Environmental Dependence of Cold Dark Matter Halo Formation

Abstract

We use a high-resolution $N$-body simulation to study how the formation of cold dark matter (CDM) halos is affected by their environments, and how such environmental effects produce the age-dependence of halo clustering observed in recent $N$-body simulations. We estimate, for each halo selected at redshift $z=0$, an `initial' mass $M_{\mathrm{i}}$ defined to be the mass enclosed by the largest sphere which contains the initial barycenter of the halo particles and within which the mean linear density is equal to the critical value for spherical collapse at $z=0$. For halos of a given final mass, $M_{\mathrm{h}}$, the ratio $M_{\mathrm{i}}/M_{\mathrm{h}}$ has large scatter, and the scatter is larger for halos of lower final masses. Halos that form earlier on average have larger $M_{\mathrm{i}}/M_{\mathrm{h}}$, and so correspond to higher peaks in the initial density field than their final masses imply. Old halos are more strongly clustered than younger ones of the same mass because their initial masses are larger. The age-dependence of clustering for low-mass halos is entirely due to the difference in the initial/final mass ratio. Low-mass old halos are almost always located in the vicinity of big structures, and their old ages are largely due to the fact that their mass accretions are suppressed by the hot environments produced by the tidal fields of the larger structure. The age-dependence of clustering is weaker for more massive halos because the heating by large-scale tidal fields is less important.

arXiv comment18 pages,19 figures, accepted by MNRAS

References in corpus (28)

• A Universal Density Profile from Hierarchical Clustering
• Dark Matter Substructure in Galactic Halos
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• An analytic model for the spatial clustering of dark matter haloes
• Concentrations of Dark Halos from their Assembly Histories
• Analytic model for galaxy and dark matter clustering
• Halo occupation numbers and galaxy bias
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• Triaxial Modeling of Halo Density Profiles with High-resolution N-body Simulations
• The age dependence of halo clustering
• Constraining Galaxy Formation and Cosmology with the Conditional Luminosity Function of Galaxies
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• Galaxies in N-body simulations: overcoming the overmerging problem
• Spatial correlation function and pairwise velocity dispersion of galaxies: CDM models versus the Las Campanas Survey
• The Growth and Structure of Dark Matter Haloes
• Deriving the Nonlinear Cosmological Power Spectrum and Bispectrum from Analytic Dark Matter Halo Profiles and Mass Functions
• The density profile of equilibrium and non-equilibrium dark matter halos
• Mass and Redshift Dependence of Dark Halo Structure
• A marked correlation function analysis of halo formation times in the Millennium Simulation
• Accurate fitting formula for the two-point correlation function of the dark matter halos
• Large scale bias and stochasticity of halos and dark matter
• On the origin of cold dark matter halo density profiles
• The Clustering of Massive Halos
• The Dependence of the Occupation of Galaxies on the Halo Formation Time
• On The Assembly History of Dark Matter Haloes
• Preheating by Previrialization and its Impact on Galaxy Formation
• Can Baryonic Features Produce the Observed 100 Mpc Clustering?
• Analytical Approximations to the Low-Order Statistics of Dark Matter Distribution

Cited by in corpus (98)

