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The Relative Distribution of Ammonia and Cyanobutadiyne Emission in Heiles 2 Dust Cloud

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:
1DERAD, Observatoire de Meudon, 92190 Meudon, France
P. W. Riley
Affiliation:
1DERAD, Observatoire de Meudon, 92190 Meudon, France
D. N. Matheson
Affiliation:
1DERAD, Observatoire de Meudon, 92190 Meudon, France

Extract

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A map of the NH3 (1,1) emission in Heiles 2 dust cloud, observed with 2.2 arc min. resolution, is presented and compared with that of the J = 9 → 8 transition of HC5N. Although the distribution of both molecules lies on a ridge, there is a marked anti-correlation in the observed antenna temperatures of the two molecules along it. This appears to be best explained as a variation in the relative abundances of the two molecules along the ridge by a factor 8-20 in a distance of 1018 cm.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 67 - 68
Copyright
Copyright © Reidel 1980 

References

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