Galaxy HRS 157. Top left: XDSS R-band image. Top right: Hα velocity field. Middle left: Hα monochromatic image. Middle right: Hα velocity dispersion field. Bottom left: rotation curve (if computed). Bottom right: residual velocity field (if computed). The black cross is the kinematical center. In the maps, the green line is the morphological major axis, while the black/white line is the estimated kinematical major axis, its length represents the 2 × ropt. In the rotation curve, blue dots indicate the approaching side while red crosses the receding side, the black solid vertical line represents the ropt, and the black dashed line represents the r25; the blue solid line the reff (if available in Cortese et al. 2012) and the green horizontal line the H IVmax (if available in Boselli et al. 2014a); the solid black curve is the best fit Courteau function to the rotation curve.
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