The Assembly of the Virgo Cluster, Traced by its Galaxy Halos

Abstract

Kinematic studies have produced accurate measurements of the total dark matter mass and mean dark matter density within the optical extent of galaxies, for large samples of objects. Here we consider theoretical predictions for the latter quantity, ${\bar{\rho }}_{dm}$, measured within the isophotal radius $R_{23.5}$, for isolated halos with universal density profiles. Through a combination of empirical scaling relations, we show that ${\bar{\rho }}_{dm}$ is expected to depend weakly on halo mass and strongly on redshift. When galaxy halos fall into larger groups or clusters they become tidally stripped, reducing their total dark matter mass, but this process is expected to preserve central density until an object is close to disruption. We confirm this with collisonless simulations of cluster formation, finding that subhalos have values of ${\bar{\rho }}_{dm}$ close to the analytic predictions. This suggests that ${\bar{\rho }}_{dm}$ may be a useful indicator of infall redshift onto the cluster. We test this hypothesis with data from the SHIVir survey, which covers a reasonable fraction of the Virgo cluster. We find that galaxies with high ${\bar{\rho }}_{dm}$ do indeed trace the densest regions of the cluster, with a few notable exceptions. Samples selected by environment have higher densities at a significance of 3.5-4$\sigma$, while samples selected by density are more clustered at 3-3.5$\sigma$ significance. We conclude that halo density can be a powerful tracer of the assembly history of clusters and their member galaxies.

arXiv comment17 pages, 18 figures; accepted for publication in MNRAS

References in corpus (73)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• The cosmological simulation code GADGET-2
• Efficient Computation of CMB anisotropies in closed FRW models
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• The Sixth Data Release of the Sloan Digital Sky Survey
• CALIFA, the Calar Alto Legacy Integral Field Area survey: I. Survey presentation
• Concentrations of Dark Halos from their Assembly Histories
• Galaxy Luminosity Functions to z~1: DEEP2 vs. COMBO-17 and Implications for Red Galaxy Formation
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• A Comprehensive Analysis of Uncertainties Affecting the Stellar Mass - Halo Mass Relation for 0<z<4
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Response of dark matter halos to condensation of baryons: cosmological simulations and improved adiabatic contraction model
• Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
• Ahf: Amiga's Halo Finder
• Multi-scale initial conditions for cosmological simulations
• The ACS Virgo Cluster Survey. XIII. SBF Distance Catalog and the Three-Dimensional Structure of the Virgo Cluster
• The Arecibo Legacy Fast ALFA Survey: The alpha.40 HI Source Catalog, its Characteristics and their Impact on the Derivation of the HI Mass Function
• The bimodal galaxy color distribution: dependence on luminosity and environment
• Empirical models for Dark Matter Halos. I. Nonparametric Construction of Density Profiles and Comparison with Parametric Models
• New constraints on the evolution of the stellar-to-dark matter connection: a combined analysis of galaxy-galaxy lensing, clustering, and stellar mass functions from z=0.2 to z=1
• The redshift dependence of the structure of massive LCDM halos
• The SAMI Galaxy Survey: instrument specification and target selection
• Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS
• Accurate universal models for the mass accretion histories and concentrations of dark matter halos
• The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
• The Structural Evolution of Substructure
• A universal model for halo concentrations
• Introducing GOLDMine: A new Galaxy Database on the WEB
• The ACS Virgo Cluster Survey. I. Introduction to the Survey
• NIHAO IV: Core creation and destruction in dark matter density profiles across cosmic time
• Galaxy Masses
• The 3-D structure of the Virgo cluster from H band Fundamental Plane and Tully-Fisher distance determinations
• The Evolution of Population Gradients in Galaxy Clusters: the Butcher-Oemler Effect and Cluster Infall
• Galaxy-Induced Transformation of Dark Matter Halos
• Galaxy Groups within 3500 km s${}^{-1}$
• Phase-space Analysis in the Group and Cluster environment: Time since Infall and Tidal Mass Loss
• Evidence for Significant Growth in the Stellar Mass of Brightest Cluster Galaxies over the Past 10 Billion Years
• Evidence in Virgo for the Universal Dark Matter Halo
• The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). IV: The role of the cluster environment on galaxy evolution
• The Next Generation Virgo Cluster Survey. VIII. The Spatial Distribution of Globular Clusters in the Virgo Cluster
• Disentangling satellite galaxy populations using orbit tracking in simulations
• How to Zoom: Bias, Contamination, and Lagrange Volumes in Multimass Cosmological Simulations
• Dark matter response to galaxy formation
• The velocity modulation of galaxy properties in and near clusters: quantifying the decrease in star formation in backsplash galaxies
• Two body relaxation in CDM simulations
• A Panoramic Halpha Imaging Survey of the z=0.4 cluster Cl0024.0+1652 with Subaru
• LoCuSS: The mid-infrared Butcher-Oemler effect
• CAIRNS: The Cluster And Infall Region Nearby Survey III. Environmental Dependence of H-alpha Properties of Galaxies
• NIHAO IX: the role of gas inflows and outflows in driving the contraction and expansion of cold dark matter haloes
• Dark matter scaling relations and the assembly epoch of Coma early-type galaxies
• Dry Mergers: A Crucial Test for Galaxy Formation
• The origin of HI-deficiency in galaxies on the outskirts of the Virgo cluster. I. How far can galaxies bounce out of clusters?
• The Different Environmental Dependencies of Star-formation for Giant and Dwarf Galaxies
• The masses of satellites in GAMA galaxy groups from 100 square degrees of KiDS weak lensing data
• The SLUGGS Survey: Dark matter fractions at large radii and assembly epochs of early-type galaxies from globular cluster kinematics
• A New Halo Finding Method for N-Body Simulations
• The Formation and Evolution of Virgo Cluster Galaxies - II. Stellar Populations
• The Near-IR Luminosity Function and Bimodal Surface Brightness Distribution of Virgo Cluster Galaxies
• CFHTLenS: The Environmental Dependence of Galaxy Halo Masses from Weak Lensing
• First Galaxy-Galaxy Lensing Measurement of Satellite Halo Mass in the CFHT Stripe-82 Survey
• Star formation activity and gas stripping in the Cluster Projected Phase-Space (CPPS)
• Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey
• The phase-space structure of tidally stripped halos
• The galaxy-subhalo connection in low-redshift galaxy clusters from weak gravitational lensing
• The Spectroscopy and H-band Imaging of Virgo cluster galaxies (SHIVir) Survey: Scaling Relations and the Stellar-to-Total Mass Relation
• Stellar-to-halo mass relation of cluster galaxies
• The Formation and Evolution of Virgo Cluster Galaxies - I. Broadband Optical & Infrared Colours
• The response of dark matter haloes to elliptical galaxy formation: a new test for quenching scenarios
• The Next Generation Virgo Cluster Survey. IX. Estimating the Efficiency of Galaxy Formation on the Lowest-Mass Scales
• The Unusually High Halo Concentration of the Fossil Group NGC 6482: Evidence for Weak Adiabatic Contraction
• The Mass Growth and Stellar Ages of Galaxies: Observations versus Simulations

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