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a map of 22 GHz water masers tracing a young jet in a massive young stellar object (AFGL 5142)

Image Credit: Ross Burns

Internal motions of water masers in AFGL 5142.

The figure shows a magnified view of the MM1 region. Masers trace three arc structures contained in a region of about 300 × 300 mas. There exists one maser arc to the North West of the system center, and two proximate and similarly oriented arcs lying to the South East, one closer and one further from the system center.