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1996A&A...313..269T - Astronomy and Astrophysics, volume 313, 269-276 (1996/9-1)
The distribution of CS and NH3 in star-forming regions.
TAYLOR S.D., MORATA O. and WILLIAMS D.A.
Abstract (from CDS):
The molecules CS and NH3 are expected on theoretical grounds to trace high density interstellar gas in a similar fashion. However, observations show that CS is often widespread while NH3 appears concentrated in dense cores. This result is interpreted here in terms of a clumpy model of molecular clouds, and a differential rate for chemistry of the two species. These CS cores are unresolved and numerous; most of them probably disperse rather than collapse to form a star.
Abstract Copyright: ∼
Journal keyword(s): ISM: clouds - molecules - structure - molecular process
Simbad objects: 4
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