Open Access

Fig. 7.

image

Relation between Vmax, HI and Vmax, Hα. The red solid and blue dashed lines represent the OSL bisector regression applied to a) the whole Fabry–Perot sample, and b) ignoring galaxies with Flag “B”. Colors, symbols and markers are as in Fig. 3. Fabry–Perot data from the literature (gray symbols) are classified as: stars for galaxies belonging to the Loose Groups Survey, rhombuses for galaxies belonging to the Virgo Survey, and pentagons for galaxies belonging to the GHASP survey.

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