Abstract
We present here the optical observations of a merging galaxy cluster (z=0.178) Abell 2254 (A2254) observed by the TÜBİTAK- RTT150 Telescope in Antalya, Turkey. Its integrated CCD imaging results are reported. B, V, and R brightness values are revealed for each member of the cluster, for the first time. We present the Color Magnitude Diagram of A2254 for all galaxies. We found that the number of red galaxies is more than blue galaxies. We have obtained the galaxy luminosity function (GLF) using the B band data. Here, we aim to analyze the effects of major cluster mergers on galaxy properties for better understanding. We have seen that the GLF of Abell 2254 can be fitted with a single Schechter function in the B band. The best-fitting parameters of the Schechter function are the characteristic absolute magnitude in the B band M_B^*=〖19,67〗_(-0,96)^(+0,84) mag, and the slope at the faint end of the GLF α=〖-1,29〗_(-0,34)^(+0,23) for galaxies.
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