Luminosity function of the galaxies within r200 from the group center (red points). The Schechter fits of the composite luminosity functions for systems with Δm12< 0.5 and Δm12> 1.5 from Zarattini et al. (2015) are also overplotted with filled and empty black circles, respectively. The gray full line represents the Schechter fit of the LF for groups with log (M) = 13.56 from Zandivarez & Martínez (2011). All LFs have been normalized in the magnitude interval 14 <mr< 18.
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