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Survey of NH3 in the Southern Hemisphere

Published online by Cambridge University Press:  25 April 2016

E. Scalise Jr., ,
R. E. Schaal ,
Y. Bakor ,
J. W. Vilas Boas  and
P. C. Myers
E. Scalise Jr.,
Affiliation:
CRAAMIINPE: Instituto de Pesquisas Espaciais, São Paulo, Brasil
R. E. Schaal
Affiliation:
CRAAMIINPE: Instituto de Pesquisas Espaciais, São Paulo, Brasil
Y. Bakor
Affiliation:
CRAAMIINPE: Instituto de Pesquisas Espaciais, São Paulo, Brasil
J. W. Vilas Boas
Affiliation:
CRAAMIINPE: Instituto de Pesquisas Espaciais, São Paulo, Brasil
P. C. Myers
Affiliation:
Massachusetts Institute of Technology
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Extract

Ammonia was searched in the direction of 46 sources placed in the southern hemisphere where H2CO or H2O was detected previously. Observations were carried out at Itapetinga Radio Observatory, Atibaia, Brazil using a 13.7 m paraboloid. The receiver used for these observations had a K-band ruby travelling wave maser as a preamplifier and the system temperature ranged from 250 to 300K. All sources were observed at least twice, each observation lasting for 30 minutes. The filter bank used consisted of 47 contiguous channels with 100 kHz bandwidth. Results are presented on Table 1 — Positive results and Table 2 — Negative results.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 2 , 1981 , pp. 250 - 251
Copyright
Copyright © Astronomical Society of Australia 1981

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