4 papers
Mass Distribution in Compact Groups
J. Perea, A. del Olmo, L. Verdes-Montenegro +3
New redshift surveys of galaxies in the field of compact groups have discovered a population of faint galaxies which act as satellites orbiting in the potential well of the bright…
On two mass estimators for clusters of galaxies
H. Aceves, J. Perea
The two most common mass estimators that use velocity dispersions and positions of objects in a stellar system, the virial mass estimator (VME) and the projected mass estimator (PM…
Estimating Masses in Clusters of Galaxies
Hector Aceves, Jaime Perea
The projected (PME) and virial mass estimator (VME) are revisited and tested using an N-body equilibrium system. It is found that the PME can overestimate the mass by approx 40% if…
The ESO Nearby Abell Cluster Survey. III. Distribution and Kinematics of Emission-Line Galaxies
A. Biviano, P. Katgert, A. Mazure +4
We have studied the frequency of occurrence, the kinematics and the spatial distribution of Emission-Line Galaxies (ELG) in clusters in the ESO Nearby Abell Cluster Survey (ENACS).…