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Ammonia Observations of the Molecular Cloud Near S106

Published online by Cambridge University Press:  14 August 2015

L.T. Little ,
G.H. Macdonald ,
P.W. Riley  and
D.N. Matheson
L.T. Little
Affiliation:
1DERAD, Observatoire de Meudon, 92190 Meudon, France.
G.H. Macdonald
Affiliation:
2Electronics Laboratory, University of Kent at Canterbury, UK
P.W. Riley
Affiliation:
2Electronics Laboratory, University of Kent at Canterbury, UK
D.N. Matheson
Affiliation:
3SRC Appleton Laboratory, Chilbolton Observ., Stockbridge, UK

Extract

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The region surrounding the optical nebula S106 has been mapped in the J=1,K=1 (1,1) transition of ammonia with a 2.2 arc min. beam. The source is observed as two components with the HII region sandwiched between them. It is likely that the asymmetry of the optical nebula is produced by preferential escape of u.v. radiation from the central source of excitation in directions of reduced density within the molecular condensation. Observations of the (1,1) and (2,2) transitions yield a kinetic temperature for the NH3 molecules in the range 18-22K. There is evidence for “clumpiness” in the distribution of matter.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 89 - 90
Copyright
Copyright © Reidel 1980 

References

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