Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization

M. Gatti; P. Vielzeuf; C. Davis; R. Cawthon; M. M. Rau; J. DeRose; J. De Vicente; A. Alarcon; E. Rozo; E. Gaztanaga; B. Hoyle; R. Miquel; G. M. Bernstein; C. Bonnett; A. Carnero Rosell; F. J. Castander; C. Chang; L. N. da Costa; D. Gruen; J. Gschwend; W. G. Hartley; H. Lin; N. MacCrann; M. A. G. Maia; R. L. C. Ogando; A. Roodman; I. Sevilla-Noarbe; M. A. Troxel; R. H. Wechsler; J. Asorey; T. M. Davis; K. Glazebrook; S. R. Hinton; G. Lewis; C. Lidman; E. Macaulay; A. Moeller; C. R. O'Neill; N. E. Sommer; S. A. Uddin; F. Yuan; B. Zhang; T. M. C. Abbott; S. Allam; J. Annis; K. Bechtol; D. Brooks; D. L. Burke; D. Carollo; M. Carrasco Kind; J. Carretero; C. E. Cunha; C. B. D'Andrea; D. L. Depoy; S. Desai; T. F. Eifler; A. E. Evrard; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; D. W. Gerdes; D. A. Goldstein; R. A. Gruendl; G. Gutierrez; K. Honscheid; J. K. Hoormann; B. Jain; D. J. James; M. Jarvis; T. Jeltema; M. W. G. Johnson; M. D. Johnson; E. Krause; K. Kuehn; S. Kuhlmann; N. Kuropatkin; T. S. Li; M. Lima; J. L. Marshall; P. Melchior; F. Menanteau; R. C. Nichol; B. Nord; A. A. Plazas; K. Reil; E. S. Rykoff; M. Sako; E. Sanchez; V. Scarpine; M. Schubnell; E. Sheldon; M. Smith; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; B. E. Tucker; D. Thomas; D. L. Tucker; V. Vikram; A. R. Walker; J. Weller; W. Wester; R. C. Wolf

doi:10.1093/mnras/sty466

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Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization

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Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization

M. Gatti, P. Vielzeuf, C. Davis, R. Cawthon, M. M. Rau, J. DeRose, J. De Vicente, A. Alarcon, E. Rozo, E. Gaztanaga, …

Monthly notices of the Royal Astronomical Society, Vol.477(2), pp.1651-1669

21/06/2018

DOI: https://doi.org/10.1093/mnras/sty466

Abstract

Astronomy & Astrophysics

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Physical Sciences

We use numerical simulations to characterize the performance of a clustering-based method to calibrate photometric redshift biases. In particular, we cross-correlate the weak lensing source galaxies from the Dark Energy Survey Year 1 sample with redMaGiC galaxies (luminous red galaxies with secure photometric redshifts) to estimate the redshift distribution of the former sample. The recovered redshift distributions are used to calibrate the photometric redshift bias of standard photo-z methods applied to the same source galaxy sample. We apply the method to two photo-z codes run in our simulated data: Bayesian Photometric Redshift and Directional Neighbourhood Fitting. We characterize the systematic uncertainties of our calibration procedure, and find that these systematic uncertainties dominate our error budget. The dominant systematics are due to our assumption of unevolving bias and clustering across each redshift bin, and to differences between the shapes of the redshift distributions derived by clustering versus photo-zs. The systematic uncertainty in the mean redshift bias of the source galaxy sample is Delta z less than or similar to 0.02, though the precise value depends on the redshift bin under consideration. We discuss possible ways to mitigate the impact of our dominant systematics in future analyses.

