Dark Energy Survey Year 3 Results: Calibration of Lens Sample Redshift Distributions using Clustering Redshifts with BOSS/eBOSS

Abstract

We present clustering redshift measurements for Dark Energy Survey (DES) lens sample galaxies to be used in weak gravitational lensing and galaxy clustering studies. To perform this measurement, we cross-correlate with spectroscopic galaxies from the Baryon Acoustic Oscillation Survey (BOSS) and its extension, eBOSS. We validate our methodology in simulations, including a new technique to calibrate systematic errors due to the galaxy clustering bias, finding our method to be generally unbiased in calibrating the mean redshift. We apply our method to the data, and estimate the redshift distribution for eleven different photometrically-selected bins. We find general agreement between clustering redshift and photometric redshift estimates, with differences on the inferred mean redshift to be below $|\Delta z|=0.01$ in most of the bins. We also test a method to calibrate a width parameter for redshift distributions, which we found necessary to use for some of our samples. Our typical uncertainties on the mean redshift ranged from 0.003 to 0.008, while our uncertainties on the width ranged from 4 to 9\%. We discuss how these results calibrate the photometric redshift distributions used in companion DES Year 3 Results papers.

Updated text to match version accepted by MNRAS. Section 6 (particularly 6.3) adds comments relating this work to the Year-3 cosmology analysis. Chi^2 values added for main data. Appendix C expands error analysis. Table 4 clarifies notations. See https://www.darkenergysurvey.org/des-year-3-cosmology-results-papers/ for the full DES Y3 cosmology release

References in corpus (15)

• The 2.5 m Telescope of the Sloan Digital Sky Survey
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• Calibrating Redshift Distributions Beyond Spectroscopic Limits with Cross-Correlations
• Dark Energy Survey Year 3 Results: Photometric Data Set for Cosmology
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogs for Cosmological Analysis
• KiDS-1000 catalogue: Redshift distributions and their calibration
• The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogues and Measurement of the isotropic BAO between redshift 0.6 and 1.1 for the Emission Line Galaxy Sample
• Dark Energy Survey Year 3 Results: Clustering Redshifts -- Calibration of the Weak Lensing Source Redshift Distributions with redMaGiC and BOSS/eBOSS
• Reconstructing Redshift Distributions with Cross-Correlations: Tests and an Optimized Recipe
• Dark Energy Survey Year 3 Results: Optimizing the Lens Sample in Combined Galaxy Clustering and Galaxy-Galaxy Lensing Analysis
• Dark Energy Survey Year 3 Results: Galaxy clustering and systematics treatment for lens galaxy samples
• Testing KiDS cross-correlation redshifts with simulations
• Dark Energy Survey Year 3 Results: High-precision measurement and modeling of galaxy-galaxy lensing
• 2dFLenS and KiDS: Determining source redshift distributions with cross-correlations

Cited by in corpus (29)

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• Dark Energy Survey Year 3 Results: Galaxy clustering and systematics treatment for lens galaxy samples
• The Dark Energy Survey Year 3 and eBOSS: constraining galaxy intrinsic alignments across luminosity and colour space
• Revealing the late-time transition of $H_0$: relieve the Hubble crisis
• Dark Energy Survey: A 2.1% measurement of the angular Baryonic Acoustic Oscillation scale at redshift $z_{\mathrm{eff}}$=0.85 from the final dataset
• Cross-correlating dark sirens and galaxies: constraints on $H_0$ from GWTC-3 of LIGO-Virgo-KAGRA
• Joint analysis of DES Year 3 data and CMB lensing from SPT and Planck II: Cross-correlation measurements and cosmological constraints
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• Joint analysis of DES Year 3 data and CMB lensing from SPT and Planck I: Construction of CMB Lensing Maps and Modeling Choices
• A Composite Likelihood Approach for Inference under Photometric Redshift Uncertainty
• A viable varying speed of light model in the RW metric
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• Dark Energy Survey Year 3 Results: Redshift Calibration of the MagLim Lens Sample from the combination of SOMPZ and clustering and its impact on Cosmology
• Dark Energy Survey: Galaxy Sample for the Baryonic Acoustic Oscillation Measurement from the Final Dataset
• Euclid: Calibrating photometric redshifts with spectroscopic cross-correlations
• Review on the minimally extended varying speed of light model
• Dark Energy Survey Year 3 Results: Constraints on cosmological parameters and galaxy bias models from galaxy clustering and galaxy-galaxy lensing using the redMaGiC sample
• Field-level multiprobe analysis of the CMB, integrated Sachs-Wolfe effect, and the galaxy density maps
• Cosmography of the minimally extended Varying Speed of Light Model
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• Informed total-error-minimizing priors: Interpretable cosmological parameter constraints despite complex nuisance effects
• Optimizing Redshift Distribution Inference through Joint Self-Calibration and Clustering-Redshift Synergy
• Late Time Phenomena in $f(T,\mathcal{T})$ Gravity Framework: Role of $H_0$ Priors
• Reconstructing redshift distributions with photometric galaxy clustering
• Impact of Large-Scale Structure Systematics on Cosmological Parameter Estimation
• First measurement of the Hubble constant from a combined weak lensing and gravitational-wave standard siren analysis
• Improving Photometric Galaxy Clustering Constraints With Cross-Bin Correlations