Determination of Galaxy Members in Clusters |
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| Authors: | Fadel A Bukhari Lawrence E Cram |
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| Institution: | (1) Faculty of Science, Department of Astronomy, King Abdulaziz University, 21589 Jeddah, Saudi Arabia |
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| Abstract: | A new empirical procedure is introduced to determine the confirmed galaxy members of a cluster. The method depends on both
the projected distances of galaxies in the cluster field from the cluster centre and their radial velocities. Galaxies of
the main body of the cluster are selected first, then the method works iteratively by increasing the standard values of the
relative radial distance and velocity until all galaxies belong to the cluster are included. The general apparent shape of
the cluster will result from the distribution of the celestial coordinates of the cluster members.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | galaxies redshifs galaxy clusters: apparent shapes galactic content |
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