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Collisional rate coefficients of C3H2 and the determination of physical conditions in molecular cloudsCollisional excitation rates for C3H2, calculated using the coupled states approximation at temperatures of 10-30 K, are presented. C3H2 produces a number of spectral line pairs whose members are close together in frequency but arise from levels with different excitation energies. The rates are used in statistical equilibrium calculations to illustrate the excitation properties and density-dependent behavior of various C3H2 line ratios.
Document ID
19890039526
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Avery, L. W. (National Research Council of Canada Herzberg Institute of Astrophysics, Ottawa, United States)
Green, Sheldon (NASA Goddard Institute for Space Studies New York, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1989
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 337
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other