Building a digital twin of a luminous red galaxy spectroscopic survey: galaxy properties and clustering covariance

Abstract

Luminous red galaxies (LRGs) are one of the key tracers of the large-scale structure of the Universe used by galaxy surveys. Hence, it is important to make accurate predictions for their properties and clustering, including the errors on these statistics. Here, we describe a novel technique which uses the semi-analytical model of galaxy formation {\sc Galform}, embedded in the high-resolution $N$-body Planck-Millennium simulation, to populate a thousand halo catalogues generated using the Parallel-PM $N$-body {\sc glam} code. Our hybrid scheme allows us to make clustering predictions on scales that cannot be modelled in the original $N$-body simulation. LRGs are selected in the redshift range $z=0.6-1$ from the {\sc Galform} output using similar colour-magnitude cuts in the $r$, $z$ and $W1$ bands to those that will be applied in the Dark Energy Spectroscopic Instrument (DESI) survey. We find that the LRG-halo connection is non-trivial, leading to the prediction of a non-standard halo occupation distribution; in particular, the occupation of central galaxies does not reach unity for the most massive haloes, and drops with increasing mass. The {\sc glam} catalogues reproduce the abundance and clustering of the LRGs predicted by {\sc Galform}, and show good agreement with recent measurements of the clustering of DESI-like LRGs using photometric redshifts. We use the \glam{} mocks to compute the covariance matrices for the two-point correlation function and power spectrum of the LRGs and their background dark matter density field, revealing important differences. We also make predictions for the linear-growth rate and the baryon acoustic oscillations distances at $z=0.6$, $0.74$ and $0.93$. All DESI-like LRG catalogues are made publicly available.

arXiv comment22 pages, 18 figure, submitted to MNRAS, the galaxy catalogues are available at http://www.skiesanduniverses.org/

References in corpus (100)