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Title: Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization
Creators: M. Gatti - Universidade Aberta
P. Vielzeuf - Universidade Aberta
C. Davis - Stanford Univ, Kavli Inst for Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USA
R. Cawthon - University of Chicago
M. M. Rau - Ludwig-Maximilians-Universität München
J. DeRose - Kavli Institute for Particle Astrophysics and Cosmology
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
A. Alarcon - S&N
E. Rozo - University of Arizona
E. Gaztanaga - Institute of Space Sciences
B. Hoyle - Ludwig-Maximilians-Universität München
R. Miquel - Universidade Aberta
G. M. Bernstein - Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
C. Bonnett - Universidade Aberta
A. Carnero Rosell - Laboratório Interinstitucional de e-Astronomia
F. J. Castander - S&N
C. Chang - University of Chicago
L. N. da Costa - The Ohio State University
D. Gruen - Menlo School
J. Gschwend - Laboratório Interinstitucional de e-Astronomia
W. G. Hartley - UCL, Dept Phys & Astron, Gower Sheet, London WC1E 6B1, England
H. Lin - Fermi National Accelerator Laboratory
N. MacCrann - The Ohio State University
M. A. G. Maia - Laboratório Interinstitucional de e-Astronomia
R. L. C. Ogando - Inter-Laboratory and Astronomy
A. Roodman - Stanford University
I. Sevilla-Noarbe - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. A. Troxel - The Ohio State University
R. H. Wechsler - SLAC National Accelerator Laboratory
J. Asorey - Korea Astronomy and Space Science Institute
T. M. Davis - University of Queensland
K. Glazebrook - Swinburne University of Technology
S. R. Hinton - University of Queensland
G. Lewis - ARC Centre of Excellence for All-sky Astrophysics
C. Lidman - Supreme Council Of Health
E. Macaulay - University of Portsmouth
A. Moeller - Sky
C. R. O'Neill - Sky
N. E. Sommer - Sky
S. A. Uddin - Sky
F. Yuan - ARC Centre of Excellence for All-sky Astrophysics
B. Zhang - ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia
T. M. C. Abbott - Cerro Tololo Inter-American Observatory
S. Allam - Fermi National Accelerator Laboratory
J. Annis - Fermi National Accelerator Laboratory
K. Bechtol - Large Synoptic Survey Telescope Corporation
D. Brooks - University College London
D. L. Burke - Stanford University
D. Carollo - Sky
M. Carrasco Kind - University of Illinois at Urbana Champaign
J. Carretero - Institute for High Energy Physics
C. E. Cunha - Stanford University
C. B. D'Andrea - Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
D. L. Depoy - Texas A&M University
S. Desai - Indian Institute of Technology Hyderabad
T. F. Eifler - University of Arizona
A. E. Evrard - University of Michigan–Ann Arbor
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - S&N
J. Frieman - University of Chicago
J. Garcia-Bellido - Autonomous University of Madrid
D. W. Gerdes - University of Michigan–Ann Arbor
D. A. Goldstein - Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA
R. A. Gruendl - University of Illinois Urbana-Champaign
G. Gutierrez - Fermi National Accelerator Laboratory
K. Honscheid - The Ohio State University
J. K. Hoormann - University of Queensland
B. Jain - University of Pennsylvania
D. J. James - Univ Washington, Astron Dept, Box 351580, Seattle, WA 98195 USA
M. Jarvis - University of Pennsylvania
T. Jeltema - University of California, Santa Cruz
M. W. G. Johnson - Osserv Astron Torino, INAF, Via Osservatorio 20, I-10025 Pino Torinese, Italy
M. D. Johnson - Osserv Astron Torino, INAF, Via Osservatorio 20, I-10025 Pino Torinese, Italy
E. Krause - Stanford Univ, Kavli Inst for Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USA
K. Kuehn - Macquarie University
S. Kuhlmann - Argonne National Laboratory
N. Kuropatkin - Fermi National Accelerator Laboratory
T. S. Li - Fermi National Accelerator Laboratory
M. Lima - Laboratório Interinstitucional de e-Astronomia
J. L. Marshall - Texas A&M University
P. Melchior - Princeton University
F. Menanteau - Clark Art Institute
R. C. Nichol - University of Portsmouth
B. Nord - Fermi National Accelerator Laboratory
A. A. Plazas - California Institute of Technology
K. Reil - SLAC National Accelerator Laboratory
E. S. Rykoff - Stanford University
M. Sako - University of Pennsylvania
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
V. Scarpine - Fermi National Accelerator Laboratory
M. Schubnell - University of Michigan–Ann Arbor
E. Sheldon - Brookhaven Natl Lab, Bldg 510, Upton, NY 11973 USA
M. Smith - University of Southampton
R. C. Smith - Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile
M. Soares-Santos - Brandeis University
F. Sobreira - Laboratório Interinstitucional de e-Astronomia