• The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
• Large-Scale Galaxy Bias
• Formation and evolution of galaxy dark matter halos and their substructure
• Accurate universal models for the mass accretion histories and concentrations of dark matter halos
• Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS
• Assembly bias in the clustering of dark matter haloes
• Galaxy Groups in the SDSS DR4: III. the luminosity and stellar mass functions
• The Evolution of Dark Matter Halo Properties in Clusters, Filaments, Sheets and Voids
• Halo Assembly Bias in Hierarchical Structure Formation
• Mapping stellar content to dark matter halos using galaxy clustering and galaxy-galaxy lensing in the SDSS DR7
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• The Unorthodox Orbits of Substructure Halos
• The spin and orientation of dark matter halos within cosmic filaments
• Tidal Effects and the Environment Dependence of Halo Assembly
• On Halo Formation Times and Assembly Bias
• The X-Ray Concentration-Virial Mass Relation
• Environmental Dependence of Dark Matter Halo Growth I: Halo Merger Rates
• Alignments of galaxies within cosmic filaments from SDSS DR7
• Internal properties and environments of dark matter halos
• Disentangling galaxy environment and host halo mass
• On Detecting Halo Assembly Bias with Galaxy Populations
• Collapse Barriers and Halo Abundance: Testing the Excursion Set Ansatz
• Reconstructing the Cosmic Velocity and Tidal Fields with Galaxy Groups Selected from the Sloan Digital Sky Survey
• ZOMG-I. How the cosmic web inhibits halo growth and generates assembly bias
• Dark Matter Halo Growth II: Diffuse Accretion and its Environmental Dependence
• Colours, Star formation Rates, and Environments of Star forming and Quiescent Galaxies at the Cosmic Noon
• Reconstructing the cosmic density field with the distribution of dark matter halos
• Spatial Clustering of Dark Matter Halos: Secondary Bias, Neighbor Bias, and the Influence of Massive Neighbors on Halo Properties
• An adaptively refined phase-space element method for cosmological simulations and collisionless dynamics
• Environmental dependence in the ellipsoidal collapse model
• The Three Causes of Low-Mass Assembly Bias
• Systematic Effects on Determination of the Growth Factor from Redshift-space Distortions
• ELUCID IV: Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias
• The distribution of ejected subhalos and its implication for halo assembly bias
• On the Physical Origin of Galactic Conformity
• The Peaks Formalism and the Formation of Cold Dark Matter Haloes
• The fully connected N-dimensional skeleton: probing the evolution of the cosmic web
• Dark matter halo abundances, clustering and assembly histories at high redshift
• The clustering of SDSS galaxy groups: mass and color dependence
• Semi-analytic forecasts for JWST -- VI. Simulated lightcones and galaxy clustering predictions
• Properties of Dark Matter Halos as a Function of Local Environment Density
• The multidimensional dependence of halo bias in the eye of a machine: a tale of halo structure, assembly and environment
• Constraining the HI-Halo Mass Relation From Galaxy Clustering
• Galaxy interactions II: High density environments
• The Scale-Dependence of Halo Assembly Bias
• Properties of Dark Matter Haloes and their Correlations: the Lesson from Principal Component Analysis
• The nature of assembly bias - I. Clues from a LCDM cosmology
• Interpreting the Clustering of Distant Red Galaxies
• A natural boundary of dark matter haloes revealed around the minimum bias and maximum infall locations
• Environmental Effects on Real-Space and Redshift-Space Galaxy Clustering
• Elucidating Galaxy Assembly Bias in SDSS
• The Immitigable Nature of Assembly Bias: The Impact of Halo Definition on Assembly Bias
• The effects of assembly bias on cosmological inference from galaxy-galaxy lensing and galaxy clusters
• Satellite Alignment: I. Distribution of Substructures and Their Dependence On Assembly History From N-Body Simulations
• The nature of assembly bias - III. Observational properties
• The formation of CDM haloes I: Collapse thresholds and the ellipsoidal collapse model
• The Secondary Spin Bias of Dark Matter Haloes
• Relating the structure of dark matter halos to their assembly and environment
• Cosmology with Stacked Cluster Weak Lensing and Cluster-Galaxy Cross-Correlations
• Massive Star-Forming Galaxies Have Converted Most of Their Halo Gas into Stars
• How are galaxies assigned to halos? Searching for assembly bias in the SDSS galaxy clustering
• Effects of large-scale environment on the assembly history of central galaxies
• The physical origins of low-mass spin bias
• Differences in Halo-Scale Environments between Type 1 and Type 2 AGNs at Low Redshift
• On the environmental influence of groups and clusters of galaxies beyond the virial radius: Galactic conformity at few Mpc scales
• First measurement of the characteristic depletion radius of dark matter haloes from weak lensing
• Some assembly required: assembly bias in massive dark matter halos
• The age dependence of galaxy clustering
• SDSS-IV MaNGA: Signatures of halo assembly in kinematically misaligned galaxies
• Don't Forget the Forest for the Trees: The Stellar-Mass Halo-Mass Relation in Different Environments
• Dwarf Spheroidal Satellite Formation in a Reionized Local Group
• Halo Assembly Bias in the Quasi-linear Regime
• Effects of biasing on the galaxy power spectrum at large scales
• Noiseless Gravitational Lensing Simulations
• Modelling the shapes of the largest gravitationally bound objects
• Connections between galaxy properties and halo formation time in the cosmic web
• Alignments of dark matter halos with large-scale tidal fields: mass and redshift dependence
• Constraints on sigma_8 from galaxy clustering in N-body simulations and semi-analytic models
• Close Pairs as Proxies for Galaxy Cluster Mergers
• How the Galaxy-Halo Connection Depends on Large-Scale Environment
• Assembly Bias of Dwarf-sized Dark Matter Haloes
• The environment and redshift dependence of accretion onto dark matter halos and subhalos
• The impact of environment on the dynamical structure of satellite systems
• Environmental Effects of Dark Matter Haloes: The Clustering-Substructure relation of Group-size Haloes
• Connection between galaxy morphology and dark-matter halo structure I: a running threshold for thin discs and size predictors from the dark sector
• Dark matter halo assembly bias: environmental dependence in the non-Markovian excursion set theory
• Testing the Large-Scale Environments of Cool-core and Noncool-core Clusters with Clustering Bias
• Bimodal Formation Time Distribution for Infall Dark Matter Halos
• Anisotropy and characteristic scales in halo density gradient profiles
• Evaluating the origins of the secondary bias based on the correlation of halo properties with the linear density field
• The evolution of low-mass central galaxies in the vicinity of massive structures and its impact on the two-halo conformity
• Mass accretion rates and multi-scale halo environment in cold and warm dark matter cosmologies
• The SRG/eROSITA All-Sky Survey: Exploring halo assembly bias with X-ray selected superclusters
• Caught in the cosmic web: environmental effects on subhalo abundance and internal density profiles
• On the Assembly Bias of Cool Core Clusters Traced by H$\alpha$ Nebulae
• Insights into the dependence of galaxy properties on the environment with explainable machine learning models
• Exploiting Non-linear Scales in Galaxy-Galaxy Lensing and Galaxy Clustering: A Forecast for the Dark Energy Survey
• One Galaxy Sample to Rule Them All: Halo Occupation Distribution Modeling of DES Year 3 Source Galaxies