2D surface distribution of GC candidates within 0.6 × 0.6 deg² around NGC 3640 and NGC 3641. The positions of NGC 3640 and NGC 3641 are marked with the magenta and white triangles, respectively. The blue-filled plus symbol shows the location of the Dwarf 12. The lime and darkgreen crosses show the position of NGC 3643 and NGC 3630, respectively. Left panel: 2D density map of GCs candidates selected from the gri matched catalog. Right panel: the same plot but with GCs candidates selected from the ugri matched catalog.