Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-12-17
Astronomy and Astrophysics
Astrophysics
6 pages. 7 figures. Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Edito
Scientific paper
We present VLBI observations of the H$_2$O maser emission towards a selection of massive young stellar objects (YSOs). In one of these sources, IRAS20126+4104, the measured proper motions confirm that the water masers spots are tracing the very root (around 100 AU) of a conical bipolar outflow emerging near the position of the embedded YSO, and are an excellent tool to investigate the structure and kinematics of the outflow/jet. We also present preliminary results of a first epoch EVN observations of a selection of 5 high-mass YSO to assess the precise association of maser spots and molecular outflows in these sources.
Cesaroni Riccardo
Moscadelli Luca
Rioja Maria J.
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