Observations of MON R2 in the J = 2-1 line of carbon monoxide

Details Observations of MON R2 in the J = 2-1 line of carbon monoxide Observations of MON R2 in the J = 2-1 line of carbon monoxide

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..107w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Jan. 1979, p. 107-111.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Carbon Monoxide, Electron Transitions, Interstellar Gas, Interstellar Radiation, Cosmic Dust, Hydrogen Clouds, Infrared Spectra, Molecular Spectra, Nebulae, Optical Thickness, Spectrum Analysis, Star Clusters, Stellar Evolution

Scientific paper

Observations of the J = 2-1 CO line in the galactic source Mon R2 were obtained at 230 and 220 GHz. Antenna measurements indicate that (C-13)O is optically thick with an opacity greater than 1.1. A close similarity was detected between line intensities and spectral shapes in the (C-12)O J = 1-0 and 2-1 transitions. Evidence that (C-12)O is optically thick with both transitions in thermal equilibrium is considered.

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