Fig. A
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Moment maps of H2 CO(30,3−20,2). Panel a: Velocity-integrated intensity (moment 0) map over [50, 60] km s−1. Panel b: Mean velocity (moment 1) map. Panel c: Velocity dispersion (moment 2) map. The ALMA beam size is shown at the bottom left. Note that for all panels, only effective emission above 3 σH2CO(σH2CO=0.004 Jy beam−1) is visualized.
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