Evidence for galaxy assembly bias in BOSS CMASS redshift-space galaxy correlation function

Abstract

Building accurate and flexible galaxy-halo connection models is crucial in modeling galaxy clustering on non-linear scales. Recent studies have found that halo concentration by itself cannot capture the full galaxy assembly bias effect and that the local environment of the halo can be an excellent indicator of galaxy assembly bias. In this paper, we propose an extended halo occupation distribution model (HOD) that includes both a concentration-based assembly bias term and an environment-based assembly bias term. We use this model to achieve a good fit (chi^2/DoF = 1.35) on the 2D redshift-space 2-point correlation function (2PCF) of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS galaxy sample. We find that the inclusion of both assembly bias terms is strongly favored by the data and the standard 5-parameter HOD is strongly rejected. More interestingly, the redshift-space 2PCF drives the assembly bias parameters in a way that preferentially assigns galaxies to lower mass halos. This results in galaxy-galaxy lensing predictions that are within 1sigma agreement with the observation, alleviating the perceived tension between galaxy clustering and lensing. We also showcase a consistent 3-5sigma preference for a positive environment-based assembly bias that persists over variations in the fit. We speculate that the environmental dependence might be driven by underlying processes such as mergers and feedback, but might also be indicative of a larger halo boundaries such as the splashback radius. Regardless, this work highlights the importance of building flexible galaxy-halo connection models and demonstrates the extra constraining power of the redshift-space 2PCF.

arXiv comment16 pages, 9 figures, accepted to MNRAS, comments welcome

References in corpus (93)

