Theoretical Predictions of Colors and Metallicity of the Intra-Cluster Light

Abstract

We study colors and metallicities of the Brightest Cluster Galaxies (BCGs) and Intra-Cluster Light (ICL) in galaxy groups and clusters, as predicted by a semi-analytic model of galaxy formation, coupled with a set of high-resolution N-body simulations. The model assumes stellar stripping and violent relaxation processes during galaxy mergers to be the main channels for the formation of the ICL. We find that BCGs are more metal-rich and redder than the ICL, at all redshifts since the ICL starts to form ($z\sim 1$). In good agreement with several observed data, our model predicts negative radial metallicity and color gradients in the BCG+ICL system. By comparing the typical colors of the ICL with those of satellite galaxies, we find that mass and metals in the ICL come from galaxies of different mass, depending on the redshift. Stripping of low mass galaxies, $9<\log M_{\ast }<10$, is the most important contributor in the early stage of the ICL formation, but the bulk of the mass/metals contents are given by intermediate/massive galaxies, $10<\log M_{\ast }<11$, at lower redshift. Our analysis supports the idea that stellar stripping is more important than galaxy mergers in building-up the ICL, and highlights the importance of colors/metallicity measurements for understanding the formation and evolution of the ICL.

arXiv comment12 pages, 6 figures, accepted for publication in ApJ after minor revision

References in corpus (35)

• Galactic Stellar and Substellar Initial Mass Function
• The hierarchical formation of the brightest cluster galaxies
• The ages and metallicities of galaxies in the local universe
• Mass assembly in quiescent and star-forming galaxies since z=4 from UltraVISTA
• The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
• Galaxy Stellar Mass Functions from ZFOURGE/CANDELS: An Excess of Low-Mass Galaxies Since z=2 and the Rapid Buildup of Quiescent Galaxies
• How special are Brightest Group and Cluster Galaxies?
• The Importance of Mergers for the Origin of Intracluster Stars in Cosmological Simulations of Galaxy Clusters
• Shredded Galaxies as the Source of Diffuse Intrahalo Light On Varying Scales
• On the formation and physical properties of the Intra-Cluster Light in hierarchical galaxy formation models
• Intracluster stars in simulations with AGN feedback
• Intracluster Red Giant Stars in the Virgo Cluster
• Deep CCD Surface Photometry of Galaxy Clusters II: Searching for Intracluster Starlight in non-cD clusters
• The Quantity of Intracluster Light: Comparing Theoretical and Observational Measurement Techniques Using Simulated Clusters
• Intracluster Light at the Frontier II: The Frontier Fields Clusters
• Co-evolution of BCGs and ICL using CLASH
• The Metallicity Distribution of Intracluster Stars in Virgo
• Lost but not Forgotten: Intracluster Light in Galaxy Groups and Clusters
• Intra-Cluster Light at the Frontier: Abell 2744
• Diffuse Optical Light in Galaxy Clusters I: Abell 3888
• Intracluster Planetary Nebulae in the Virgo Cluster I. Initial Results
• Intra Cluster Light properties in the CLASH-VLT cluster MACS J1206.2-0847
• On the Origin of Intracluster Light in Massive Galaxy Clusters
• Characterizing Intra-cluster light in the Hubble Frontier Fields
• Stellar populations in the centres of brightest cluster galaxies
• Stellar population and the origin of intra-cluster stars around brightest cluster galaxies: the case of NGC 3311
• The different growth pathways of Brightest Cluster Galaxies and the Intra-Cluster Light
• Intra-cluster patches of baryons in the core of the Fornax cluster
• Simulating the evolution of disc galaxies in a group environment. I. The influence of the global tidal field
• From Diversity to Dichotomy, and Quenching: Milky-Way-Like and Massive-Galaxy Progenitors at 0.5<z<3.0
• The Faint End of the Cluster Galaxy Luminosity Function at High Redshift
• Evidence for the existence of abundant intracluster light at z= 1.24
• Statistics of Substructures in Dark Matter Haloes
• The close pair fraction of BCGs since $z=0.5$: major mergers dominate recent BCG stellar mass growth
• Mild evolution of the stellar metallicity gradients of disc galaxies

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• VEGAS: A VST Early-type GAlaxy Survey.VI. The diffuse light in HCG 86 from the ultra-deep VEGAS images
• Euclid: Early Release Observations -- The intracluster light and intracluster globular clusters of the Perseus cluster
• The Transition Region between Brightest Cluster Galaxies and Intra-Cluster Light in Galaxy Groups and Clusters
• Galaxy and Mass Assembly (GAMA): Extended Intra-Group Light in a group at $z=0.2$ from deep Hyper-Suprime Cam images
• Characterising the Intracluster Light over the Redshift Range $0.2<z<0.8$ in the DES-ACT Overlap
• The Evolution of Brightest Cluster Galaxies in the Nearby Universe I: Colours and Stellar Masses from the Sloan Digital Sky Survey and Wide Infrared Survey Explorer
• The Sphere of Influence of the Bright Central Galaxies in the Diffuse Light of SDSS Clusters
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• The Evolution of Brightest Cluster Galaxies in the Nearby Universe II: The star-formation activity and the Stellar Mass from Spectral Energy Distribution
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• On the Origin of Intracluster Light based on the High-resolution Simulation, NewCluster
• Halo cluster shapes: Insights from simulated galaxies and ICL with prospects for weak lensing applications
• Stellar halos of bright central galaxies II: Scaling relations, colors and metallicity evolution with redshift
• The origin of the intra-cluster light in The Three Hundred simulations