Equivalent Width of the Lyα line as a function of the absolute magnitude at 1600 Å, for the objects with photometric counterpart, in three different redshift bins. Objects with detected continuum are shown as filled dots. Objects without a detected continuum, for which the equivalent width is only a lower limit, are shown as upperward arrows. The dotted line shows MUV = −21.5: objects brighter than this limit show a deficit of large equivalent widths (EW0 > 20).
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