Molecular gas temperature and density in spiral galaxies

Details Molecular gas temperature and density in spiral galaxies Molecular gas temperature and density in spiral galaxies

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..176w&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 176-177 (SEE N93-26706 10-90)

Physics

Gas Temperature, Molecular Gases, Rotational Spectra, Spiral Galaxies, Maffei Galaxies, Molecular Excitation

Scientific paper

We combine beam-matched CO-13, CO-12 J = 3 yields 2 and J = 2 yields 1 line data to infer the molecular gas excitation conditions in the central 500 to 1600 pc diameters of a small sample of infrared-bright external galaxies: NGC253, IC342, M 83, Maffei 2, and NGC6946. Additional observations of the J = 1 yields 0 lines of C-18O and CO-13 set limits on the opacity of the CO-13 J = 1 yields 0 line averaged over the central kiloparsec of these spiral galaxies.

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