Curves for analysis of the two lowest rotational transitions of carbon monoxide using the large velocity gradient radiative transfer model

Details Curves for analysis of the two lowest rotational transitions of carbon monoxide using the large velocity gradient radiative transfer model Curves for analysis of the two lowest rotational transitions of carbon monoxide using the large velocity gradient radiative transfer model

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apjs...51..203g&link_type=abstract

Astrophysical Journal Supplement Series, vol. 51, Feb. 1983, p. 203-209.

Astronomy and Astrophysics

Astrophysics

63

Astronomical Models, Carbon Monoxide, Electron Transitions, Molecular Clouds, Molecular Rotation, Radiative Transfer, Collision Rates, Interstellar Matter, Nebulae, Velocity Distribution

Scientific paper

A spherical cloud large velocity gradient radiative transfer model and published collision rates are used to compute the carbon monoxide J = 1 - 0 antenna temperature and J = 2 - 1 to J = 1 - 0 antenna temperature ratio for a wide variety of molecular abundances, hydrogen densities, and kinetic temperatures. Calculations of collision rates are compared, and the differences which result are found to be small with respect to calibration errors and uncertainties about the applicability of the radiative transfer model. The curves presented here should be useful for determination of physical conditions and CO column densities from observations of molecular clouds.

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