The Composition of Interstellar Molecular Clouds |
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Authors: | Irvine William M |
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Institution: | Department of Physics and Astronomy, University of Massachusetts, Amherst 01003-4517, USA. irvine@fcrao1.phast.umass.edu |
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Abstract: | We consider four aspects of interstellar chemistry for comparison with comets: molecular abundances in general, relative abundances
of isomers (specifically, HCN and HNC), ortho/para ratios for molecules, and isotopic fractionation, particularly for the
ratio hydrogen/deuterium. Since the environment in which the solar system formed is not well constrained, we consider both
isolated dark clouds where low mass stars may form and the "hot cores" that are the sites of high mass star formation. Attention
is concentrated on the gas phase, since the grains are considered elsewhere in this volume.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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