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Dynamical evolution and molecular abundances of interstellar cloudsDynamical models are presented that start with interstellar gas in an initial diffuse state and consider their gravitational collapse and the formation of dense cores. Frozen-in tangled magnetic fields are included to mimic forces that might oppose gravitational contraction and whose effectiveness may increase with increasing core densities. Results suggest the possibility that dense cloud cores may be dynamically evolving ephemeral objects, such that their lifespan at a given core density decreases as that density increases.
Document ID
19910051941
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Prasad, Sheo S.
(Lockheed Research Laboratories Palo Alto, CA, United States)
Heere, Karen R.
(Science Applications International Corp. Los Altos, CA, United States)
Tarafdar, Shankar P.
(Tata Institute of Fundamental Research Bombay, India)
Date Acquired
August 15, 2013
Publication Date
May 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 373
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A36564
Distribution Limits
Public
Copyright
Other

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