Spatial distribution (left) and color-magnitude diagram (right) of stars along the line of sight to the Tucana dSph. Black points represent the objects classified as stars in the FORS2 photometric data (see main text); red and blue dots indicate the P91-FORS2 MXU targets classified as probable members (i.e., with P >  0.05) and non-members, respectively. Yellow triangles and green squares represent the probable member stars from the P69-FORS2 and FLAMES datasets, respectively, which were added to the P91-FORS2 and analyzed through the text. The two observed FORS2 pointings are represented as large squares, while the ellipses denote the galaxy half-light radius and the spatial extension of the dataset (i.e., up to 5 × R_e ∼ R_tidal). We note that the photometric data are not corrected for reddening.