Details of the M-T Relation for Clusters of Galaxies
Abstract
We present results on the mass determination using two samples of clusters of galaxies. One sample is constructed with accent on the completeness of the sample, while advantage of the other is a use of the temperature profiles, derived with ASCA. We obtain remarkably similar results for both samples, which are significantly different in both normalization and the slope from prescriptions of self-similar collapse and hydrodynamical simulations. We discuss the origin of these discrepancies and also combine the X-ray mass with velocity dispersion measurements to provide a comparison with high-resolution dark matter simulations. Finally, we discuss on the importance of the cluster formation epoch in the observed M-T relation.Keywords
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