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dc.contributor.authorHoyle, B
dc.contributor.authorGruen, D
dc.contributor.authorBernstein, G M
dc.contributor.authorRau, M M
dc.contributor.authorDe Vicente, J
dc.contributor.authorHartley, W G
dc.contributor.authorGaztanaga, E
dc.contributor.authorDeRose, J
dc.contributor.authorTroxel, M A
dc.contributor.authorDavis, C
dc.contributor.authorAlarcon, A
dc.contributor.authorMacCrann, N
dc.contributor.authorPrat, J
dc.contributor.authorSánchez, C
dc.contributor.authorSheldon, E
dc.contributor.authorWechsler, R H
dc.contributor.authorAsorey, J
dc.contributor.authorBecker, M R
dc.contributor.authorBonnett, C
dc.contributor.authorRosell, A Carnero
dc.contributor.authorCarollo, D
dc.contributor.authorKind, M Carrasco
dc.contributor.authorCastander, F J
dc.contributor.authorCawthon, R
dc.contributor.authorChang, C
dc.contributor.authorChildress, M
dc.contributor.authorDavis, T M
dc.contributor.authorDrlica-Wagner, A
dc.contributor.authorGatti, M
dc.contributor.authorGlazebrook, K
dc.contributor.authorGschwend, J
dc.contributor.authorHinton, S R
dc.contributor.authorHoormann, J K
dc.contributor.authorKim, A G
dc.contributor.authorKing, A
dc.contributor.authorKuehn, K
dc.contributor.authorLewis, G
dc.contributor.authorLidman, C
dc.contributor.authorLin, H
dc.contributor.authorMacaulay, E
dc.contributor.authorMaia, M A G
dc.contributor.authorMartini, P
dc.contributor.authorMudd, D
dc.contributor.authorMöller, A
dc.contributor.authorNichol, R C
dc.contributor.authorOgando, R L C
dc.contributor.authorRollins, R P
dc.contributor.authorRoodman, A
dc.contributor.authorRoss, A J
dc.contributor.authorRozo, E
dc.contributor.authorRykoff, E S
dc.contributor.authorSamuroff, S
dc.contributor.authorSevilla-Noarbe, I
dc.contributor.authorSharp, R
dc.contributor.authorSommer, N E
dc.contributor.authorTucker, B E
dc.contributor.authorUddin, S A
dc.contributor.authorVarga, T N
dc.contributor.authorVielzeuf, P
dc.contributor.authorYuan, F
dc.contributor.authorZhang, B
dc.contributor.authorAbbott, T M C
dc.contributor.authorAbdalla, F B
dc.contributor.authorAllam, S
dc.contributor.authorAnnis, J
dc.contributor.authorBechtol, K
dc.contributor.authorBenoit-Lévy, A
dc.contributor.authorBertin, E
dc.contributor.authorBrooks, D
dc.contributor.authorBuckley-Geer, E
dc.contributor.authorBurke, D L
dc.contributor.authorBusha, M T
dc.contributor.authorCapozzi, D
dc.contributor.authorCarretero, J
dc.contributor.authorCrocce, M
dc.contributor.authorD’Andrea, C B
dc.contributor.authorda Costa, L N
dc.contributor.authorDePoy, D L
dc.contributor.authorDesai, S
dc.contributor.authorDiehl, H T
dc.contributor.authorDoel, P
dc.contributor.authorEifler, T F
dc.contributor.authorEstrada, J
dc.contributor.authorEvrard, A E
dc.contributor.authorFernandez, E
dc.contributor.authorFlaugher, B
dc.contributor.authorFosalba, P
dc.contributor.authorFrieman, J
dc.contributor.authorGarcía-Bellido, J
dc.contributor.authorGerdes, D W
dc.contributor.authorGiannantonio, T
dc.contributor.authorGoldstein, D A
dc.contributor.authorGruendl, R A
dc.contributor.authorGutierrez, G
dc.contributor.authorHonscheid, K
dc.contributor.authorJames, D J
dc.contributor.authorJarvis, M
dc.contributor.authorJeltema, T
dc.contributor.authorJohnson, M W G
dc.contributor.authorJohnson, M D
dc.date.accessioned2018-12-03T23:29:02Z
dc.date.available2018-12-03T23:29:02Z
dc.date.issued2018-07
dc.identifier.citationB Hoyle, D Gruen, G M Bernstein, M M Rau, J De Vicente, W G Hartley, E Gaztanaga, J DeRose, M A Troxel, C Davis, A Alarcon, N MacCrann, J Prat, C Sánchez, E Sheldon, R H Wechsler, J Asorey, M R Becker, C Bonnett, A Carnero Rosell, D Carollo, M Carrasco Kind, F J Castander, R Cawthon, C Chang, M Childress, T M Davis, A Drlica-Wagner, M Gatti, K Glazebrook, J Gschwend, S R Hinton, J K Hoormann, A G Kim, A King, K Kuehn, G Lewis, C Lidman, H Lin, E Macaulay, M A G Maia, P Martini, D Mudd, A Möller, R C Nichol, R L C Ogando, R P Rollins, A Roodman, A J Ross, E Rozo, E S Rykoff, S Samuroff, I Sevilla-Noarbe, R Sharp, N E Sommer, B E Tucker, S A Uddin, T N Varga, P Vielzeuf, F Yuan, B Zhang, T M C Abbott, F B Abdalla, S Allam, J Annis, K Bechtol, A Benoit-Lévy, E Bertin, D Brooks, E Buckley-Geer, D L Burke, M T Busha, D Capozzi, J Carretero, M Crocce, C B D’Andrea, L N da Costa, D L DePoy, S Desai, H T Diehl, P Doel, T F Eifler, J Estrada, A E Evrard, E Fernandez, B Flaugher, P Fosalba, J Frieman, J García-Bellido, D W Gerdes, T Giannantonio, D A Goldstein, R A Gruendl, G Gutierrez, K Honscheid, D J James, M Jarvis, T Jeltema, M W G Johnson, M D Johnson, D Kirk, E Krause, S Kuhlmann, N Kuropatkin, O Lahav, T S Li, M Lima, M March, J L Marshall, P Melchior, F Menanteau, R Miquel, B Nord, C R O’Neill, A A Plazas, A K Romer, M Sako, E Sanchez, B Santiago, V Scarpine, R Schindler, M Schubnell, M Smith, R C Smith, M Soares-Santos, F Sobreira, E Suchyta, M E C Swanson, G Tarle, D Thomas, D L Tucker, V Vikram, A R Walker, J Weller, W Wester, R C Wolf, B Yanny, J Zuntz, DES Collaboration; Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies, Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 1, 21 July 2018, Pages 592–610, https://doi.org/10.1093/mnras/sty957en_US
