Velocity fields (moment 1) images for CS(5–4) for the inner 40′′ (left) and 20′′ (middle) for the velocity range as in Table 2 with gray and black contours showing the CS(5–4) emission as in Fig. 5 and the 250 GHz emission as in Fig. 2, respectively. Right: velocity field image of the HVCs overlayed with the emission of CS(5–4) in black contours at the levels of [4, 8, 12] × σ (=0.08 Jy beam-1 km s-1) integrated over 103–198 km s-1 and of SiO(6–5) in green contours at the levels of [2, 4, 8, 12, 16] × σ (=0.08 Jy beam-1 km s-1) integrated over 66–191 km s-1. Gray contours show the 250 GHz emission as in the previous panels.
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