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Dark Energy Survey Year 3 results: Galaxy clustering and systematics treatment for lens galaxy samples

Author
Rodríguez-Monroy, M.; García-Bellido Capdevila, Juanuntranslated; DES Collaboration
Entity
UAM. Departamento de Física Teórica
Publisher
Royal Astronomical Society; Oxford University Press
Date
2022-01-28
Citation
10.1093/mnras/stac104
Monthly Notices of the Royal Astronomical Society 511.2 (2022): 2665-2687
 
 
 
ISSN
0035-8711 (print); 1365-2966 (online)
DOI
10.1093/mnras/stac104
Project
Gobierno de España. ESP2017-89838-C3-1-R; Gobierno de España. PGC2018-094773-B-C33; Gobierno de España. PGC2018-102021-B-I00; Gobierno de España. SEV-2016-0588; Gobierno de España. SEV-2016-0597; info:eu-repo/grantAgreement/EC/FP7/240672/EU//COGS; info:eu-repo/grantAgreement/EC/FP7/291329/EU//TESTDE; info:eu-repo/grantAgreement/EC/FP7/306478/EU//COSMICDAWN
Editor's Version
https://doi.org/10.1093/mnras/stac104
Subjects
Large-Scale Structure of the Universe; Dark Energy; Cosmological Parameters; Cosmology: Observations; Física
URI
http://hdl.handle.net/10486/704406
Note
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiere
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Monthly Notices of the Royal Astronomical Society 511.2 (2022): 2665-2687 is available online at: https://academic.oup.com/mnras/article-abstract/511/2/2665/6516441?redirectedFrom=fulltext#no-access-message
Rights
© 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Abstract

In this work, we present the galaxy clustering measurements of the two DES lens galaxy samples: a magnitude-limited sample optimized for the measurement of cosmological parameters, MAGLIM, and a sample of luminous red galaxies selected with the REDMAGIC algorithm. MAGLIM/REDMAGIC sample contains over 10 million/2.5 million galaxies and is divided into six/five photometric redshift bins spanning the range z ∈ [0.20, 1.05]/z ∈ [0.15, 0.90]. Both samples cover 4143 deg2 over which we perform our analysis blind, measuring the angular correlation function with an S/N ∼ 63 for both samples. In a companion paper, these measurements of galaxy clustering are combined with the correlation functions of cosmic shear and galaxy–galaxy lensing of each sample to place cosmological constraints with a 3 × 2pt analysis. We conduct a thorough study of the mitigation of systematic effects caused by the spatially varying survey properties and we correct the measurements to remove artificial clustering signals. We employ several decontamination methods with different configurations to ensure the robustness of our corrections and to determine the systematic uncertainty that needs to be considered for the final cosmology analyses. We validate our fiducial methodology using lognormal mocks, showing that our decontamination procedure induces biases no greater than 0.5σ in the (Ωm, b) plane, where b is the galaxy bias
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Google™ Scholar:Rodríguez-Monroy, M. - García-Bellido Capdevila, Juan - DES Collaboration

This item appears in the following Collection(s)

  • Producción científica en acceso abierto de la UAM [17777]

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All the documents from Biblos-e Archivo are protected by copyrights. Some rights reserved.
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