Dynamical Substructures of Galaxy Cluster Abell 85

Details Dynamical Substructures of Galaxy Cluster Abell 85 Dynamical Substructures of Galaxy Cluster Abell 85

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010acasn..51..245w&link_type=abstract

Acta Astronomica Sinica, vol. 51, no. 3, p. 245-252

Astronomy and Astrophysics

Astronomy

Galaxies: Clusters: Individual, Galaxies: Kinematics And Dynamics, Galaxies: Cd

Scientific paper

Abell 85 is a cD galaxy cluster (z~0.055) at southern celestial sphere. Based on the spectroscopic data in literatures and SDSS (Sloan Digital Sky Survey) data, 370 member galaxies of this cluster are obtained by 3σ clipping algorithm, and the dynamical structure is investigated. By studying spatial distribution and localized variation of velocity distribution, four substructures have been found to be two merging pairs. This suggests that the galaxy cluster Abell~85 is still dynamically active, far from the status of dynamical equilibrium.

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