Galaxy cluster mass profiles
نویسندگان
چکیده
منابع مشابه
Mass Profiles of Galaxy Clusters from the Projected Phase-space Distribution of Cluster Members
I review our current knowledge of the mass distribution in clusters, as obtained from the analysis of the projected phase-space distribution of cluster galaxies. I discuss the methods of analysis, their relative advantages and disadvantages, and their reliabilities. I summarize the most recent and important results on the mass distributions of galaxy systems, from nearby to medium-distant syste...
متن کاملCluster Mass Profiles from Weak Lensing II
When a cluster gravitationally lenses faint background galaxies, its tidal gravitational field distorts their shapes (shear effect) and its magnification effect changes the observed number density. In Schneider, King & Erben (2000) we developed likelihood techniques to compare the constraints on cluster mass profiles that can be obtained using the shear and magnification information. This work ...
متن کاملTracing the Mass Profiles of Galaxy Clusters with Member Galaxies
The mass distribution of galaxy clusters can be determined from the study of the projected phase-space distribution of cluster galaxies. The main advantage of this method as compared to others, is that it allows determination of cluster mass profiles out to very large radii. Here I review recent analyses and results on this topic. In particular, I briefly describe the Jeans and Caustic methods,...
متن کاملConstraining Galaxy Mass Profiles with Strong Gravitational Lensing
Measured time delays between the images of a gravitationally lensed source can lead to a determination of the Hubble constant (Ho), but only if the lensing mass distribution is well understood. The inability to sufficiently constrain galaxy mass models results in large uncertainties on the derived Ho, and severely hampers the cosmological application of this otherwise elegant method. At the sam...
متن کاملThe Average Mass and Light Profiles of Galaxy Clusters
The systematic errors in the virial mass-to-light ratio, Mv/L, of galaxy clusters as an estimator of the field M/L value are assessed. We overlay 14 clusters in redshift space to create an ensemble cluster which averages over substructure and asymmetries. The combined sample, including background, contains about 1150 galaxies, extending to a projected radius of about twice r200. The radius r200...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2006
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2006.10199.x