A search for carbon monoxide in clumpy irregular galaxies

Details A search for carbon monoxide in clumpy irregular galaxies A search for carbon monoxide in clumpy irregular galaxies

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..415g&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 94, June-July 1982, p. 415-420.

Astronomy and Astrophysics

Astronomy

19

Abundance, Astronomical Spectroscopy, Carbon Monoxide, Galactic Structure, Interstellar Gas, Molecular Clouds, Hydrogen Atoms, Space Density

Scientific paper

The failure to detect the 115-GHz line of CO in the galaxies Ma 7, Ma 8, Ma 296, Ma 297, Ma 325, Ma 432, and VV 523 leads to limits on the column density and mass of carbon monoxide. The upper limits to the masses of CO in each of these galaxies, relative to the masses of atomic hydrogen, and of the entire galaxies, tend to be comparable to or less than what is observed for our galaxy. If all spectra are averaged together to give a limit for a composite galaxy, the mass of CO relative to that of atomic hydrogen is about 8 times less than observed for our galaxy. An appendix gives the details of a method to relate CO intensity to CO column density, first used by Gordon and Burton (1976).

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