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    Evolution of Luminosity Gap Statistics in Galaxy Systems with Redshift

    , M.Sc. Thesis Sharif University of Technology Erfanianfar, Ghazaleh (Author) ; Rahvar, Sohrab (Supervisor) ; Khosroshahi, Habib (Supervisor)
    Abstract
    The luminosity gap between the two brightest galaxies of the galaxy groups and clusters is a statistics criteria for studying the time of the formation of these gravitational systems. So far, the luminosity gap of galaxy systems is studied in local universe (z~0). This parameter is a good criteria to understand the structure formation models. In this project we investigate the evolution of luminosity gap statistic in high redshift universe (z~0.4). The evolution of luminosity with redshift is a proper tool for investigating the evolution of galaxies in different environments during the time