E. Suchyta - Oak Ridge National Laboratory
M. E. C. Swanson - Clark Art Institute
G. Tarle - University of Michigan–Ann Arbor
B. E. Tucker - Supreme Council Of Health
D. Thomas - University of Portsmouth
D. L. Tucker - Fermi National Accelerator Laboratory
V. Vikram - Argonne National Laboratory
A. R. Walker - Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile
J. Weller - Max Planck Institute for Extraterrestrial Physics
W. Wester - Fermi National Accelerator Laboratory
R. C. Wolf
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.477(2), pp.1651-1669
Publisher: Oxford Univ Press
Number of pages: 19
Date published: 21/06/2018
Grant note: University of Edinburgh University of Chicago Kavli Institute of Cosmological Physics at the University of Chicago 1125897 / Division Of Physics; Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Ministerio da Ciencia, Tecnologia e Inovacao; Spanish Government Ministry of Science and Education of Spain; Spanish Government Institut de Ciencies de l'Espai (IEEC/CSIC) DE-AC02-05CH11231 / Office of Science of the US Department of Energy; United States Department of Energy (DOE) Ohio State University University of Pennsylvania Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid AST-1138766; AST-1536171 / National Science Foundation; National Science Foundation (NSF) Stanford University AYA2015-71825; ESP2015-88861; FPA2015-68048; SEV-2012-0234; SEV-2016-0597; MDM-2015-0509 / MINECO; Spanish Government US Department of Energy; United States Department of Energy (DOE) University of Portsmouth Fermi National Accelerator Laboratory; United States Department of Energy (DOE); University of Chicago OzDES Membership Consortium DP160100930 / Australian Government through Australian Research Council; Australian Research Council Center for Cosmology and Astro-Particle Physics at the Ohio State University; Ohio State University Texas AM University University of Nottingham DE-SC0015975 / DOE; United States Department of Energy (DOE) FG-2016-6443 / Sloan Foundation; Alfred P. Sloan Foundation DES-Brazil Consortium National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) Eidgenossische Technische Hochschule (ETH) Zurich; ETH Zurich associated Excellence Cluster Universe, the University of Michigan University of Cambridge 240672; 291329; 306478 / European Research Council under European Union, ERC; European Research Council (ERC) DE-AC02-07CH11359 / US Department of Energy, Office of Science, Office of High Energy Physics; United States Department of Energy (DOE) NAS8-03060 / NASA; National Aeronautics & Space Administration (NASA) National Optical Astronomy Observatory; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) 1311924 / Direct For Mathematical & Physical Scien; Division Of Astronomical Sciences; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Institut de Fisica d'Altes Energies, Lawrence Berkeley National Laboratory European Union; European Union (EU) University of California at Santa Cruz Ludwig-Maximilians Universitat Munchen ST/I001204/1; 1244451; ST/F002335/1; ST/M002853/1; ST/K00090X/1; ST/M007030/1; ST/J005428/1; ST/M004708/1; ST/L005573/1; ST/K006797/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) SLAC National Accelerator Laboratory; Stanford University; United States Department of Energy (DOE) Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ) ST/M002853/1; ST/N000668/1; ST/K00090X/1; ST/F002335/1; ST/I001204/1; ST/J005428/1; ST/M004708/1; ST/K006797/1; ST/M007030/1; ST/L005573/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) University College London Financiadora de Estudos e Projetos; Financiadora de Inovacao e Pesquisa (Finep) PF5-160138 / NASA through Einstein Postdoctoral Fellowship - Chandra X-ray Center US National Science Foundation; National Science Foundation (NSF) Argonne National Laboratory; United States Department of Energy (DOE) Higher Education Funding Council for England; UK Research & Innovation (UKRI); Higher Education Funding Council for England (HEFCE) Centro de Investigaciones Energeticas University of Illinois at Urbana-Champaign CERCA program of the Generalitat de Catalunya CE110001020 / Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO); Australian Research Council Science and Technology Facilities Council of the United Kingdom; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) University of Sussex
Identifiers: 99783693002346
Academic Unit: Faculty of Engineering and Physical Sciences; FEPS Central Faculty Admin
Language: English
Resource Type: Journal article

Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization

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