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Fig. 4.

image

Circular velocity as a function of absolute r band magnitude of the SAB galaxies successfully analysed with the TW method (filled squares) and the galaxy sample of Reyes et al. (2011) (open squares). The dashed line is the best-fitting relation of Reyes et al. (2011) and the dotted lines bracket the region of 3σ deviation in log(Vcirc).

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