Observations of the J = 2→1 transitions of ¹²C¹⁶O and ¹²C¹⁸O towards galactic H II regions

White, G. J.; Watt, G. D.; Beckman, J. E.; Rose, W. B. and van Vliet, A. H. F. (1980). Observations of the J = 2→1 transitions of ¹²C¹⁶O and ¹²C¹⁸O towards galactic H II regions. Astronomy & Astrophysics, 84(1-2) pp. 212–215.

URL: http://adsabs.harvard.edu/full/1980A&A....84..212W

Abstract

Observations are reported of the J = 2→1 transitions of CO and ¹²C¹⁸O at 230 and 219 GHz respectively from a number of galactic sources. A map of the central 1/2° × 1/2° of the Orion A molecular cloud is presented. The spectra are interpreted to derive molecular densities and abundance ratios in the molecular clouds observed.

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