Object size, measured by the radius enclosing half of the object’s flux, r_h, with the i magnitude. This is done here for a complete set of spectroscopically identified stars and galaxies from the VVDS-Wide survey (Garilli et al. 2008). All objects belong to tile #5, in the overlapping region with the VIPERS W4 area, and are therefore characterised by a uniform seeing (see text). Stars are plotted as blue asterisks and galaxies as red points. The locus of point-like sources is well defined, suggesting a clear strategy for star–galaxy separation as discussed in the text. The few red points lying within the stellar locus at bright magnitudes (i_AB< 21) correspond to (point-like) AGNs.