On the prospect of using the maximum circular velocity of halos to encapsulate assembly bias in the galaxy-halo connection

Abstract

We investigate a conceptual modification of the halo occupation distribution approach, using the halos' present-day maximal circular velocity, $\vmax$, as an alternative to halo mass. In particular, using a semi-analytic galaxy formation model applied to the Millennium WMAP7 simulation, we explore the extent that switching to $\vmax$ as the primary halo property incorporates the effects of assembly bias into the formalism. We consider fixed number density galaxy samples ranked by stellar mass and examine the variations in the halo occupation functions with either halo concentration or formation time. We find that using $\vmax$ results in a significant reduction in the occupancy variation of the central galaxies, particularly for concentration. The satellites occupancy variation on the other hand increases in all cases. We find effectively no change in the halo clustering dependence on concentration, for fixed bins of $\vmax$ compared to fixed halo mass. Most crucially, we calculate the impact of assembly bias on galaxy clustering by comparing the amplitude of clustering to that of a shuffled galaxy sample, finding that the level of galaxy assembly bias remains largely unchanged. Our results suggest that while using $\vmax$ as a proxy for halo mass diminishes some of occupancy variations exhibited in the galaxy-halo relation, it is not able to encapsulate the effects of assembly bias potentially present in galaxy clustering. The use of other more complex halo properties, such as $\vpeak$, the peak value of $\vmax$ over the assembly history, provides some improvement and warrants further investigation.

