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Fig. B.1

image

Channel maps of CO, SiO and SO at VLSR = − 92.15 km s-1 (blue contours) with the positions of the [FeII] jet (green segment), H2 inner bubble, arcs and vertical linear feature (in red) from HC14 superimposed. The NIR source was assumed to be either VLA4A (top row) or VLA4B (bottom row). The latter is unambiguously favored.

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