CoMaLit - IV. Evolution and self-similarity of scaling relations with the galaxy cluster mass

Journal
Date Issued
2015
Author(s)
•
DOI
Description
MS thanks Adam Mantz, Kenneth Rines, and Alex Saro for clarifying some aspects of their works. MS acknowledges financial contributions from contracts ASI/INAF n.I/023/12/0 ‘Attività relative alla fase B2/C per la missione Euclid’, PRIN MIUR 2010-2011 ‘The dark Universe and the cosmic evolution of baryons: from current surveys to Euclid’, and PRIN INAF 2012 ‘The Universe in the box: multiscale simulations of cosmic structure’. SE acknowledges the financial contribution from contracts ASI-INAF I/009/10/0 and PRIN-INAF 2012 ‘A unique data set to address the most compelling open questions about X-Ray Galaxy Clusters’. This research has made use of NASA's Astrophysics Data System (ADS) and of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Abstract
The scaling of observable properties of galaxy clusters with mass evolves with time. Assessing the role of the evolution is crucial to study the formation and evolution of massive haloes and to avoid biases in the calibration. We present a general method to infer the mass and the redshift dependence, and the time-evolving intrinsic scatter of the mass-observable relations. The procedure self-calibrates the redshift-dependent completeness function of the sample. The intrinsic scatter in the mass estimates used to calibrate the relation is considered too. We apply the method to the scaling of mass M_∆ versus line-of-sight galaxy velocity dispersion σv, optical richness, X-ray luminosity, LX, and Sunyaev-Zel'dovich signal. Masses were calibrated with weak lensing measurements. The measured relations are in good agreement with time and mass dependences predicted in the self-similar scenario of structure formation. The lone exception is the L_X - M_∆ relation, whose time evolution is negative in agreement with formation scenarios with additional radiative cooling and uniform preheating at high redshift. The intrinsic scatter in the σ _v - M_∆ relation is notably small, of the order of 14 per cent. Robust predictions on the observed properties of the galaxy clusters in the Cluster Lensing And Supernova survey with Hubble sample are provided as cases of study. Catalogues and scripts are publicly available at http://pico.bo.astro.it/̃sereno/CoMaLit/.
Volume
450
Issue
4
Start page
3675
Uri
Url
Issn Identifier
0035-8711
Ads BibCode
2015MNRAS.450.3675S
Rights
open.access
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