GALFIT model of the VLT/FORS1 image obtained with “allmask” (see right panel of Fig. 1). Left panel: VLT/FORS1 V band image. Full and dashed red lines indicate the major axis at PA = 32°, and the minor axis, respectively. Center panel: combined 2D GALFIT models for NGC 3311 and NGC 3309. Right panel: residual image, showing extra light associated with the NE outer halo of NGC 3311, a region of negative residuals  ~ 60′′ south west of NGC 3311, and preliminary evidence of two tidal streams around HCC 026 and HCC 007, outlined by the red- and blue dashed curves. The image size in all panels is , and darker colors indicate brighter regions.