S-tree Analysis of the Substructure of the Coma Cluster
Gurzadyan, V. G. · Mazure, A.
Original · EN
The S-tree method is used to estimate the redshift of the core of Coma cluster - cz = 6953 km s⁻¹ and dispersion σ=949 km s⁻¹. The existence of three subgroups of galaxies is revealed, one of them is associated with the cD galaxy NGC 4874, another - with NGC 4889. It is argued that these subgroups are 'galaxy associations', i.e. galactic dynamical entities moving through the main cluster. The non-stationarity of the dynamical processes ongoing in the Coma core is concluded.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.