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The Disruption of the Molecular Cloud Associated with the North America and Pelican Nebulae

Published online by Cambridge University Press:  14 August 2015

John Bally
John Bally*
Affiliation:
Physics and Astronomy Department University of Massachusetts Amherst, Massachusetts 01003

Extract

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Giant molecular clouds can be destroyed in several ways: by conversion of gas into stars; by dissociation of H2 into HI; by ionization and formation of HII regions; and by dispersal of the cloud into cloudets. The relative importance of these processes can be assessed by observations of evolved HII regions and associated molecular clouds. A number of such complexes have been studied in 12CO at the Five College Radio Astronomy Observatory (FCRAO) as part of an extensive investigation of clouds associated with about 60 Sharpless HII regions. A particularly clear example of cloud disruption is found in the case of W80, the North America and Pelican Nebulae in Cygnus (Bally and Scoville 1980).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 151 - 156
Copyright
Copyright © Reidel 1980 

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