Location of dwarf galaxies and long slit on the residual VLT/FORS1 V-band image from Fig. 11. Here the orange circles indicates the dwarf galaxies within 100 kpc of the NGC 3311 center; their velocities are reported on the image. The blue circle shows the dwarf galaxy HCC 026, and the red diamond indicates HCC 007. The object to the right of HCC 007 is a foreground star. The yellow line centered on HCC 026 at PA = 142° illustrates the position and orientation of the long slit used for the kinematic measurements in Ventimiglia et al. (2010) and in this paper. The orange-dashed section of the slit identifies the area where the V_LOS, σ measurements at R = 100′′ were taken (Ventimiglia et al. 2010); see Sect. 5.1. The red and green parts of the line depict the slit sections used to measure the mean velocity of the tidal stream. The FoV is ; north is up and east to the left.