The Virgo cluster of galaxies is of great importance to study the development\nof the universe due to its close distance from the earth as well as being the\ncenter of the local super cluster. The problem that faces Virgo cluster studies\nis that it shares the same right ascension (RA) and Declination (DEC) ranges\nwith large number of background as well as foreground galaxies. This study\naims to geometrically and statistically estimate Virgo cluster membership.\nThe study employs Virgo cluster data, prepared by Harvard University. The\nradial velocity (RV) data of the Virgo cluster were treated and employed in\nexchange of missing galaxiesâ?? third dimension, taking advantage of their\nproportionality. The data were treated by K-means algorithm, using Matlab\n2014, and visual and logical exclusion of extremity galaxies to determine the\nrational center of the Virgo galaxies cluster. Results were presented, compared\nand discussed. Finally distances of galaxies from the Virgo cluster center\nwere employed along with normal probability distribution characteristics\nto identify the most probable Virgo cluster members from the range of Virgo\ncluster of galaxies. The results showed that out of 17,466 objects surveyed in\nVirgo galaxy range, only few of galaxies were estimated to be genuine Virgo\nmembers.
Loading....