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OH masers in envelopes of late type stars

Published online by Cambridge University Press:  04 August 2017

A.M. Le Squeren ,
P. Sivagnanam ,
F. Tran Minh ,
M. Dennefeld  and
F. Foy
A.M. Le Squeren
Affiliation:
[1]: Observatoire de Paris, section de Meudon, 92190-Meudon
P. Sivagnanam
Affiliation:
[1]: Observatoire de Paris, section de Meudon, 92190-Meudon
F. Tran Minh
Affiliation:
[1]: Observatoire de Paris, section de Meudon, 92190-Meudon
M. Dennefeld
Affiliation:
[2]: Institut d'Astrophysique de Paris, 75014-Paris France
F. Foy
Affiliation:
[1]: Observatoire de Paris, section de Meudon, 92190-Meudon

Abstract

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Two studies of OH maser emission in envelopes of late type stars -miras (3) and OH/IR objects- have been performed with the Nancay radio-telescope. Mainly, the OH miras are found with thicker dust envelopes than the non OH ones. A sample of unidentified IRAS point sources selected on their colors has been observed. We have detected 46 new OH sources. The OH detection rate is a function of the galactic longitude and of the IRAS spectral classification.

Type
Circumstellar Shells and Envelopes
Information
Symposium - International Astronomical Union , Volume 122: Circumstellar Matter , 1987 , pp. 243 - 244
Copyright
Copyright © Reidel 1987 

References

1. Lockwood, G.M.: 1972, Ap. J. Suppl., 24, 75.CrossRefGoogle Scholar
2. Olnon, F., Baud, B., Habing, H.J., De Jong, T., Harris, S., and Pottasch, S.: 1984, Ap. J., 278, L41 Google Scholar
3. Sivagnanam, P., Le Squeren, A.M., Foy, F. (in preparation) Google Scholar