First moment map of the H₂O masers (color image) and maps of the continuum emission (color contours). The black contours overlayed on the maser velocity map correspond to the integrated intensity of the maser spots, with levels starting from the 5σ level with 5σ steps. The black, cyan, and magenta contours represent the first 3 contours of the 890 μm, 6 cm, and 3.8 cm continuum emission, respectively (the same as in Fig. 2). The yellow triangles and green-filled circles show, respectively, the positions of the H₂O (Hofner & Churchwell 1996) and OH (Garay et al. 1985) masers. The numbers associated with the yellow triangles are used to identify the maser features as done by Hofner & Churchwell (1996).