PreProFit: Pressure Profile Fitter for galaxy clusters

The Mass Profile of Galaxy Clusters out to ∼

We use the public release of ≃ 100, 000 galaxies of the Two Degree Field Galaxy Redshift Survey (2dFGRS) to analyze the internal dynamics of galaxy clusters. We select 43 non-interacting clusters which are adequately sampled in the 2dFGRS public release. Members of these clusters are selected out to ∼ 2 virial radii. We build an ensemble cluster by stacking together the 43 clusters, after appro...

The peculiar velocity and temperature profile of galaxy clusters

Dynamical parameters like average velocity dispersion and temperature profile of galaxy clusters are determined using a quasi equilibrium thermodynamic theory. The calculated velocity dispersion results from theory and simulations shows a good agreement with the velocity dispersion results of (Abdullah et al. 2011). An Adaptive Mesh Refinement (AMR), Grid based hybrid code have been used to car...

Ram pressure stripping of disk galaxies in galaxy clusters

While galaxies move through the intracluster medium of their host cluster, they experience a ram pressure which removes at least a significant part of their interstellar medium. This ram pressure stripping appears to be especially important for spiral galaxies: this scenario is a good candidate to explain the differences observed between cluster spirals in the nearby universe and their field co...

Galaxy Clusters

Optical Surveys for Galaxy Clusters

Optical surveys for galaxy clusters have been the major method for creating large cluster catalogs. We give a brief review of the history of optical searches of galaxy clusters, starting from that of Abell. The traditional application of this survey method suffers from contamination due to projection of galaxies along the line of sight, which becomes increasingly more severe at higher redshift....