Characterising the Intracluster Light over the Redshift Range $0.2<z<0.8$ in the DES-ACT Overlap

Abstract

We characterise the properties and evolution of Bright Central Galaxies (BCGs) and the surrounding intracluster light (ICL) in galaxy clusters identified in overlapping regions of the Dark Energy Survey and Atacama Cosmology Telescope Survey (DES-ACT), covering the redshift range $0.20<z<0.80$. Using this sample, we measure no change in the ICL's stellar content (between 50-300\,kpc) over this redshift range in clusters with log${}_{10}(M_{200m,\mathrm{SZ}}$/M${}_{\odot })>$14.4. We also measure the stellar mass - halo mass (SMHM) relation for the BCG+ICL system and find that the slope, $\beta$, which characterises the dependence of $M_{200m,\mathrm{SZ}}$ on the BCG+ICL stellar mass, increases with radius. The outskirts are more strongly correlated with the halo than the core, which supports that the BCG+ICL system follows a two-phase growth, where recent growth ($z<2$) occurs beyond the BCG's core. Additionally, we compare our observed SMHM relation results to the IllustrisTNG 300-1 cosmological hydrodynamic simulations and find moderate qualitative agreement in the amount of diffuse light. However, the SMHM relation's slope is steeper in TNG300-1 and the intrinsic scatter is lower, likely from the absence of projection effects in TNG300-1. Additionally, we find that the ICL exhibits a colour gradient such that the outskirts are bluer than the core. Moreover, for the lower halo mass clusters (log${}_{10}(M_{200m,\mathrm{SZ}}$/M${}_{\odot })<$14.59 ), we detect a modest change in the colour gradient's slope with lookback time, which combined with the absence of stellar mass growth may suggest that lower mass clusters have been involved in growth via tidal stripping more recently than their higher mass counterparts.

19 pages, 12 Figures, 3 Tables. Submitted to MNRAS on 9/7/2022 -- Metadata typo corrected

References in corpus (20)

• The Atlas3D Project - XXX. Star formation histories and stellar population scaling relations of early-type galaxies
• How special are Brightest Group and Cluster Galaxies?
• The Dark Energy Survey Data Release 2
• The Atacama Cosmology Telescope: A Catalog of > 4000 Sunyaev-Zel'dovich Galaxy Clusters
• The Importance of Mergers for the Origin of Intracluster Stars in Cosmological Simulations of Galaxy Clusters
• The Burrell Schmidt Deep Virgo Survey: Tidal Debris, Galaxy Halos, and Diffuse Intracluster Light in the Virgo Cluster
• Halo Mass and Assembly History Exposed in the Faint Outskirts: the Stellar and Dark Matter Haloes of Illustris Galaxies
• Intracluster Light at the Frontier II: The Frontier Fields Clusters
• Lost but not Forgotten: Intracluster Light in Galaxy Groups and Clusters
• The Cluster Velocity Dispersion of the Abell 2199 cD Halo of NGC 6166
• On the Origin of Intracluster Light in Massive Galaxy Clusters
• Dark Energy Survey Year 1 Results: Calibration of Cluster Mis-centering in the redMaPPer Catalogs
• The MASSIVE Survey - VIII. Stellar Velocity Dispersion Profiles and Environmental Dependence of Early-Type Galaxies
• The Growth of Intracluster Light in XCS-HSC Galaxy Clusters from $0.1<z<0.5$
• Instrumental response model and detrending for the Dark Energy Camera
• Clocking the formation of today's largest galaxies: Wide field integral spectroscopy of Brightest Cluster Galaxies and their surroundings
• The Observed Evolution of the Stellar Mass - Halo Mass Relation for Brightest Central Galaxies
• The Sphere of Influence of the Bright Central Galaxies in the Diffuse Light of SDSS Clusters
• The Outer Stellar Mass of Massive Galaxies: A Simple Tracer of Halo Mass with Scatter Comparable to Richness and Reduced Projection Effects
• The Impact of Environment on Late Time Evolution of the Stellar Mass - Halo Mass Relation

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• Intracluster light is a biased tracer of the dark matter distribution in clusters
• Euclid: Early Release Observations -- The Intracluster Light of Abell 2390
• Euclid preparation LXX. Forecasting detection limits for intracluster light in the Euclid Wide Survey
• Memoirs of mass accretion: probing the edges of intracluster light in simulated galaxy clusters
• DARKSKIES: A suite of super-sampled zoom-in simulations of galaxy clusters with self-interacting dark matter
• Improving Galaxy Cluster Selection with the Outskirt Stellar Mass of Galaxies
• Dark Energy Survey Year 6 Results: Intra-Cluster Light from Redshift 0.2 to 0.5
• Star Formation, Nebulae, and Active Galactic Nuclei in CLASH Brightest Cluster Galaxies. I. Dependence on Core Entropy of Intracluster Medium
• The Outskirt Stellar Mass of Low-Redshift Massive Galaxies is an Excellent Halo Mass Proxy in Illustris/IllustrisTNG Simulations
• The origin of the intra-cluster light in The Three Hundred simulations