Two large panels: rest-frame B-band absolute magnitude (above) and rest-frame [O iii] equivalent width (below) of the EELGs (large circles) and SFGs (small dots) in zCOSMOS, as a function of redshift. Upper panel and two small panels on the right: normalized distribution of EELGs (yellow histogram) and SFG (black histogram) in zCOSMOS for these three quantities. The color code denotes bins of redshift: 0.11 ≤ z ≤ 0.30 (purple), 0.30 <z ≤ 0.50 (green), 0.50 <z ≤ 0.70 (yellow), and 0.50 <z ≤ 0.93 (red). The black dashed line delimits our selection threshold, EW(O iii) ≥ 100 Å, above which galaxies in the zCOSMOS 20k sample are considered to be EELGs.