TY - BOOK AU - Mohamed Hamdy Abdullah AU - Gamal B. Ali , AU - Mohamed A. Rassem , TI - Studing the dynamical properties of some galaxy clusters / PY - 2009/// CY - Cairo : PB - Mohamed Hamdy Abdullah , KW - Clusters KW - Galaxies KW - General - cosmology N1 - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology; Issued also as CD N2 - Using the DR{u06F7} of SDSS we construct a sample of ٤٢٣٨٢ galaxies with redshifts in the region of 20 galaxy clusters reaching up to {︣u301C} ٥{u٠٠آء} . Using two successive iterative methods the adaptive kernel method and the spherical infall model we obtained {u06F3}{u06F2}٥٦ members belonging to the studied sample . We present the two - dimensional optical map for each cluster using the adaptive kernel method to determine their centers UR - http://172.23.153.220/th.pdf ER -