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Fig. 4.


Kinematic maps of the core of the Hydra I cluster. Upper left panel: line-of-sight recession velocity, VLOS for spectra with S/N > 5 per Å. The results of previous long-slit data (Ventimiglia et al. 2010; Richtler et al. 2011) are shown as well. Upper right panel: line-of-sight velocity dispersion, σLOS. Only results with S/N > 10 per Å are shown. Bottom left panel: higher moment h3 (skewness) for data with S/N > 15. Bottom right panel: higher moment h4 (kurtosis) for data with S/N > 15. In all maps, V-band contours are shown in black, ranging from 20 to 23.5 mag arcsec−2 in steps of 0.5 mag arcsec−2, from Arnaboldi et al. (2012). In all panels, north is up and east is left.

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