Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217l.155c&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 217, Nov. 1, 1977, p. L155-L159.
Astronomy and Astrophysics
Astrophysics
69
Carbon Monoxide, Interstellar Matter, Milky Way Galaxy, Molecular Spectra, Astronomical Maps, Astronomical Models, Displacement Measurement, Emission Spectra, Galactic Structure
Scientific paper
Galactic CO line emission at 115 GHz has been surveyed in the region from 15 to 60 deg galactic longitude and from about -1.5 to 1.5 deg latitude. In addition to confirming the findings of previous in-plane surveys that galactic CO emission is concentrated in a ring 6 kpc in radius, a fit of a cylindrically symmetric galactic model to the observational data has provided a determination of the thickness of this molecular ring and its displacement from the conventional galactic plane, both as functions of galactocentric distance. The average half-thickness at half-maximum of the molecular ring is 59 pc, and the average displacement of the ring with respect to the galactic equatorial plane is -40 pc.
Cohen R. S.
Thaddeus Patrick
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