First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

D. Brout; D. Scolnic; R. Kessler; C. B. D'Andrea; T. M. Davis; R. R. Gupta; S. R. Hinton; A. G. Kim; J. Lasker; C. Lidman; E. Macaulay; A. Moller; R. C. Nichol; M. Sako; M. Smith; M. Sullivan; B. Zhang; P. Andersen; J. Asorey; A. Avelino; B. A. Bassett; P. Brown; J. Calcino; D. Carollo; P. Challis; M. Childress; A. Clocchiatti; A. Filippenko; R. J. Foley; L. Galbany; K. Glazebrook; J. K. Hoormann; E. Kasai; R. P. Kirshner; K. Kuehn; S. Kuhlmann; G. F. Lewis; K. S. Mandel; M. March; Miranda; E. Morganson; D. Muthukrishna; P. Nugent; A. Palmese; Y-C Pan; R. Sharp; N. E. Sommer; E. Swann; R. C. Thomas; B. E. Tucker; S. A. Uddin; W. Wester; T. M. C. Abbott; S. Allam; J. Annis; S. Avila; K. Bechtol; G. M. Bernstein; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; C. E. Cunha; L. N. da Costa; C. Davis; J. De Vicente; D. L. DePoy; S. Desai; H. T. Diehl; P. Doel; A. Drlica-Wagner; T. F. Eifler; J. Estrada; E. Fernandez; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; D. Gruen; R. A. Gruendl; G. Gutierrez; W. G. Hartley; D. L. Hollowood; K. Honscheid; B. Hoyle; D. J. James; M. Jarvis; T. Jeltema; E. Krause; O. Lahav; T. S. Li; M. Lima; M. A. G. Maia; J. Marriner; J. L. Marshall; P. Martini; F. Menanteau; C. J. Miller; R. Miquel; R. L. C. Ogando; A. A. Plazas; A. K. Romer; A. Roodman; E. S. Rykoff; E. Sanchez; B. Santiago; Scarpine; M. Schubnell; S. Serrano; Sevilla-Noarbe; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Thomas; M. A. Troxel; D. L. Tucker; V. Vikram; A. R. Walker; Y. Zhang; DES Collaboration

doi:10.3847/1538-4357/ab08a0

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First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

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First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

D. Brout, D. Scolnic, R. Kessler, C. B. D'Andrea, T. M. Davis, R. R. Gupta, S. R. Hinton, A. G. Kim, J. Lasker, C. Lidman, …

The Astrophysical journal, Vol.874(2), p.150

02/04/2019

DOI: https://doi.org/10.3847/1538-4357/ab08a0

Abstract

Astronomy & Astrophysics

Science & Technology

Physical Sciences

We present the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified SNe Ia from the first 3 years of the Dark Energy Survey Supernova Program (DES-SN), spanning a redshift range of 0.017 < z < 0.849. We combine the DES-SN sample with an external sample of 122 low-redshift (z < 0.1) SNe. Ia, resulting in a "DES-SN3YR" sample of 329 SNe Ia. Our cosmological analyses are blinded: after combining our DES-SN3YR distances with constraints from the Cosmic Microwave Background, our uncertainties in the measurement of the dark energy equation-of-state parameter, w, are 0.042. (stat) and 0.059 (stat+syst) at 68% confidence. We provide a detailed systematic uncertainty budget, which has nearly equal contributions from photometric calibration, astrophysical bias corrections, and instrumental bias corrections. We also include several new sources of systematic uncertainty. While our sample is less than one-third the size of the Pantheon sample, our constraints on w are only larger by 1.4x, showing the impact of the DES-SN. Ia light-curve quality. We find that the traditional stretch and color standardization parameters of the DES-SNe. Ia are in agreement with earlier SN. Ia samples such as Pan-STARRS1 and the Supernova Legacy Survey. However, we find smaller intrinsic scatter about the Hubble diagram (0.077 mag). Interestingly, we find no evidence for a Hubble residual step (0.007 +/- 0.018 mag) as a function of host-galaxy mass for the DES subset, in 2.4 sigma tension with previous measurements. We also present novel validation methods of our sample using simulated SNe. Ia inserted in DECam images and using large catalog-level simulations to test for biases in our analysis pipelines.

