On the spiral structure in the galactic distribution of CO clouds

Details On the spiral structure in the galactic distribution of CO clouds On the spiral structure in the galactic distribution of CO clouds

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..92..181s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 92, no. 1, May 1983, p. 181-190. Research supported by the Japan Society f

Astronomy and Astrophysics

Astrophysics

2

Astronomical Models, Carbon Monoxide, Emission Spectra, Mass Distribution, Milky Way Galaxy, Spiral Galaxies, Density Wave Model, Galactic Rotation, Interstellar Gas, Kinematics, Line Spectra

Scientific paper

The CO distribution in the Galaxy is investigated through an analysis of longitude-velocity diagrams of CO emission lines for the two longitude ranges 20° < l < 80° and 105° < l < 140°. For the kinematics of the Galaxy the authors adopt three typical models; the circular rotation, the linear density waves, and the galactic shock waves. It is shown that the distribution and kinematics of CO clouds are consistent with the predictions of the density wave model and the galactic shock model and that the observed data of CO emissions do not contradict the claim that the CO clouds form spiral arms.

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