• emcee: The MCMC Hammer
• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• Planck 2013 results. XVI. Cosmological parameters
• The cosmological simulation code GADGET-2
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• 4D Gravity on a Brane in 5D Minkowski Space
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Populating a cluster of galaxies - I. Results at z=0
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• The broken hierarchy of galaxy formation
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Baryonic Features in the Matter Transfer Function
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• Hierarchical Galaxy Formation
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Overview of the DESI Legacy Imaging Surveys
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Power Spectrum Analysis of Three-Dimensional Redshift Surveys
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• The 2dF Galaxy Redshift Survey: correlation functions, peculiar velocities and the matter density of the Universe
• The Connection between Galaxies and their Dark Matter Halos
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• A primer on hierarchical galaxy formation: the semi-analytical approach
• The 6dF Galaxy Survey: z \approx 0 measurement of the growth rate and sigma_8
• The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9
• Sample Variance Considerations for Cluster Surveys
• A unified multi-wavelength model of galaxy formation
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: First measurement of Baryon Acoustic Oscillations between redshift 0.8 and 2.2
• Early-type galaxies in the SDSS. III. The Fundamental Plane
• Interpreting large-scale redshift-space distortion measurements
• Galacticus: A Semi-Analytic Model of Galaxy Formation
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic correlation function between redshifts 0.6 and 1
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic power spectrum between redshifts 0.6 and 1.0
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: a large sample of mock galaxy catalogues
• Linear Redshift Distortions: A Review
• The Clustering of the SDSS Main Galaxy Sample II: Mock galaxy catalogues and a measurement of the growth of structure from Redshift Space Distortions at $z=0.15$
• nbodykit: an open-source, massively parallel toolkit for large-scale structure
• The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at $z\sim 1.4$
• Galaxy And Mass Assembly (GAMA): improved cosmic growth measurements using multiple tracers of large-scale structure
• The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue
• Halo Occupation Distribution Modeling of Clustering of Luminous Red Galaxies
• The Intermediate-Scale Clustering of Luminous Red Galaxies
• Colors, magnitudes and velocity dispersions in early-type galaxies: Implications for galaxy ages and metallicities
• The Clustering of DESI-like Luminous Red Galaxies Using Photometric Redshifts
• Red Galaxy Growth and the Halo Occupation Distribution
• A new model of galaxy formation: How sensitive are predicted galaxy luminosities to the choice of SPS model?
• N-body Dark Matter Haloes with simple Hierarchical Histories
• Cosmology from large-scale structure: Constraining $\Lambda$CDM with BOSS
• Fourier Analysis of Redshift Space Distortions and the Determination of Omega
• The 2dF-SDSS LRG and QSO survey: Evolution of the Luminosity Function of Luminous Red Galaxies to z=0.6
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at redshift of 0.72 with the DR14 Luminous Red Galaxy Sample
• Cosmological parameter constraints from SDSS luminous red galaxies: a new treatment of large-scale clustering
• Clustering of luminous red galaxies I: large scale redshift space distortions
• A new way of setting the phases for cosmological multi-scale Gaussian initial conditions
• The 2dF-SDSS LRG and QSO survey: evolution of the clustering of luminous red galaxies since z = 0.6
• Second-order Lagrangian perturbation theory initial conditions for resimulations
• The SDSS-IV extended Baryonic Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection
• Galaxy formation in the Planck Millennium: the atomic hydrogen content of dark matter halos
• The real-space clustering of luminous red galaxies around z<0.6 quasars in the Sloan Digital Sky Survey
• Halo-model signatures from 380,000 SDSS Luminous Red Galaxies with photometric redshifts
• Comparing approximate methods for mock catalogues and covariance matrices II: Power spectrum multipoles
• Comparing approximate methods for mock catalogues and covariance matrices I: correlation function
• Preliminary Target Selection for the DESI Luminous Red Galaxy (LRG) Sample
• Dark matter statistics for large galaxy catalogs: power spectra and covariance matrices
• The host dark matter halos of [OII] emitters at 0.5< z< 1.5
• Comparing approximate methods for mock catalogues and covariance matrices III: Bispectrum
• How robust are predictions of galaxy clustering?
• The clustering of luminous red galaxies at z $\sim$ 0.7 from eBOSS and BOSS data
• Validating estimates of the growth rate of structure with modified gravity simulations
• A Lightcone Catalogue from the Millennium-XXL Simulation
• Particle-Mesh code for cosmological simulations
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 LRG sample: structure growth rate measurement from the anisotropic LRG correlation function in the redshift range 0.6 < z < 1.0
• Clustering of luminous red galaxies II: small scale redshift space distortions
• The structural and photometric properties of early-type galaxies in hierarchical models
• The Small-scale Clustering of Luminous Red Galaxies via Cross-Correlation Techniques
• Large-scale redshift space distortions in modified gravity theories
• Predicting Hα emission line galaxy counts for future galaxy redshift surveys
• The evolution of the stellar mass versus halo mass relationship
• Clustering of photometric luminous red galaxies I : Growth of Structure and Baryon Acoustic Feature
• Modelling Galaxy Merger Timescales and Tidal Destruction
• Imaging Systematics and Clustering of DESI Main Targets
• Luminous Red Galaxies in hierarchical cosmologies
• Do model emission line galaxies live in filaments at z~1?
• The galaxy - dark matter halo connection: which galaxy properties are correlated with the host halo mass?
• Extensions to the halo occupation distribution model for more accurate clustering predictions
• Linear bias forecasts for emission line cosmological surveys
• A new methodology to test galaxy formation models using the dependence of clustering on stellar mass
• The Clustering Evolution of Dusty Star-Forming Galaxies
• Robustness of the covariance matrix for galaxy clustering measurements
• A semi-analytical perspective on massive galaxies at $z\sim 0.55$
• Measuring the BAO peak position with different galaxy selections

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• DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
• Fast full $N$-body simulations of generic modified gravity: derivative coupling models
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• Cosmological Probes of Structure Growth and Tests of Gravity
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