Evidence of Galaxy Assembly Bias in SDSS DR7 Galaxy Samples from Count Statistics

Abstract

We present observational constraints on the galaxy-halo connection, focusing particularly on galaxy assembly bias, from a novel combination of counts-in-cylinders statistics, $P(N_{\mathrm{CIC}})$, with the standard measurements of the projected two-point correlation function, $w_{\mathrm{p}}(r_{\mathrm{p}})$, and number density, $n_{\mathrm{gal}}$, of galaxies. We measure $n_{\mathrm{gal}}$, $w_{\mathrm{p}}(r_{\mathrm{p}})$ and $P(N_{\mathrm{CIC}})$ for volume-limited, luminosity-threshold samples of galaxies selected from SDSS DR7, and use them to constrain halo occupation distribution (HOD) models, including a model in which galaxy occupation depends upon a secondary halo property, namely halo concentration. We detect significant positive central assembly bias for the $M_r<-20.0$ and $M_r<-19.5$ samples. Central galaxies preferentially reside within haloes of high concentration at fixed mass. Positive central assembly bias is also favoured in the $M_r<-20.5$ and $M_r<-19.0$ samples. We find no evidence of central assembly bias in the $M_r<-21.0$ sample. We observe only a marginal preference for negative satellite assembly bias in the $M_r<-20.0$ and $M_r<-19.0$ samples, and non-zero satellite assembly bias is not indicated in other samples. Our findings underscore the necessity of accounting for galaxy assembly bias when interpreting galaxy survey data, and demonstrate the potential of count statistics in extracting information from the spatial distribution of galaxies, which could be applied to both galaxy-halo connection studies and cosmological analyses.

arXiv comment16+5 pages, 9+3 figures, 5+2 tables, Fig. 6 shows the main result. To be submitted to MNRAS, comments welcome

