New molecular probes of astronomical sources

Details New molecular probes of astronomical sources New molecular probes of astronomical sources

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phdt........12s&link_type=abstract

Ph.D. Thesis Illinois Univ., Urbana.

Astronomy and Astrophysics

Astronomy

1

Abundance, Astronomical Models, Molecular Clouds, Chemical Composition, Emission Spectra, Radio Telescopes

Scientific paper

Three molecules were examined to evaluate their potential for refining the knowledge of astronomical molecular sources. The primary project involved HCO in interstellar molecular clouds. The observational results include the verification of the identity of interstellar HCO, the confirmation of C(+)-HCO correlation, and the detection of an HCO abundance enhancement in the H II-molecular cloud interface region. Comparisons of these results to current molecular cloud models show good agreement between the observed and theoretical abundances. The second project consisted of a search for the HCN dimer in interstellar molecular clouds, (HCN)2, which is bound by van der Waals forces, represents a class of molecules which in not currently considered in interstellar clouds. No detections were made in the nine sources searched for (HCN)2 emission, and a comparison between (HCN)2 and HCN for Ori A indicates that the HCN dimer abundance is insufficient to appreciably affect the chemistry of the interstellar medium.

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