4 papers
Clustering of Galaxies and Groups in the NOG Sample
G. Giuricin, S. Samurovic, M. Girardi +2
We use the two-point correlation function in redshift space, , to study the clustering of the galaxies and groups of the Nearby Optical Galaxy (NOG) Sample, which is a nearly…
Dynamical Evolution of Clusters
M. Girardi, M. Mezzetti, A. Devetak
We consider a sample of about 50 distant galaxy clusters at z>0.15 (<z> about 0.3), each cluster having at least 10 galaxies with available redshift in the literature. We select me…
Optical Substructures in 48 Galaxy Clusters
M. Girardi, E. Escalera, D. Fadda +3
We analyze the presence of substructures in a set of 48 galaxy clusters, by using galaxy positions and redshifts. We use a multi-scale analysis which couples kinematical estimators…
A Unique Mass Function from Galaxies to Clusters ?
G. Giuricin, F. Mardirossian, M. Mezzetti +2
We present an observational mass function ranging from galaxies to massive galaxy clusters, derived from direct dynamical mass estimates. Our mass function shows, in the low-mass r…