Computer Science
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phdt.........5b&link_type=abstract
Ph.D. Thesis Columbia Univ., New York, NY.
Computer Science
Carbon Monoxide, Cosmic Dust, Emission Spectra, Molecular Clouds, Nebulae, Gamma Ray Spectra, Luminosity, Spatial Resolution
Scientific paper
The large scale survey of carbon monoxide emission from the dark nebulae in Taurus and Perseus is examined. The CO spectra at 4395 points were obtained within an area of about 800 square degrees generally west of the galactic anti-center. The spatial resolution of the instrument was 8 arcminutes and the velocity was 2.6 km/s. The CO emission is strongest wherever extinction by dust is the greatest, spilling over the apparent outer boundaries of the dust clouds observed optically. Combining CO velocity for the nebulae with optically determined disturbances shows that the clouds in the survey area form several layers. The molecular cloud mass closest to the Sun in the Taurus and Auriga complex. Cloud masses were determined from integrated CO emission intensity alone by assuming that gamma-ray emission intensities can be used to relate H2 column densities to CO emission intensities. From CO emission alone, then, the cloud masses for the major complexes are presented.
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