Astrometry of circumstellar masers
Astrophysics
2016-01-27 v1
Abstract
The circumstellar masers around evolved stars offer an interesting possibility to measure stellar parameters through VLBI astrometry. In this paper the application of this technique is discussed, including the accuracy and the uncertainties of the method. The different maser species (OH, H_2O, SiO) have slightly different characteristics and applications. This paper does not concern astrometry of maser spots to study the kinematics of the envelope, but concentrates on attempting to measure the motion of the underlying star.
Cite
@article{arxiv.astro-ph/0208317,
title = {Astrometry of circumstellar masers},
author = {H. J. van Langevelde and W. H. T. Vlemmings},
journal= {arXiv preprint arXiv:astro-ph/0208317},
year = {2016}
}
Comments
8 pages, 2 figures, to appear in "Mass-losing Stars and their Circumstellar Matter", eds Y. Nakada & M. Honma, Kluwer ASSL series