Fig. 4.
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Top Panel: position-velocity diagram taken along the major axis of the H I disk (PA = 141°) with a slit of 20″. Contour levels are at 5 × 1017 cm−2 and 1 × 1018 cm−2. Bottom Panel: position-velocity diagram taken along the minor axis of the H I disk (PA = 51°) with an analogous slit, equal to the resolution of the observations. Contours are as in the top panel.
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