Fig. 7.
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Position-velocity diagram of the CO (J = 3→2) (top) and the HCO+ (J = 4→3) (bottom) along the major axis originated from the data (left) and the Gaussian fits (right). Black dots on the two top panels mark the positions of the H2O masers (Gallimore & Impellizzeri 2023). East is almost to the left, taking into account the PA used to make the diagram (PA = 114°).
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