Mass accretion rates of clusters of galaxies: CIRS and HeCS

Abstract

We use a new spherical accretion recipe tested on N-body simulations to measure the observed mass accretion rate (MAR) of 129 clusters in the Cluster Infall Regions in the Sloan Digital Sky Survey (CIRS) and in the Hectospec Cluster Survey (HeCS). The observed clusters cover the redshift range of $0.01<z<0.30$ and the mass range of $\sim 10^{14}-10^{15}{h}^{-1}{\mathrm{M}}_{\odot }$. Based on three-dimensional mass profiles of simulated clusters reaching beyond the virial radius, our recipe returns MARs that agree with MARs based on merger trees. We adopt this recipe to estimate the MAR of real clusters based on measurements of the mass profile out to $\sim 3R_{200}$. We use the caustic method to measure the mass profiles to these large radii. We demonstrate the validity of our estimates by applying the same approach to a set of mock redshift surveys of a sample of 2000 simulated clusters with a median mass of $M_{200}=10^{14}{h}^{-1}{\mathrm{M}}_{\odot }$ as well as a sample of 50 simulated clusters with a median mass of $M_{200}=10^{15}{h}^{-1}{\mathrm{M}}_{\odot }$: the median MARs based on the caustic mass profiles of the simulated clusters are unbiased and agree within $19\%$ with the median MARs based on the real mass profile of the clusters. The MAR of the CIRS and HeCS clusters increases with the mass and the redshift of the accreting cluster, which is in excellent agreement with the growth of clusters in the $\Lambda$CDM model.

25 pages, 19 figures, 7 tables

References in corpus (18)

• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• The spin and shape of dark matter haloes in the Millennium simulation of a LambdaCDM universe
• Rotation-Dependent Catastrophic Disruption of Gravitational Aggregates
• Generating Dark Matter Halo Merger Trees
• CIRS: Cluster Infall Regions in the Sloan Digital Sky Survey I. Infall Patterns and Mass Profiles
• The Excursion Set Theory of Halo Mass Functions, Halo Clustering, and Halo Growth
• Splashback in accreting dark matter halos
• Energy equipartition between stellar and dark matter particles in cosmological simulations results in spurious growth of galaxy sizes
• Lensing Constraints on the Mass Profile Shape and the Splashback Radius of Galaxy Clusters
• Coming of Age in the Dark Sector: How Dark Matter Haloes grow their Gravitational Potential Wells
• The impact of stellar and AGN feedback on halo-scale baryonic and dark matter accretion in the EAGLE simulations
• Optimising growth of structure constraints on modified gravity
• The Cluster-EAGLE project: velocity bias and the velocity dispersion - mass relation of cluster galaxies
• Pre-processing, group accretion and the orbital trajectories of associated subhaloes
• Comparing Dense Galaxy Cluster Redshift Surveys with Weak Lensing Maps
• The Phase Space Structure of Dark Matter Halos
• Velocity segregation effects in galaxy clusters at 0.4<~z<~1.5
• Clusters and Groups of Galaxies in the Simulated Local Universe

Cited by in corpus (9)

• LoCuSS: The splashback radius of massive galaxy clusters and its dependence on cluster merger history
• The HectoMAP Cluster Survey: Spectroscopically Identified Clusters and their Brightest Cluster Galaxies (BCGs)
• The HectoMAP Redshift Survey: First Data Release
• Galaxy cluster mass accretion rates from IllustrisTNG
• An IllustrisTNG View of the Caustic Technique for Galaxy Cluster Mass Estimation
• Mass accretion rates of the HectoMAP clusters of galaxies
• IllustrisTNG Snapshots for 10 Gyr of Dynamical Evolution of Brightest Cluster Galaxies and Their Host Clusters
• The eventful life journey of galaxy clusters. I. Impact of DM halo and ICM properties on their full assembly histories
• A Spectroscopic View of the JWST/GTO Strong Lensing Cluster A1489