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Clusters and Superclusters in the Sloan Survey
J. Einasto, E. Tago, M. Einasto +1
We find clusters and superclusters of galaxies using the Data Release 1 of the Sloan Digital Sky Survey. Density fields with smoothing lengthst of 10 and 0.8 Mpc/h are calculated.…
The Cluster M/L and the Value of Omega_m
H. Andernach, M. Plionis, O. L'opez-Cruz +2
From an up-to-date compilation of ACO cluster redshifts and velocity dispersions we extract a homogeneous sample of 459 clusters with robust velocity dispersion. Using the virial t…
Redshifts and Distribution of ACO Clusters of Galaxies
H. Andernach, E. Tago, M. Einasto +2
The June 2004 version of our compilation of measured redshifts for clusters in the Abell-ACO catalogue lists redshifts for 3715 clusters/subclusters in 3033 distinct (2396 A- and 6…
The Supercluster-Void Network. IV. The Shape and Orientation of Superclusters
J. Jaaniste, E. Tago, M. Einasto +3
We present a study of the shape, size, and spatial orientation of superclusters of galaxies. Approximating superclusters by triaxial ellipsoids we show that superclusters are flatt…
Current Status of the ACO Cluster Redshift Compilation
H. Andernach, Erik Tago
We present an update of our compilation of measured redshifts of galaxy clusters in the all-sky Abell catalog. In the last 7 years the number of ACO clusters with measured z has do…
A 140 Mpc Oscillation of the Abell Cluster Correlation Function
Veikko Saar, Erik Tago, Jaan Einasto +2
We have developed a parameter-independent method to detect local maxima of the two-point correlation function. By applying it to two samples of rich Abell clusters of galaxies with…