New Results on the Coma cluster: Revealing the Primary Component
F. Durret, A. Biviano, D. Gerbal, O. Le Fevre, C. Lobo, A. Mazure, E. Slezak
Abstract
Recent observations of the Coma cluster of galaxies in its central region have provided approximately 250 new redshifts - allowing a good membership criterion to be established for brighter galaxies - and magnitudes for 8000 objects in the same region derived from photometric data complete up to V26.5=22.5. A thorough structural study of the galaxy distribution of the cluster galaxies, jointly with an X-ray wavelet analysis, and with a kinematical analysis of the velocity distribution allows us to uncover a primary body of the cluster, with evidence for a velocity gradient.
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