Histogram of R-band absolute magnitudes for the Hα dots. The lower-luminosity objects (no cross-hatching) are the 29 Hα-selected objects, while the cross-hatched portion of the histogram represents the [O iii]-selected intermediate-redshift objects. There is no luminosity overlap between these two subsamples. The four QSOs are located on the far left with M _R brighter than −25.0.