Authors: R. A. Burns, T. Handa, H. Imai, T. Nagayama, T. Omodaka, T. Hirota, K. Motogi, H. J. van Langevelde, W. A. Baan
Journal: Transactions of IAA RAS vol. 40
Pages: 89 - 93
Keywords: Masers, Astrometry, Massive Star Formation, AFGL 5142
In this contribution we present new VLBI observations of 22 GHz H₂O masers in the well-known massive star forming region, AFGL 5142. The masers exhibit prototypical well-defined symmetric bowshocks about a central driving source, in addition to revealing the presence of episodic ejection. One water maser located close to the central accreting star shows clear non-linear motion in the sky-plan, possibly indicating the influence of forces near the star/disk. These phenomena (episodic ejection and disk-jet systems) highlight similarities in the processes of low- and high-mass star formation.