Regions of low molecular column density near the galactic plane

Details Regions of low molecular column density near the galactic plane Regions of low molecular column density near the galactic plane

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apjs...52..289v&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 52, July 1983, p. 289-292.

Astronomy and Astrophysics

Astronomy

9

Carbon Monoxide, Celestial Reference Systems, Interstellar Extinction, Milky Way Galaxy, Millimeter Waves, Molecular Clouds, Gas Density, Hydrogen Clouds, Infrared Astronomy, Noise Temperature, Radial Velocity, Radio Sources (Astronomy), Velocity Errors

Scientific paper

A table of over 100 positions for CO line observations which have been found to be free of emission above an antenna noise temperature of 0.5 K is presented. An average upper limit on the column density of CO of 9.9 x 10 to the 16th/sq cm is inferred, corresponding to a visual extinction upper limit of 1.5 mag and an H2 column density upper limit of 1.2 x 10 to the 21st/sq cm along the observed directions. The observations from which these positions were culled and the data analysis procedure used in their selection are described. The spatial and velocity coverage of the observations is summarized, and the reference positions are listed.

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