Indirect observation of unobservable interstellar molecules

Details Indirect observation of unobservable interstellar molecules Indirect observation of unobservable interstellar molecules

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7719964h&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Interstellar Matter, Radio Astronomy, Carbon, Carbon Dioxide, Carboxyl Group, Chemical Reactions, Ions, Microwaves, Organic Compounds, Oxygen

Scientific paper

It is suggested that the abundances of neutral non-polar interstellar molecules unobservable by radio astronomy can be systematically determined by radio observation of the protonated ions. As an example, observed N2H(+) column densities are analyzed to infer molecular nitrogen abundances in dense interstellar clouds. The chemistries and expected densities of the protonated ions of O2, C2, CO2, C2H2 and CH4 are then discussed. Microwave transition frequencies fo HCO2(+) and C2H3(+) are estimated, and a preliminary astronomical search for HCO2(+) is described.

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