• emcee: The MCMC Hammer
• Planck 2015 results. XIII. Cosmological parameters
• A Universal Density Profile from Hierarchical Clustering
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• Concentrations of Dark Halos from their Assembly Histories
• Halo occupation numbers and galaxy bias
• Halos and galaxies in the standard cosmological model: results from the Bolshoi simulation
• 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
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The Connection between Galaxies and their Dark Matter Halos
• The age dependence of halo clustering
• Spectral Classification and Redshift Measurement for the SDSS-III Baryon Oscillation Spectroscopic Survey
• How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• Accurate universal models for the mass accretion histories and concentrations of dark matter halos
• Rotation-Dependent Catastrophic Disruption of Gravitational Aggregates
• Dependence of the outer density profiles of halos on their mass accretion rate
• The Halo Occupation Distribution and the Physics of Galaxy Formation
• The DESI Experiment, a whitepaper for Snowmass 2013
• The Growth and Structure of Dark Matter Haloes
• Assembly bias in the clustering of dark matter haloes
• The Physics of Galaxy Clustering I: A Model for Subhalo Populations
• Halo assembly bias and its effects on galaxy clustering
• The Excursion Set Theory of Halo Mass Functions, Halo Clustering, and Halo Growth
• Galaxy-Induced Transformation of Dark Matter Halos
• Stellar masses of SDSS-III BOSS galaxies at z~0.5 and constraints to galaxy formation models
• Splashback in accreting dark matter halos
• Lensing is Low: Cosmology, Galaxy Formation, or New Physics?
• A 2.5% measurement of the growth rate from small-scale redshift space clustering of SDSS-III CMASS galaxies
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Modeling the clustering and halo occupation distribution of BOSS-CMASS galaxies in the Final Data Release
• Galaxy Assembly Bias: A Significant Source of Systematic Error in the Galaxy-Halo Relationship
• Corrfunc --- A Suite of Blazing Fast Correlation Functions on the CPU
• Are Brightest Halo Galaxies Central Galaxies?
• Impact of baryon physics on dark matter structures: a detailed simulation study of halo density profiles
• COSMOS2015 photometric redshifts probe the impact of filaments on galaxy properties
• On Halo Formation Times and Assembly Bias
• Introducing Decorated HODs: modeling assembly bias in the galaxy-halo connection
• Galaxy evolution near groups and clusters: ejected satellites and the spatial extent of environmental quenching
• The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints
• Density profile of dark matter haloes and galaxies in the Horizon-AGN simulation: the impact of AGN feedback
• The Impact of Assembly Bias on the Galaxy Content of Dark Matter Halos
• The Atacama Cosmology Telescope: Modeling the Gas Thermodynamics in BOSS CMASS galaxies from Kinematic and Thermal Sunyaev-Zel'dovich Measurements
• Beyond Assembly Bias: Exploring Secondary Halo Biases for Cluster-size Haloes
• Detecting Effects of Filaments on Galaxy Properties in the Sloan Digital Sky Survey III
• A New Method to Correct for Fiber Collisions in Galaxy Two-Point Statistics
• Velocity Bias from the Small Scale Clustering of SDSS-III BOSS Galaxies
• The impact of assembly bias on the halo occupation in hydrodynamical simulations
• Limitations to the "basic'' HOD model and beyond
• Breaking the Degeneracies Between Cosmology and Galaxy Bias
• The Abacus Cosmos: A Suite of Cosmological N-body Simulations
• The Phase-Space Parameters of Brightest Halo Galaxies
• The Dependence of the Occupation of Galaxies on the Halo Formation Time
• Revealing the galaxy-halo connection in IllustrisTNG
• Constraints on Assembly Bias from Galaxy Clustering
• Connecting massive galaxies to dark matter halos in BOSS - I. Is galaxy color a stochastic process in high-mass halos?
• Dissecting and Modelling Galaxy Assembly Bias
• The Three Causes of Low-Mass Assembly Bias
• The Evolution of Assembly Bias
• Improving Initial Conditions for Cosmological $N$-Body Simulations
• The Stripe 82 Massive Galaxy Project II: Stellar Mass Completeness of Spectroscopic Galaxy Samples from the Baryon Oscillation Spectroscopic Survey
• Correlating galaxy colour and halo concentration: A tunable Halo Model of galactic conformity
• Galaxies flowing in the oriented saddle frame of the cosmic web
• Emulating galaxy clustering and galaxy-galaxy lensing into the deeply nonlinear regime: methodology, information, and forecasts
• Subhalo Demographics in the Illustris Simulation: Effects of Baryons and Halo-to-Halo Variation
• The effect of cosmic web filaments on the properties of groups and their central galaxies
• Extensions to models of the galaxy-halo connection
• The physical nature of the cosmic accretion of baryons and dark matter into halos and their galaxies
• The Scale-Dependence of Halo Assembly Bias
• Halo Histories vs. Galaxy Properties at z=0 II: Large-Scale Galactic Conformity
• Exploring the squeezed three-point galaxy correlation function with generalized halo occupation distribution models
• Testing gravity on large scales by combining weak lensing with galaxy clustering using CFHTLenS and BOSS CMASS
• 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
• Halo Histories vs. Galaxy Properties at z=0, I: The Quenching of Star Formation
• On the halo-mass and radial scale dependence of the lensing is low effect
• The Incomplete Conditional Stellar Mass Function: Unveiling the Stellar Mass Functions of Galaxies at 0.1 < Z < 0.8 from BOSS Observations
• Filaments in VIPERS: galaxy quenching in the infalling regions of groups
• Detection of anisotropic galaxy assembly bias in BOSS DR12
• Does the Galaxy-Halo Connection Vary with Environment?
• Probing Galaxy Assembly Bias in BOSS Galaxies Using Void Probabilities
• Cosmological Evidence Modelling: a new simulation-based approach to constrain cosmology on non-linear scales
• Spatial and Dynamical Biases in Velocity Statistics of Galaxies
• Are the halo occupation predictions consistent with large scale galaxy clustering?
• Can Assembly Bias Explain the Lensing Amplitude of the BOSS CMASS Sample in a Planck Cosmology?
• Tidal Stripping and Post-Merger Relaxation of Dark Matter Halos: Causes and Consequences of Mass Loss
• Halo Histories vs. Galaxy Properties at z=0, III: The Properties of Star-Forming Galaxies
• Using galaxy pairs to investigate the three-point correlation function in the squeezed limit
• On the "Lensing is Low" of BOSS Galaxies

