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Fig. 12.

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Natural weighted HI moment maps of VLA overlaid on the NGVS g-band image. Left panel: Contours of the moment 0 (i.e., intensity) map plotted as cyan curves. The contours are respectively for HI column densities of (3, 10, 20, 30, 40) × 1.9 × 1019 cm−2. Middle panel: HI velocity field contours drawn at 2 km s−1 intervals. The white contour represents the systemic velocity of 2531 km s−1. The galaxy’s optical and HI major axes are shown as dashed lines in lime (PA = 61°) and blue (PA = 90° with maximum velocity gradient), respectively. Right panel: HI velocity dispersion contours drawn at 3, 6, 9, 12 km s−1. The yellow cross marks the optical center of VCC 479. The synthesized beam is represented by a cyan-filled ellipse in the upper right corner of each panel.

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