@article{465dae1b9ca940c5813f85ba68c1006f,
title = "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",
abstract = "We present an alternative calibration of the MagLim lens sample redshift distributions from the Dark Energy Survey (DES) first 3 yr of data (Y3). The new calibration is based on a combination of a self-organizing-map-based scheme and clustering redshifts to estimate redshift distributions and inherent uncertainties, which is expected to be more accurate than the original DES Y3 redshift calibration of the lens sample. We describe in detail the methodology, and validate it on simulations and discuss the main effects dominating our error budget. The new calibration is in fair agreement with the fiducial DES Y3 n(z) calibration, with only mild differences (<3σ) in the means and widths of the distributions. We study the impact of this new calibration on cosmological constraints, analysing DES Y3 galaxy clustering and galaxy-galaxy lensing measurements, assuming a Lambda cold dark matter cosmology.",
keywords = "dark energy, galaxies: distances and redshifts, gravitational lensing: weak",
author = "{DES Collaboration} and G. Giannini and A. Alarcon and M. Gatti and A. Porredon and M. Crocce and Bernstein, {G. M.} and R. Cawthon and C. S{\'a}nchez and C. Doux and J. Elvin-Poole and M. Raveri and J. Myles and H. Lin and A. Amon and S. Allam and O. Alves and F. Andrade-Oliveira and E. Baxter and K. Bechtol and Becker, {M. R.} and J. Blazek and H. Camacho and A. Campos and Rosell, {A. Carnero} and Kind, {M. Carrasco} and A. Choi and J. Cordero and {De Vicente}, J. and J. Derose and Diehl, {H. T.} and S. Dodelson and A. Drlica-Wagner and K. Eckert and X. Fang and A. Farahi and P. Fosalba and O. Friedrich and D. Gruen and Gruendl, {R. A.} and J. Gschwend and I. Harrison and Hartley, {W. G.} and Huff, {E. M.} and M. Jarvis and E. Krause and N. Kuropatkin and P. Lemos and N. MacCrann and J. McCullough and F. Menanteau",
note = "Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda\u00E7\u00E3o Carlos Chagas Filho de Amparo \u00E0 Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico and the Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Inova\u00E7\u00E3o, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci\u00EAncia e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS web site is www.sdss.org . The project leading to these results has received funding from \u2018la Caixa\u2019 Foundation (ID 100010434), under the fellowship LCF/BQ/DI17/11620053 and has received funding from the European Union\u2019s Horizon 2020 research and innovation programme under the Marie Sk\u0142odowska-Curie grant agreement No. 713673.",
year = "2024",
month = jan,
day = "1",
doi = "10.1093/mnras/stad2945",
language = "English (US)",
volume = "527",
pages = "2010--2036",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",
}