Intragroup and Intracluster Light

Abstract

The largest stellar halos in the universe are found in massive galaxy clusters, where interactions and mergers of galaxies, along with the cluster tidal field, all act to strip stars from their host galaxies and feed the diffuse intracluster light (ICL) and extended halos of brightest cluster galaxies (BCGs). Studies of the nearby Virgo Cluster reveal a variety of accretion signatures imprinted in the morphology and stellar populations of its ICL. While simulations suggest the ICL should grow with time, attempts to track this evolution across clusters spanning a range of mass and redshift have proved difficult due to a variety of observational and definitional issues. Meanwhile, studies of nearby galaxy groups reveal the earliest stages of ICL formation: the extremely diffuse tidal streams formed during interactions in the group environment.

8 pages, 4 figures. Invited review presented at IAU Symposium 317: The General Assembly of Galaxy Halos

References in corpus (19)

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Cited by in corpus (13)

• Intracluster light: a luminous tracer for dark matter in clusters of galaxies
• Intracluster Light at the Frontier II: The Frontier Fields Clusters
• The intra-cluster light as a tracer of the total matter density distribution: a view from simulations
• The Outer Halos of Very Massive Galaxies: BCGs and their DSC in the Magneticum Simulations
• Intracluster light is already abundant at redshift beyond unity
• Stellar splashback: the edge of the intracluster light
• Reaching for the Edge I: Probing the Outskirts of Massive Galaxies with HSC, DECaLS, SDSS, and Dragonfly
• To the Edge of M87 and Beyond: Spectroscopy of Intracluster Globular Clusters and Ultra Compact Dwarfs in the Virgo Cluster
• Comparison of spatial distributions of Intracluster light and Dark Matter
• Intracluster Light Properties in a Fossil Cluster at z=0.47
• Assembly of the Intracluster Light in the Horizon-AGN Simulation
• Dust in Clusters of Galaxies
• On the Origin of Intracluster Light based on the High-resolution Simulation, NewCluster