Proc. IAU volume 13, issue S336, P180-183 2017 DOI: 10.1017/s1743921317009292 View full text
L. O. Sjouwerman, Y. M. Pihlström, R. M. Rich, M. J Claussen, M. R. Morris

Abstract: AbstractCircumstellar SiO masers can be observed in red giant evolved stars throughout the Galaxy. Since stellar masers are not affected by non-gravitational forces, they serve as point-mass probes of the gravitational potential and form an excellent sample for studies of the Galactic structure and dynamics. Compared to optical studies, the non-obscured masers are in particular valuable when observed close to the highly obscured Galactic Bulge and Plane. Their line-of-sight velocities can easily be obtained wi…

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