arXiv comment16 figures, 15 pages, submitted to ApJ

References in corpus (101)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Structure of Cold Dark Matter Halos
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Populating a cluster of galaxies - I. Results at z=0
• The broken hierarchy of galaxy formation
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• Halo Models of Large Scale Structure
• Simulating Galaxy Formation with the IllustrisTNG Model
• Hierarchical Galaxy Formation
• Physical Models of Galaxy Formation in a Cosmological Framework
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• A Semi-Analytic Model for the Co-evolution of Galaxies, Black Holes, and Active Galactic Nuclei
• Analytic model for galaxy and dark matter clustering
• Halo occupation numbers and galaxy bias
• Halos and galaxies in the standard cosmological model: results from the Bolshoi simulation
• A universal angular momentum profile for galactic halos
• The Dark Side of the Halo Occupation Distribution
• The Halo Occupation Distribution: Towards an Empirical Determination of the Relation Between Galaxies and Mass
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• A Recipe for Galaxy Formation Shaun Cole
• The Luminosity and Color Dependence of the Galaxy Correlation Function
• The Connection between Galaxies and their Dark Matter Halos
• Galaxy Clustering in the Completed SDSS Redshift Survey: The Dependence on Color and Luminosity
• Modeling Luminosity-Dependent Galaxy Clustering Through Cosmic Time
• The age dependence of halo clustering
• Galaxy formation in the Planck Cosmology - I. Matching the observed evolution of star formation rates, colours and stellar masses
• How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering
• Constraining Galaxy Formation and Cosmology with the Conditional Luminosity Function of Galaxies
• The Structure of Dark Matter Haloes in Hierarchical Clustering Models
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• A primer on hierarchical galaxy formation: the semi-analytical approach
• The Nature of Galaxy Bias and Clustering
• Spatial correlation function and pairwise velocity dispersion of galaxies: CDM models versus the Las Campanas Survey
• A unified multi-wavelength model of galaxy formation
• The Halo Occupation Distribution and the Physics of Galaxy Formation
• The Connection between Galaxies and Dark Matter Structures in the Local Universe
• The Many Manifestations of Downsizing: Hierarchical Galaxy Formation Models confront Observations
• Assembly bias in the clustering of dark matter haloes
• Halo assembly bias and its effects on galaxy clustering
• On the environmental dependence of halo formation
• Galaxy formation in WMAP1 and WMAP7 cosmologies
• On Departures From a Power Law in the Galaxy Correlation Function
• Shark: introducing an open source, free and flexible semi-analytic model of galaxy formation
• Galaxy Assembly Bias: A Significant Source of Systematic Error in the Galaxy-Halo Relationship
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• N-body Dark Matter Haloes with simple Hierarchical Histories
• Galaxy clustering in the CFHTLS-Wide: the changing relationship between galaxies and haloes since z ~ 1.2
• What aspects of galaxy environment matter?
• On Halo Formation Times and Assembly Bias
• Subhalo abundance matching and assembly bias in the EAGLE simulation
• The Luminosity-Weighted or `Marked' Correlation Function
• The origin of scatter in the stellar mass - halo mass relation of central galaxies in the EAGLE simulation
• The Aemulus Project I: Numerical Simulations for Precision Cosmology
• The Impact of Assembly Bias on the Galaxy Content of Dark Matter Halos
• Mapping stellar content to dark matter halos. II. Halo mass is the main driver of galaxy quenching
• The Concentration Dependence of the Galaxy-Halo Connection: Modeling Assembly Bias with Abundance Matching
• Beyond Assembly Bias: Exploring Secondary Halo Biases for Cluster-size Haloes
• Evidence of Halo Assembly Bias in Massive Clusters
• The impact of assembly bias on the halo occupation in hydrodynamical simulations
• Beyond Halo Mass: Galactic Conformity as a Smoking Gun of Central Galaxy Assembly Bias
• Galaxy formation in the Planck Millennium: the atomic hydrogen content of dark matter halos
• On the Level of Cluster Assembly Bias in SDSS
• The structure and evolution of cold dark matter halos
• The Clustering of Massive Halos
• Modelling galaxy clustering: halo occupation distribution versus subhalo matching
• On Detecting Halo Assembly Bias with Galaxy Populations
• Void Statistics in Large Galaxy Redshift Surveys: Does Halo Occupation of Field Galaxies Depend on Environment?
• The Dependence of the Occupation of Galaxies on the Halo Formation Time
• Assessing Colour-dependent Occupation Statistics Inferred from Galaxy Group Catalogues
• The Effects of Photoionization on Galaxy Formation -- III: Environmental Dependence in the Luminosity Function
• Revealing the galaxy-halo connection in IllustrisTNG
• Galaxy Assembly Bias on the Red Sequence
• Spatial Clustering of Dark Matter Halos: Secondary Bias, Neighbor Bias, and the Influence of Massive Neighbors on Halo Properties
• Interpreting the Relationship Between Galaxy Luminosity, Color and Environment
• Detection of galaxy assembly bias
• The Evolution of Assembly Bias
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the low-redshift sample
• The environmental dependence of galaxy clustering in the Sloan Digital Sky Survey
• Galaxy and Mass Assembly (GAMA): halo formation times and halo assembly bias on the cosmic web
• Large-scale assembly bias of dark matter halos
• A Lightcone Catalogue from the Millennium-XXL Simulation
• Accurate and Efficient Halo-based Galaxy Clustering Modelling with Simulations
• Predicting Galaxy Star Formation Rates via the Co-evolution of Galaxies and Halos
• The multidimensional dependence of halo bias in the eye of a machine: a tale of halo structure, assembly and environment
• Halo Histories vs. Galaxy Properties at z=0 II: Large-Scale Galactic Conformity
• The dependence of halo bias on age, concentration and spin
• Observational evidence of galaxy assembly bias
• Environmental Effects on Real-Space and Redshift-Space Galaxy Clustering
• On the evidence for large-scale galactic conformity in the local Universe
• The Immitigable Nature of Assembly Bias: The Impact of Halo Definition on Assembly Bias
• On the measurements of assembly bias and splashback radius using optically selected galaxy clusters
• The nature of assembly bias - III. Observational properties
• Central galaxies in different environments: Do they have similar properties?
• Probing Galaxy Assembly Bias in BOSS Galaxies Using Void Probabilities
• Extensions to the halo occupation distribution model for more accurate clustering predictions
• Dependence of Halo Bias and Kinematics on Assembly Variables
• Are the halo occupation predictions consistent with large scale galaxy clustering?
• ZOMG II: Does the halo assembly history influence central galaxies and gas accretion?
• The evolution of the baryon fraction in halos as a cause of scatter in the galaxy stellar mass in the EAGLE simulation

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• Large-scale dark matter simulations
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• Does Concentration Drive the Scatter in the Stellar-to-Halo Mass Relation of Galaxy Clusters?
• Galaxy assembly bias of central galaxies in the Illustris simulation
• The assembly bias of emission line galaxies
• Rosella: A mock catalogue from the P-Millennium simulation
• Separate Universe calibration of the dependence of halo bias on cosmic web anisotropy
• Not Hydro: Using Neural Networks to estimate galaxy properties on a Dark-Matter-Only simulation
• Galaxy assembly bias in the stellar-to-halo mass relation for red central galaxies from SDSS
• An efficient and robust method to estimate halo concentration
• New insight into the variability of the Be star $\pi$ Aquarii: Determination of stellar and disk parameters
• Exploring the physical origins of halo assembly bias from early times
• Secondary halo bias through cosmic time II: Reconstructing halo properties using clustering information
• Testing the Reliability of Fast Methods for Weak Lensing Simulations: WL-MOKA on PINOCCHIO
• Modeling Strong Lenses from Wide-Field Ground-Based Observations in KiDS and GAMA
• Assembly bias in quadratic bias parameters of dark matter halos from forward modeling
• Predicting halo occupation and galaxy assembly bias with machine learning
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• Exploring the effect of baryons on the radial distribution of satellite galaxies with GAMA and IllustrisTNG