Left and middle panel: colour−magnitude diagrams (R − J, R) and (V − J, V) for known (blue) and newly proposed (red) members of the β-Pic association. The uncertainties are derived using the upper and lower boundaries of the R and V magnitude values, respectively, compiled from our photometric search. In most cases those markers without uncertainties only have one magnitude value. Right panel: colour−magnitude diagram (J − K, J) for known and newly proposed members. The solid and dotted line is the isochrone of Baraffe et al. (2015) using the age of the association and the zero-age main sequence (ZAMS), respectively.