A study of CO emission from two Scd galaxies - IC 342 and NGC 6946

Details A study of CO emission from two Scd galaxies - IC 342 and NGC 6946 A study of CO emission from two Scd galaxies - IC 342 and NGC 6946

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223..803m&link_type=abstract

Astrophysical Journal, Part 1, vol. 223, Aug. 1, 1978, p. 803-810.

Astronomy and Astrophysics

Astrophysics

74

Carbon Monoxide, Galactic Structure, Interstellar Gas, Molecular Spectra, Abundance, Hydrogen Atoms, Hydrogen Clouds, Line Spectra

Scientific paper

In a search for CO emission from an inhomogeneous sample of late-type galaxies, CO emission was detected in two: IC 342 and NGC 6946. Partial mapping of these nearly face-on galaxies shows that the CO emission peaks sharply at the nuclei but is present at a detectable level over most of the disks out to 8-10 kpc. A look at all galaxies studied in CO to date reveals (1) a tendency for galaxies with nuclear minima in their H I surface densities to have nuclear maxima in their H2 surface densities, and (2) no marked tendency, within the present sample, for the presence or abundance of molecular gas in spirals to be correlated with Hubble type.

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