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The OH Circumstellar Maser in Late-Type Stars

Published online by Cambridge University Press:  14 August 2015

Nguyen-Q-Rieu ,
V. Bujarrabal ,
J. Guibert  and
A. Omont
Nguyen-Q-Rieu
Affiliation:
Observatoire de Meudon, France
V. Bujarrabal
Affiliation:
Observatoire de Meudon, France
J. Guibert
Affiliation:
Observatoire de Meudon, France
A. Omont
Affiliation:
Observatoire de Meudon, France

Extract

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A recent investigation based upon the OH luminosity distribution (Nguyen-Q-Rieu et al. 1979) has shown that Type I OH sources associated with Mira variables (OH Miras) are weak OH sources and are therefore only detected within ∼1 kpc from the Sun. Type II OH-Miras, which are more intense and rarer than Type I OH-Miras, are probably more distant objects. The group of unidentified Type II OH-IR sources probably consists of Type II OH-Miras of high OH luminosity. The IR colour index, which is usually higher for Type II sources, suggests that they have a colder and denser dust shell.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 549 - 550
Copyright
Copyright © Reidel 1980 

References

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