The distribution of CS and NH_3_ in star-forming regions.

Details The distribution of CS and NH_3_ in star-forming regions. The distribution of CS and NH_3_ in star-forming regions.

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...313..269t&link_type=abstract

Astronomy and Astrophysics, v.313, p.269-276

Astronomy and Astrophysics

Astrophysics

37

Ism: Clouds, Molecules, Structure, Molecular Process

Scientific paper

The molecules CS and NH_3_ are expected on theoretical grounds to trace high density interstellar gas in a similar fashion. However, observations show that CS is often widespread while NH_3_ 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.

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