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Fig. A.1

Position-velocity diagram of CO 2−1 (black contours) and SiO 5−4 (gray-scale and red contours) along the PA of the high-velocity molecular jet (PAjet ~ −17°). Horizontal and vertical dashed lines mark the systemic velocity, Vsys = + 2.7 km s-1, and the continuum peak. The first contour is at 5σ with steps of 3σ.
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