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We have derived the galaxy luminosity function (GLF) in the cluster ofgalaxies Abell 496 from a wide field image in the I band. A single Schechterfunction reproduces quite well the GLF in the 17 <= I_{AB} <= 22 (-19.5 <= M_I<= -14.5) magnitude interval, and the power law index of this function is foundto be somewhat steeper in the outer regions than in the inner regions. Thisresult agrees with the idea that faint galaxies are more abundant in the outerregions of clusters, while in the denser inner regions they have partly beenaccreted by larger galaxies or have been dimmed or even disrupted by tidalinteractions.Comment: Accepted for publication in Astronomy & Astrophysics, final versio

Environmental effects on the galaxy luminosity function in the cluster of galaxies Abell 496