Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...216..185n&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 216, no. 1-2, June 1989, p. 185-192. Research supported by the Naturvetenskapl
Astronomy and Astrophysics
Astrophysics
39
Carbon Monoxide, Interstellar Matter, Molecular Clouds, Interstellar Extinction, Molecular Spectra, Optical Thickness, Spatial Distribution
Scientific paper
A complete survey of the CO J = 1-0 emission from the Southern Coalsack has been performed with 8.8-arcmin resolution. The results imply a total mass of about 3500 solar masses for the nebula, along with a CO excitation temperature of between 8 and 11 K. The CO emission has a complex structure which includes clumps, filaments, and, in some places, several velocity components. The small, dense, dark globules in the Coalsack cannot always be distinguished in the CO emission, suggesting that the CO lines become optically thick in the gas surrounding the globules. No evidence for star formation is found.
Bronfman Leonard
Nyman L.-AA.
Thaddeus Patrick
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