Analysis of the Amplitude of the Sunyaev-Zel'dovich Effect out to Redshift z=0.8
arXiv:1704.09005 · doi:10.3847/1538-4357/aa6d81
Abstract
The interaction of the cosmic microwave background (CMB) with the hot gas in clusters of galaxies, the so-called Sunyaev--Zel'dovich (SZ) effect, is a very useful tool that allows us to determine the physical conditions in such clusters and fundamental parameters of the cosmological models. In this work, we determine the dependence of the the SZ surface brightness amplitude with redshift and mass of the clusters. We have used PLANCK+IRAS data in the microwave-far infrared and a catalog with >10^5 clusters of galaxies extracted from the SDSS by Wen et al. (2012). We estimate and subtract the dust emission from those clusters. From the residual flux, we extract its SZ flux densities. The absolute value of the SZ amplitude indicates that the gas mass is around 10% of the total mass for cluster masses of M~10^{14} M_sun. This amplitude is compatible with no evolution with redshift and proportional to M^{2.70+/-0.37} (using X-ray derived masses) or M^{2.51+/-0.38} (using weak-lensing derived masses), with some tension regarding the expectations of the self-similar dependence (amplitude proportional to M^{5/3}). Other secondary products of our analysis include that clusters have a dust emission with emissivity index beta~2 and temperature T~25 K; we confirm that the CMB temperature agrees with a dependence of T_0(1+z) with clusters of much lower mass than those explored previously; and we find that the cluster masses derived by Wen et al. (2012) from a richness-mass relationship are biased by a factor of (1+z)^{-1.8} with respect to the X-ray and weak-lensing measurements.
15 pages, accepted to be published in ApJ
References in corpus (13)
- The Canadian Cluster Comparison Project: detailed study of systematics and updated weak lensing masses
- Galaxy clusters discovered with a Sunyaev-Zel'dovich effect survey
- Calibration of the optical mass proxy for clusters of galaxies and an update of the WHL12 cluster catalog
- Weak-lensing mass calibration of redMaPPer galaxy clusters in Dark Energy Survey Science Verification data
- CoMaLit III. Literature Catalogs of weak Lensing Clusters of galaxies (LC^2)
- Galaxy Cluster Scaling Relations between Bolocam Sunyaev-Zel'dovich Effect and Chandra X-ray Measurements
- Measurement of the electron-pressure profile of galaxy clusters in Wilkinson Microwave Anisotropy Probe (WMAP) 3-year data
- CoMaLit - II. The scaling relation between mass and Sunyaev-Zel'dovich signal for Planck selected galaxy clusters
- On the dust content of galaxy clusters
- Sunyaev-Zel'dovich profiles and scaling relations: modelling effects and observational biases
- Planck intermediate results. XLIII. The spectral energy distribution of dust in clusters of galaxies
- Dust in clusters: separating the contribution of galaxies and intracluster media
- SZ/X-ray scaling relations using X-ray data and Planck Nominal maps