The galactic distribution of molecules (a CO survey)

Details The galactic distribution of molecules (a CO survey) The galactic distribution of molecules (a CO survey)

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975lnp....42..272s&link_type=abstract

H II regions and related topics; Proceedings of the Symposium, Mittelberg, Austria, January 13-17, 1975. Lecture Notes in Physic

Physics

Carbon Monoxide, Interstellar Matter, Milky Way Galaxy, Clouds, Galactic Evolution, H Ii Regions, Hydrogen, Line Spectra, Molecules, Radio Emission

Scientific paper

The J=1 to 0 emission of CO was surveyed in the galactic plane between 1= -10 deg and +90 deg with a 1 min beam sampling every degree. Molecular clouds emitting in the CO line are plentiful over the inner region of the galaxy. Their greatest number occurs in the galactic nucleus and at a radius of 5.5 kpc- a distribution similar to radio H II regions but very different from that previously derived for atomic hydrogen. The total mass in molecular clouds was found to be 1 to 3 billion solar masses, and each typically has 100,000 solar masses, an average density of 500 cm(-3), and a temperature of 7 K. These results suggest that most of the interstellar medium in the interior of the galaxy is molecular H2.

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