Cited by in corpus (41)

• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Arbitrating the $S_8$ discrepancy with growth rate measurements from Redshift-Space Distortions
• The $\text{Abacus}$ Cosmological $N$-body Code
• AbacusHOD: A highly efficient extended multi-tracer HOD framework and its application to BOSS and eBOSS data
• Consistent lensing and clustering in a low-$S_8$ Universe with BOSS, DES Year 3, HSC Year 1 and KiDS-1000
• Stringent ${\sigma }_8$ constraints from small-scale galaxy clustering using a hybrid MCMC+emulator framework
• Five-percent measurements of the growth rate from simulation-based modelling of redshift-space clustering in BOSS LOWZ
• The galaxy-halo connection of emission-line galaxies in IllustrisTNG
• Going Beyond the Galaxy Power Spectrum: an Analysis of BOSS Data with Wavelet Scattering Transforms
• The Aemulus Project V: Cosmological constraint from small-scale clustering of BOSS galaxies
• The MillenniumTNG Project: An improved two-halo model for the galaxy-halo connection of red and blue galaxies
• Illustrating galaxy-halo connection in the DESI era with IllustrisTNG
• The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: N-body Mock Challenge for Galaxy Clustering Measurements
• On the halo-mass and radial scale dependence of the lensing is low effect
• Precise Cosmological Constraints from BOSS Galaxy Clustering with a Simulation-Based Emulator of the Wavelet Scattering Transform
• The cosmological dependence of halo and galaxy assembly bias
• Responses of Halo Occupation Distributions: a new ingredient in the halo model & the impact on galaxy bias
• Evidence of Galaxy Assembly Bias in SDSS DR7 Galaxy Samples from Count Statistics
• Constructing high-fidelity halo merger trees in AbacusSummit
• The Aemulus Project VI: Emulation of beyond-standard galaxy clustering statistics to improve cosmological constraints
• HOD-Dependent Systematics in Emission Line Galaxies for the DESI 2024 BAO analysis
• Connections between galaxy properties and halo formation time in the cosmic web
• Modeling assembly bias with machine learning and symbolic regression
• On the kinetic Sunyaev-Zel'dovich effect as an observational probe for halo spin bias
• Galaxy Clustering in the Mira-Titan Universe I: Emulators for the redshift space galaxy correlation function and galaxy-galaxy lensing
• Galaxy assembly bias in the stellar-to-halo mass relation for red central galaxies from SDSS
• The ASTRID Simulation at z=0: From Massive Black Holes to Large-scale Structure
• Small scale clustering of BOSS galaxies: dependence on luminosity, color, age, stellar mass, specific star formation rate and other properties
• Satellite galaxy abundance dependency on cosmology in Magneticum simulations
• Unraveling emission line galaxy conformity at z~1 with DESI early data
• On the Constraints of Galaxy Assembly Bias in Velocity Space
• Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: II. Anisotropic large-scale coherence in hot gas, galaxies, and dark matter
• Galaxy assembly bias and large-scale distribution: a comparison between IllustrisTNG and a semi-analytic model
• Scatter in the star formation rate-halo mass relation: secondary bias and its impact on line-intensity mapping
• Disentangling the Halo: Joint Model for Measurements of the Kinetic Sunyaev-Zeldovich Effect and Galaxy-Galaxy Lensing
• Assembly bias in quadratic bias parameters of dark matter halos from forward modeling
• Bounds on galaxy stochasticity from halo occupation distribution modeling
• Mock catalogues of emission line galaxies based on the local mass density in dark-matter only simulations
• On the dependence of galaxy assembly bias on the selection criteria, number density, and redshift of galaxy samples
• Predicting halo occupation and galaxy assembly bias with machine learning
• Galaxy assembly bias in cosmological hydrodynamical simulations: a comparison between SIMBA and IllustrisTNG