Galaxy stellar mass as a function of redshift, in a range where a cut in either K_s or [3.6] is applicable in order to build a flux limited sample. In the plot, small circles are all the COSMOS2015 galaxies in , those detected in both K_s and [3.6] (black dots) and the ones that are not (grey dots). Red filled circle (blue empty squares) show galaxies fainter than the [3.6] (K_s) magnitude limit, but detected in K_s ([3.6]). Green lines represent the stellar mass completeness limits ℳ_lim(z) (see Sect. 4.2) resulting from either the [3.6]-selected sample (solid lines) or the K_s-selected (dashed line).