Determination of Galaxy Members in Clusters
Source: Astrophysics and Space Science, Volume 288, Number 3, 2003 , pp. 245-257(13)
Abstract:A new empirical procedure is introduced to determine the confirmrd 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.
Document Type: Research Article
Affiliations: 1: King Abdulaziz University, Faculty of Science, Department of Astronomy, 21589 Jeddah, Saudi Arabia;, Email: firstname.lastname@example.org 2: King Abdulaziz University, Faculty of Science, Department of Astronomy, 21589 Jeddah, Saudi Arabia
Publication date: 2003-01-01