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Fig. 9


Comparison between UGC 4483 (blue line) and the dwarf irregular galaxy DDO 125 (UGC 7577) (red line). Top: H I surface density profiles. Middle: R-band surface brightness profiles, corrected for the inclination assuming that the disk is transparent and using the ellipticity from Swaters & Balcells (2002). Bottom: H I rotation curves (not corrected for asymmetric drift).

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