II region complexes. The remaining three appear to be similar (perhaps younger) objects; they are strong in the far infrared, but have no visible H II regions. Enhancement of the lower satellite transition of CH is seen in most cases. CH was also detected in association with the Herbig B8-A2e star V380 Ori. This emission was the most intense of all the CH detections. An effort was made to find a maser transition for a carbon-bearing molecule in late-type stars. A search was made for rotational transitions in the HCN bending mode (first overtone at 89.1 GHz) and stretching mode (fundamental at 88.0 GHz) as well as the CH ground state lambda-doublet in carbon stars.
Dickinson Dale F.
Dinger St. Clair A.
Gottlieb Carl A.
Gottlieb E. W.
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