Fig. 10
Spectra of the H2O maser features integrated over different regions in the image cubes from the VERA monitoring data: (a) the whole emission region around NIRS 3; (b) the NE lobe; (c) the central (continuum) position; and (d) the SW lobe.A vertical dashed line indicates the LSR velocity of 6.4 km s−1, corresponding to the brightest components. Panel b: one can see the profiles of the weakest components at ~15 km s−1, while the brightest features at 6.4 km s−1 are better seen in panel a.
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