Fig. 5
Moment-0 map of HI after correcting for the absorption towards NGC 4418, as described in Sect. 3.4. More emission is seen close to NGC 4418 than in Fig. 1b. The red polygons mark three regions where pixels were summed to measure the flux values listed in Table 2. Both greyscale and contours show the moment-0 map, with the same contours as in Fig. 1b.
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