Alignment between Satellite and Central Galaxies in the EAGLE Simulation: Dependence on the Large-Scale Environments

Abstract

The alignment between satellite and central galaxies serves as a proxy for addressing the issue of galaxy formation and evolution and has been investigated abundantly in observations and theoretical works. Most scenarios indicate that the satellites preferentially locate along the major axis of their central galaxy. Recent work shows that the strength of alignment signals depends on large-scale environment in observations. We use the publicly-released data from EAGLE to figure out whether the same effect can be found in the hydrodynamic simulation. We found much stronger environmental dependency of alignment signal in simulation. And we also explore change of alignments to address the formation of this effects.

arXiv comment17 pages, 9 figures accepted by RAA

References in corpus (47)

• The cosmological simulation code GADGET-2
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Populating a cluster of galaxies - I. Results at z=0
• How Filaments are Woven into the Cosmic Web
• Substructures in hydrodynamical cluster simulations
• Triaxial Modeling of Halo Density Profiles with High-resolution N-body Simulations
• Properties of Dark Matter Haloes in Clusters, Filaments, Sheets and Voids
• The origin and implications of dark matter anisotropic cosmic infall on ~L* haloes
• A Dynamical Classification of the Cosmic Web
• Galaxy alignments: An overview
• Multiscale Phenomenology of the Cosmic Web
• Connecting the cosmic web to the spin of dark halos: implications for galaxy formation
• Colours and luminosities of z=0.1 simulated galaxies in the EAGLE simulations
• The Distribution of Satellite Galaxies: The Great Pancake
• Galaxy spin alignment in filaments and sheets: observational evidence
• The Alignment between the Distribution of Satellites and the Orientation of their Central Galaxy
• Galaxy alignments: Observations and impact on cosmology
• The spin and orientation of dark matter halos within cosmic filaments
• Review: galactic angular momenta and angular momentum correlations in the cosmological large-scale structure
• Galaxy alignments: Theory, modelling and simulations
• Anisotropic Distribution of SDSS Satellite Galaxies: Planar (not Polar) Alignment
• Planes of satellite galaxies and the cosmic web
• Detection of the effect of cosmological large-scale structure on the orientation of galaxies
• Alignments of galaxies within cosmic filaments from SDSS DR7
• Galaxy orientation with the cosmic web across cosmic time
• Spin alignments of spiral galaxies within the large-scale structure from SDSS DR7
• Cosmic web alignments with the shape, angular momentum and peculiar velocities of dark matter haloes
• The alignment of satellite galaxies and cosmic filaments: observations and simulations
• The universal nature of subhalo accretion
• Galaxies in the EAGLE hydrodynamical simulation and in the Durham and Munich semi-analytical models
• Satellite Systems around Galaxies in Hydrodynamic Simulations
• Alignment between galaxies and large-scale structure
• The Orientation of Satellite Galaxies: Evidence of Elongation in the Direction of the Host
• The orientation of galaxy dark matter haloes around cosmic voids
• The orientation of disk galaxies around large cosmic voids
• Anisotropic Locations of Satellite Galaxies: Clues to the Orientations of Galaxies within their Dark Matter Halos
• The Alignment between Satellites and Central Galaxies: Theory vs. Observations
• Spatial and kinematic alignments between central and satellite halos
• The build up of the correlation between halo spin and the large scale structure
• Caught in the rhythm: how satellites settle into a plane around their central galaxy
• The Distribution of Satellite Galaxies in a Lambda-CDM Universe
• Effects of the size of cosmological N-Body simulations on physical quantities -- I: Mass Function
• The Distribution of Satellites Around Central Galaxies in a Cosmological Hydrodynamical Simulation
• Satellite Alignment: I. Distribution of Substructures and Their Dependence On Assembly History From N-Body Simulations
• Evolution of mass and velocity filed in comic web: comparison between baryonic and dark matter
• Alignment between satellite and central galaxies in the SDSS DR7: dependence on large-scale environment
• Hydrodynamical Simulations of Galaxy Clusters with Galcons

Cited by in corpus (4)

• Evolution and Role of Mergers in the BCG-Cluster Alignment. A View from Cosmological Hydro-Simulations
• The lopsided distribution of satellites of isolated central galaxies
• Satellite Alignment: III. Satellite Galaxies Spatial Distribution and their Dependence on Redshift with A Novel Galaxy Finder
• Mock Observations: Three Different Types of Galaxy Alignment in TNG100 Simulations