Context. The massive young stellar object (MYSO)
Aims: Water maser flares provide an invaluable insight into ejection events associated with accretion bursts. Although the short timescale of the 22 GHz water maser flare made it impossible to carry out a very long baseline interferometry observation, we could track it with the Karl G. Jansky Very Large Array (VLA).
Methods: The evolution of the spatial structure of the 22 GHz water masers and their association with the continuum sources in the region is studied with the VLA during two epochs, pre- and post-H2O maser flare.
Results: A drastic change in the distribution of the water masers is revealed: in contrast to the four maser groups detected during epoch I, only two newly formed clusters are detected during epoch II. The 22 GHz water masers associated with the bursting source MM1 changed in morphology and emission velocity extent.
Conclusions: Clear evidence of the influence of the accretion burst on the ejection from
Astronomy and Astrophysics
- Pub Date:
- August 2022
- stars: massive;
- stars: evolution;
- stars: formation;
- stars: jets;
- stars: individual: G358.93−0.03;
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Solar and Stellar Astrophysics