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Title: First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation
Creators: D. Brout - University of Pennsylvania
D. Scolnic - University of Chicago
R. Kessler - University of Chicago
C. B. D'Andrea - University of Pennsylvania
T. M. Davis - University of Queensland
R. R. Gupta - Lawrence Berkeley National Laboratory
S. R. Hinton - University of Queensland
A. G. Kim - Lawrence Berkeley National Laboratory
J. Lasker - University of Chicago
C. Lidman - Australian National University
E. Macaulay - University of Portsmouth
A. Moller - Australian National University
R. C. Nichol - University of Portsmouth
M. Sako - University of Pennsylvania
M. Smith - University of Southampton
M. Sullivan - University of Southampton
B. Zhang - Australian National University
P. Andersen - University of Copenhagen
J. Asorey - Korea Astronomy and Space Science Institute
A. Avelino - Center for Astrophysics Harvard & Smithsonian
B. A. Bassett - African Institute for Mathematical Sciences
P. Brown - Mitchell Institute
J. Calcino - University of Queensland
D. Carollo - Osservatorio Astrofisico di Torino
P. Challis - Center for Astrophysics Harvard & Smithsonian
M. Childress - University of Southampton
A. Clocchiatti - Millennium Institute of Astrophysics
A. Filippenko - University of California, Berkeley
R. J. Foley - Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
L. Galbany - University of Pittsburgh
K. Glazebrook - Swinburne University of Technology
J. K. Hoormann - University of Queensland
E. Kasai - University of Namibia
R. P. Kirshner - Gordon and Betty Moore Foundation
K. Kuehn - Australian Astronomical Observatory
S. Kuhlmann - Argonne National Laboratory
G. F. Lewis - University of Sydney
K. S. Mandel - Institute of Astronomy and Kavli Institute for Cosmology, Madingley Road, Cambridge, CB3 0HA, UK
M. March - University of Pennsylvania
Miranda - Steward Observ, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USA
E. Morganson - National Center for Supercomputing Applications
D. Muthukrishna - ARC Centre of Excellence for All-sky Astrophysics
P. Nugent - Lawrence Berkeley National Laboratory
A. Palmese - Fermi National Accelerator Laboratory
Y-C Pan - National Astronomical Observatory of Japan
R. Sharp - Australian National University
N. E. Sommer - Australian National University
E. Swann - University of Portsmouth
R. C. Thomas - Lawrence Berkeley National Laboratory
B. E. Tucker - ARC Centre of Excellence for All-sky Astrophysics
S. A. Uddin - Carnegie Observatories
W. Wester - Fermi National Accelerator Laboratory
T. M. C. Abbott - Cerro Tololo Inter-American Observatory
S. Allam - Fermi National Accelerator Laboratory
J. Annis - Fermi National Accelerator Laboratory
S. Avila - University of Portsmouth
K. Bechtol - Large Synoptic Survey Telescope Corporation
G. M. Bernstein - University of Pennsylvania
E. Bertin - Institut d'Astrophysique de Paris
D. Brooks - University College London
D. L. Burke - SLAC National Accelerator Laboratory
A. Carnero Rosell - CIEMAT, Madrid, Spain
M. Carrasco Kind - National Center for Supercomputing Applications
J. Carretero - Institute for High Energy Physics
F. J. Castander - Institut d'Estudis Espacials de Catalunya
C. E. Cunha - Stanford University
L. N. da Costa - Laboratório Interinstitucional de e-Astronomia
C. Davis - Kavli Institute for Particle Astrophysics and Cosmology
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
D. L. DePoy - Texas A&M University
S. Desai - Indian Institute of Technology Hyderabad
H. T. Diehl - Fermi National Accelerator Laboratory
P. Doel - University College London
A. Drlica-Wagner - Fermi National Accelerator Laboratory
T. F. Eifler - Jet Propulsion Laboratory
J. Estrada - Fermi National Accelerator Laboratory
E. Fernandez - Institute for High Energy Physics
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - Institut d'Estudis Espacials de Catalunya
J. Frieman - University of Chicago
J. Garcia-Bellido - Autonomous University of Madrid
D. Gruen - Kavli Institute for Particle Astrophysics and Cosmology
R. A. Gruendl - National Center for Supercomputing Applications
G. Gutierrez - Fermi National Accelerator Laboratory
W. G. Hartley - University College London
D. L. Hollowood - Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
K. Honscheid - The Ohio State University
B. Hoyle - Ludwig-Maximilians-Universität München
D. J. James - Center for Astrophysics Harvard & Smithsonian
M. Jarvis - University of Pennsylvania
T. Jeltema - Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
E. Krause - Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
O. Lahav - University College London
T. S. Li - University of Chicago
M. Lima - Universidade de São Paulo
M. A. G. Maia - Laboratório Interinstitucional de e-Astronomia
J. Marriner - Fermi National Accelerator Laboratory
J. L. Marshall - Mitchell Institute
P. Martini - The Ohio State University
F. Menanteau - National Center for Supercomputing Applications
C. J. Miller - Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
R. Miquel - Universidade Aberta
R. L. C. Ogando - Laboratório Interinstitucional de e-Astronomia
A. A. Plazas - California Institute of Technology
A. K. Romer - University of Sussex
A. Roodman - Stanford University
E. S. Rykoff - Stanford University
