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Phase–Referencing Observations of Galactic Circumstellar Masers

Published online by Cambridge University Press:  12 April 2016

Huib Jan van Langevelde ,
Loránt O. Sjouwerman ,
Philip J. Diamond ,
Richard T. Schilizzi  and
Alain Baudry
Huib Jan van Langevelde
Affiliation:
Joint Inst. for VLBI Europe, Postbus 2, 7990 AA Dwingeloo, the Netherlands
Loránt O. Sjouwerman
Affiliation:
Onsala Rymdobservatorium, S-43992, Sweden
Philip J. Diamond
Affiliation:
National Radio Astronomy Observatory, Socorro, NM 87801, U.S.A.
Richard T. Schilizzi
Affiliation:
Joint Inst. for VLBI Europe, Postbus 2, 7990 AA Dwingeloo, the Netherlands
Alain Baudry
Affiliation:
Observatoire de Bordeaux, BP 89, F-33270 Floirac, France

Abstract

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Two projects are discussed in which a phase referencing technique is used to determine stellar parallaxes and/or proper motions by means of the circumstellar masers. The observations are special in the sense that both continuum and line sources need to be detected. To obtain stellar motions assumptions on the location of the maser with respect to the star need to be made.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 361 - 362
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

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