References in corpus (82)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The NumPy array: a structure for efficient numerical computation
• A Universal Density Profile from Hierarchical Clustering
• The Seventh Data Release of the Sloan Digital Sky Survey
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores
• The Environmental Dependence of the Relations between Stellar Mass, Structure, Star Formation and Nuclear Activity in Galaxies
• NYU-VAGC: a galaxy catalog based on new public surveys
• Concentrations of Dark Halos from their Assembly Histories
• 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
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• Large-Scale Galaxy Bias
• The Connection between Galaxies and their Dark Matter Halos
• Galaxy Clustering in the Completed SDSS Redshift Survey: The Dependence on Color and Luminosity
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• 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
• Galaxies in N-body simulations: overcoming the overmerging problem
• 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
• Galaxy formation in WMAP1 and WMAP7 cosmologies
• A 2.5% measurement of the growth rate from small-scale redshift space clustering of SDSS-III CMASS galaxies
• Galaxy Assembly Bias: A Significant Source of Systematic Error in the Galaxy-Halo Relationship
• The Clustering of DESI-like Luminous Red Galaxies Using Photometric Redshifts
• Methods for Rapidly Processing Angular Masks of Next-Generation Galaxy Surveys
• Detection of the Splashback Radius and Halo Assembly bias of Massive Galaxy Clusters
• Cosmological Constraints from a Combination of Galaxy Clustering and Lensing -- III. Application to SDSS Data
• Cosmology from large-scale structure: Constraining $\Lambda$CDM with BOSS
• Introducing Decorated HODs: modeling assembly bias in the galaxy-halo connection
• Subhalo abundance matching and assembly bias in the EAGLE simulation
• A Re-examination of Galactic Conformity and a Comparison with Semi-analytic Models of Galaxy Formation
• The Impact of Assembly Bias on the Galaxy Content of Dark Matter Halos
• Is the dark-matter halo spin a predictor of galaxy spin and size?
• 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
• Forward Modeling of Large-Scale Structure: An open-source approach with Halotools
• Redshift-Space Clustering of SDSS Galaxies --- Luminosity Dependence, Halo Occupation Distribution, and Velocity Bias
• Evidence of Halo Assembly Bias in Massive Clusters
• A New Method to Correct for Fiber Collisions in Galaxy Two-Point Statistics
• The impact of assembly bias on the halo occupation in hydrodynamical simulations
• A scheme to deal accurately and efficiently with complex angular masks in galaxy surveys
• Nearest Neighbor distributions: new statistical measures for cosmological clustering
• The Dependence of Subhalo Abundance on Halo Concentration
• Dependence of cosmic shear covariances on cosmology - Impact on parameter estimation
• On Detecting Halo Assembly Bias with Galaxy Populations
• Revealing the galaxy-halo connection in IllustrisTNG
• Galaxy Assembly Bias on the Red Sequence
• The scale-dependence of relative galaxy bias: encouragement for the halo model description
• Constraints on Assembly Bias from Galaxy Clustering
• Dissecting and Modelling Galaxy Assembly Bias
• Detection of galaxy assembly bias
• The Evolution of Assembly Bias
• The Dependence of the Galaxy Luminosity Function on Large-Scale Environment
• Five-percent measurements of the growth rate from simulation-based modelling of redshift-space clustering in BOSS LOWZ
• The environmental dependence of galaxy clustering in the Sloan Digital Sky Survey
• Statistics of Dark Matter Substructure: III. Halo-to-Halo Variance
• Evidence for galaxy assembly bias in BOSS CMASS redshift-space galaxy correlation function
• A flexible modelling of galaxy assembly bias
• Accurate and Efficient Halo-based Galaxy Clustering Modelling with Simulations
• A KiDS weak lensing analysis of assembly bias in GAMA galaxy groups
• The manifestation of secondary halo bias on the galaxy population from IllustrisTNG300
• On the influence of halo mass accretion history on galaxy properties and assembly bias
• Illustrating galaxy-halo connection in the DESI era with IllustrisTNG
• New perspectives on the BOSS small-scale lensing discrepancy for the Planck $\Lambda$CDM Cosmology
• The nature of assembly bias - III. Observational properties
• Updated Results on the Galaxy-Halo Connection from Satellite Kinematics in SDSS
• The Effects of Halo Assembly Bias on Self-Calibration in Galaxy Cluster Surveys
• Detection of anisotropic galaxy assembly bias in BOSS DR12
• How are galaxies assigned to halos? Searching for assembly bias in the SDSS galaxy clustering
• Probing Galaxy Assembly Bias in BOSS Galaxies Using Void Probabilities
• Galaxy assembly bias of central galaxies in the Illustris simulation
• Towards Accurate Modelling of Galaxy Clustering on Small Scales: Testing the Standard $\Lambda \mathrm{CDM}$ + Halo Model
• How to Optimally Constrain Galaxy Assembly Bias: Supplement Projected Correlation Functions with Count-in-cells Statistics
• Probing galaxy assembly bias with LRG weak lensing observations
• Galaxy Formation in the Santa Cruz semi-analytic model compared with IllustrisTNG -- I. Galaxy scaling relations, dispersions, and residuals at z=0
• A Bayesian quantification of consistency in correlated datasets
• The Effects of Galaxy Assembly Bias on the Inference of Growth Rate from Redshift-Space Distortions
• Toward Accurate Modeling of Galaxy Clustering on Small Scales: Constraining the Galaxy-Halo Connection with Optimal Statistics
• Galaxy assembly bias and large-scale distribution: a comparison between IllustrisTNG and a semi-analytic model

Cited by in corpus (15)

• A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
• High-fidelity reproduction of central galaxy joint distributions with Neural Networks
• Late-formed halos prefer to host quiescent central galaxies. I. Observational results
• The Beyond-Halo Mass Effects of the Cosmic Web Environment on Galaxies
• Toward Accurate Modeling of Galaxy Clustering on Small Scales: Halo Model Extensions and Lingering Tension
• Galaxy assembly bias in the stellar-to-halo mass relation for red central galaxies from SDSS
• Unraveling emission line galaxy conformity at z~1 with DESI early data
• Characterizing the assembly of dark matter halos with protohalo size histories: I. Redshift evolution, relation to descendant halos, and halo assembly bias
• BASILISK II. Improved Constraints on the Galaxy-Halo Connection from Satellite Kinematics in SDSS
• One Galaxy Sample to Rule Them All: Halo Occupation Distribution Modeling of DES Year 3 Source Galaxies
• The invariance of group occupation across the cosmic web
• Towards an Observational Detection of Halo Spin Bias using Spin-Orbit Coherence
• On the dependence of galaxy assembly bias on the selection criteria, number density, and redshift of galaxy samples
• Imprints of tidal interactions on the stellar distribution of satellite galaxies: implications for dark matter deficient galaxies
• Correlation between Outlying Halo Abundance and Host Halo Properties