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    • Keywords


      Galaxies: clusters; Galaxies evolution; Galaxies: photometry.

    • Abstract


      The rest-frame $(g–r) /M_r$ color–magnitude relations of 12 Abell-type clusters are analyzed in the redshift range ($0.02\lesssim z \lesssim 0.10$) and within a projected radius of 0.75 Mpc using photometric data from SDSS-DR9. We show that the color–magnitude relation parameters (slope, zero-point, and scatter) do not exhibit significant evolution within this low-redshift range. Thus, we can say that during the look-back time of $z \sim 0.1$ all red sequence galaxies evolve passively, without any star formation activity.

    • Author Affiliations



      1. Department of Physics, College of Science, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq.
      2. Development Center for Research and Training (DCRT), University of Human Development, Sulaimani, Kurdistan Region, Iraq.
    • Dates

  • Journal of Astrophysics and Astronomy | News

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      Posted on January 27, 2016

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