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.doi10.1093/mnras/sty957
dc.identifier.urihttp://hdl.handle.net/10150/631092
dc.description.abstractWe describe the derivation and validation of redshift distribution estimates and their uncertainties for the populations of galaxies used as weak-lensing sources in the Dark Energy Survey (DES) Year 1 cosmological analyses. The Bayesian Photometric Redshift (BPZ) code is used to assign galaxies to four redshift bins between z approximate to 0.2 and approximate to 1.3, and to produce initial estimates of the lensing-weighted redshift distributions n(PZ)(i)(z) proportional to d(n)(i)/dz for members of bin i. Accurate determination of cosmological parameters depends critically on knowledge of n(i), but is insensitive to bin assignments or redshift errors for individual galaxies. The cosmological analyses allow for shifts n(i)(z) = n(PZ)(i)(z - Delta z(i)) to correct the mean redshift of n(i)(z) for biases in n(PZ)(i). The Delta z(i) are constrained by comparison of independently estimated 30-band photometric redshifts of galaxies in the Cosmic Evolution Survey (COSMOS) field to BPZ estimates made from the DES griz fluxes, for a sample matched in fluxes, pre-seeing size, and lensing weight to the DES weak-lensing sources. In companion papers, the Delta z(i) of the three lowest redshift bins are further constrained by the angular clustering of the source galaxies around red galaxies with secure photometric redshifts at 0.15 < z < 0.9. This paper details the BPZ and COSMOS procedures, and demonstrates that the cosmological inference is insensitive to details of the n(i)(z) beyond the choice of Delta z(i). The clustering and COSMOS validation methods produce consistent estimates of Delta z(i) in the bins where both can be applied, with combined uncertainties of sigma(i)(Delta z) = 0.015, 0.013, 0.011, and 0.022 in the four bins. Repeating the photo-z procedure instead using the Directional Neighbourhood Fitting algorithm, or using the n(i)(z) estimated from the matched sample in COSMOS, yields no discernible difference in cosmological inferences.en_US
dc.description.sponsorshipNASA through Einstein Postdoctoral Fellowship by the Chandra X-ray Center [PF5-160138]; NASA [NAS8-03060]; U.S. Department of Energy; U.S. National Science Foundation; Ministry of Science and Education of Spain; Science and Technology Facilities Council of the United Kingdom; Higher Education Funding Council for England; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign; Kavli Institute of Cosmological Physics at the University of Chicago; Center for Cosmology and Astro-Particle Physics at the Ohio State University; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University; Financiadora de Estudos e Projetos; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Ministerio da Ciencia, Tecnologia e Inovacao; Deutsche Forschungsgemeinschaft; Argonne National Laboratory; University of California at Santa Cruz; University of Cambridge; Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid; University of Chicago; University College London; DES-Brazil Consortium; University of Edinburgh; Eidgenossische Technische Hochschule Zurich; Fermi National Accelerator Laboratory; University of Illinois at Urbana-Champaign; Institut de Ciencies de l'Espai (IEEC/CSIC); Institut de Fisica d'Altes Energies; Lawrence Berkeley National Laboratory; Ludwig-Maximilians Universitat Munchen; associated Excellence Cluster Universe; University of Michigan; National Optical Astronomy Observatory,; University of Nottingham; Ohio State University; University of Pennsylvania; University of Portsmouth; SLAC National Accelerator Laboratory; Stanford University; University of Sussex; Texas AM University; OzDES Membership Consortium; National Science Foundation [AST-1138766, AST-1536171]; MINECO [AYA2015-71825, ESP2015-88861, FPA2015-68048, SEV-2012-0234, SEV-2016-0597, MDM-2015-0509]; ERDF funds from the European Union; CERCA programme of the Generalitat de Catalunya; European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013); ERC [240672, 291329, 306478]; Australian Research Council Centre of Excellence for All-sky Astrophysics [CE110001020]; U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-07CH11359]; Very Large Telescope at the ESO Paranal Observatory [LP175.A-0839]en_US
dc.language.isoenen_US
dc.publisherOXFORD UNIV PRESSen_US
dc.relation.urlhttps://academic.oup.com/mnras/article/478/1/592/4975790en_US
dc.rights© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectmethods: data analysisen_US
dc.subjectcataloguesen_US
dc.subjectsurveysen_US
dc.titleDark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxiesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Physen_US
dc.identifier.journalMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleMonthly Notices of the Royal Astronomical Society
dc.source.volume478
dc.source.issue1
dc.source.beginpage592
dc.source.endpage610
refterms.dateFOA2018-12-03T23:29:03Z


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