Hydrogen column density as a function of galaxy stellar mass. Top three rows: distribution of “effective” hydrogen column density for starlight obtained from the ratio of intrinsic and attenuated fluxes in each JWST filter we have considered (Eq. (9)). Bottom row: distribution of hydrogen column density seen by the AGN as a function of galaxy stellar mass at z = 6. This is the column density integrated above the dust sublimation radius, for example the column density that enters into calculating dust absorption. The red points highlight the cases that host a cLRD meeting the UNCOVER selection.