E. Sanchez - CIEMAT, Madrid, Spain
B. Santiago - Laboratório Interinstitucional de e-Astronomia
Scarpine - Fermi National Accelerator Laboratory
M. Schubnell - Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
S. Serrano - IEEC, E-08034 Barcelona, Spain
Sevilla-Noarbe - CIEMAT, Madrid, Spain
R. C. Smith - Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, Casilla 603, La Serena, Chile
M. Soares-Santos - Brandeis University
F. Sobreira - Laboratório Interinstitucional de e-Astronomia
E. Suchyta - Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA
M. E. C. Swanson - Clark Art Institute
G. Tarle - Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
D. Thomas - University of Portsmouth
M. A. Troxel - The Ohio State University
D. L. Tucker - Fermi National Accelerator Laboratory
V. Vikram - Argonne Natl Lab, 9700 South Cass Ave, Lemont, IL 60439 USA
A. R. Walker - Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, Casilla 603, La Serena, Chile
Y. Zhang - Fermi National Accelerator Laboratory
DES Collaboration
Publication Details: The Astrophysical journal, Vol.874(2), p.150
Publisher: IOP Publishing Ltd
Number of pages: 29
Date published: 02/04/2019
Grant note: University of Edinburgh University of Chicago U.S. Department of Energy; United States Department of Energy (DOE) Kavli Institute of Cosmological Physics at the University of Chicago Lawrence Berkeley National Laboratory; United States Department of Energy (DOE) 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) Ohio State University CN2015B-89 / Magellan Observatory University College London; General Electric University of Pennsylvania Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid U.S. National Science Foundation; National Science Foundation (NSF) AST-1138766; AST-1536171 / National Science Foundation; National Science Foundation (NSF) Stanford University University of Portsmouth Fermi National Accelerator Laboratory; United States Department of Energy (DOE); University of Chicago OzDES Membership Consortium Center for Cosmology and Astro-Particle Physics at the Ohio State University; Ohio State University University of Michigan; University of Michigan System University of Nottingham ESO 093.A0749(A); 094.A-0310(B); 095.A-0316(A); 096.A-0536(A); 095.D-0797(A) / Very Large Telescope DE-FOA-0001358 / DOE; United States Department of Energy (DOE) DE-AC02-07CH11359 / U.S. Department of Energy, Office of Science, Office of High Energy Physics; United States Department of Energy (DOE) DE-AC02-05CH11231 / Office of Science of the U.S. Department of Energy; United States Department of Energy (DOE) 465376/2014-2 / Brazilian Instituto Nacional de Ciencia e Tecnologia (INCT) e-universe (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ); Fundacao de Apoio a Pesquisa do Distrito Federal (FAPDF) DES-Brazil Consortium U063-2013B; U021-2014B; U048-2015B; U038-2016A / Keck Observatory National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign AST-1517742 / NSF; National Science Foundation (NSF) 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 University of Cambridge Institut de Fisica d'Altes Energies GTC77-13B; GTC70-14B; GTC101-15B / Gran Telescopio Canarias ATAC A/2013B/12; NOAO 2013B-0317 / Anglo-Australian Telescope National Optical Astronomy Observatory; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) 2013-1RSA_OTH-023; 2013-2-RSA_OTH-018; 2014-1-RSA_OTH016; 2014-2-SCI-070; 2015-1-SCI-063; 2015-2-SCI-061 / South African Large Telescope University of California at Santa Cruz Ludwig-Maximilians Universitat Munchen University of Chicago Research Computing Center Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013) SLAC National Accelerator Laboratory; Stanford University; United States Department of Energy (DOE) AYA2015-71825; ESP2015-66861; FPA2015-68048; SEV-2016-0588; SEV-2016-0597; MDM-2015-0509 / MINECO; Spanish Government 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) 2014c-SAO-4; 2015a-SAO-12; 2015c-SAO-21 / MMT Financiadora de Estudos e Projetos; Financiadora de Inovacao e Pesquisa (Finep) Texas A M University Argonne National Laboratory; United States Department of Energy (DOE) A/2013B/012 / Australian Astronomical Observatory Higher Education Funding Council for England; UK Research & Innovation (UKRI); Higher Education Funding Council for England (HEFCE) University of Illinois at Urbana-Champaign NOAO 2013A-0373/GS-2013B-Q-45; NOAO 2015B-0197/GS-2015B-Q-7; GS-2015B-Q-8 / Gemini Observatory ST/L000652/1; ST/P000525/1; ST/R000506/1; ST/N001087/1; ST/M003574/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) CERCA program of the Generalitat de Catalunya CE110001020 / Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO); Australian Research Council ERDF funds from the European Union Science and Technology Facilities Council of the United Kingdom; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) Excellence Cluster universe University of Sussex Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO); Australian Research Council 240672; 291329; 306478; 615929 / ERC; European Research Council (ERC); European Commission
Identifiers: 99783822102346
Academic Unit: FEPS Central Faculty Admin
Language: English
Resource Type: Journal article

First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

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