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Hot Cores and Cold Grains

Published online by Cambridge University Press:  07 August 2017

C. M. Walmsley  and
P. Schilke
C. M. Walmsley
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, F.R. Germany
P. Schilke
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, F.R. Germany

Abstract

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A review is given of the evidence for depletion of heavy elements in dense molecular cloud clumps onto dust grain surfaces. Particular attention is given to the recent controversy over the nature of the dense clumps in NGC 2024. We also discuss recent ammonia observations of“hot core” regions and evidence that the NH3 abundance is greatly enhanced.

Type
Quiescent Clouds and Regions of Star Formation
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 251 - 258
Copyright
Copyright © Kluwer 1992 

References

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