Proc. IAU volume 13, issue S336, P275-276 2017 DOI: 10.1017/s1743921317009565 View full text
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Alejandro Báez-Rubio

Abstract: AbstractThe detection of hydrogen radio-recombination maser lines (RRLs) toward MWC349A in the year 1989 opened the chance to place constraints on the kinematics of an ionized circumstellar disk around a massive star. Since then, a significant number of observations have allowed improving our understanding of this source to the point that we have established that its ionized wind launching occurs at a distance of ~24 au as claimed by disk wind models. On the other hand, this field of study has undergone consid…

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