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

Giannini, G.; Alarcon, A.; Gatti, M.; Porredon, A.; Crocce, M.; Bernstein, G.M.; Cawthon, R.; Sánchez, C.; Doux, C.; Elvin-Poole, J.; Raveri, M.; Myles, J.; Lin, H.; Amon, A.; Allam, S.; Alves, O.; Andrade-Oliveira, F.; Baxter, E.; Bechtol, K.; Becker, M.R.; Blazek, J.; Camacho, H.; Campos, A.; Rosell, A.C.; Kind, M.C.; Choi, A.; Cordero, J.; de Vicente, J.; Derose, J.; Diehl, H.T.; Dodelson, S.; Drlica-Wagner, A.; Eckert, K.; Fang, X.; Farahi, A.; Fosalba, P.; Friedrich, O.; Gruen, D.; Gruendl, R.A.; Gschwend, J.; Harrison, I.; Hartley, W.G.; Huff, E.M.; Jarvis, M.; Krause, E.; Kuropatkin, N.; Lemos, P.; MacCrann, N.; McCullough, J.; Muir, J.; Pandey, S.; Prat, J.; Rodriguez-Monroy, M.; Ross, A.J.; Rykoff, E.S.; Samuroff, S.; Secco, L.F.; Sevilla-Noarbe, I.; Sheldon, E.; Troxel, M.A.; Tucker, D.L.; Weaverdyck, N.; Yanny, B.; Yin, B.; Zhang, Y.; Abbott, T.M.C.; Aguena, M.; Bacon, D.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D.L.; Carretero, J.; Castander, F.J.; Costanzi, M.; da Costa, L. N.; Pereira, M.E.S.; Desai, S.; Doel, P.; Ferrero, I.; Flaugher, B.; Friedel, D.; Frieman, J.; García-Bellido, J.; Gerdes, D.W.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; Honscheid, K.; James, D.J.; Kent, S.; Kuehn, K.; Lahav, O.; Lidman, C.; Lima, M.; Melchior, P.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Ogando, R.L.C.; Paterno, M.; Paz-Chinchón, F.; Pieres, A.; Malagón, A.A.P.; Roodman, A.; Sanchez, E.; Scarpine, V.; Smith, M.; Suchyta, E.; Swanson, M.E.C.; Tarle, G.; Thomas, D.; To, C.; Vincenzi, M.

Name:

stad2945.pdf

Size:

3.138Mb

Format:

PDF

Description:

Final Published Version

Download

Author

Giannini, G.
Alarcon, A.
Gatti, M.
Porredon, A.
Crocce, M.
Bernstein, G.M.
Cawthon, R.
Sánchez, C.
Doux, C.
Elvin-Poole, J.

Show all

Affiliation

Department of Astronomy/Steward Observatory, University of Arizona

Issue Date

2023-10-17

Citation

G Giannini, A Alarcon, M Gatti, A Porredon, M Crocce, G M Bernstein, R Cawthon, C Sánchez, C Doux, J Elvin-Poole, M Raveri, J Myles, H Lin, A Amon, S Allam, O Alves, F Andrade-Oliveira, E Baxter, K Bechtol, M R Becker, J Blazek, H Camacho, A Campos, A Carnero Rosell, M Carrasco Kind, A Choi, J Cordero, J De Vicente, J DeRose, H T Diehl, S Dodelson, A Drlica-Wagner, K Eckert, X Fang, A Farahi, P Fosalba, O Friedrich, D Gruen, R A Gruendl, J Gschwend, I Harrison, W G Hartley, E M Huff, M Jarvis, E Krause, N Kuropatkin, P Lemos, N MacCrann, J McCullough, J Muir, S Pandey, J Prat, M Rodriguez-Monroy, A J Ross, E S Rykoff, S Samuroff, L F Secco, I Sevilla-Noarbe, E Sheldon, M A Troxel, D L Tucker, N Weaverdyck, B Yanny, B Yin, Y Zhang, T M C Abbott, M Aguena, D Bacon, E Bertin, S Bocquet, D Brooks, D L Burke, J Carretero, F J Castander, M Costanzi, L N da Costa, M E S Pereira, S Desai, P Doel, I Ferrero, B Flaugher, D Friedel, J Frieman, J García-Bellido, D W Gerdes, G Gutierrez, S R Hinton, D L Hollowood, K Honscheid, D J James, S Kent, K Kuehn, O Lahav, C Lidman, M Lima, P Melchior, J Mena-Fernández, F Menanteau, R Miquel, R L C Ogando, M Paterno, F Paz-Chinchón, A Pieres, A A Plazas Malagón, A Roodman, E Sanchez, V Scarpine, M Smith, E Suchyta, M E C Swanson, G Tarle, D Thomas, C To, M Vincenzi, (DES Collaboration), 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, Monthly Notices of the Royal Astronomical Society, Volume 527, Issue 2, January 2024, Pages 2010–2036, https://doi.org/10.1093/mnras/stad2945

Journal

Monthly Notices of the Royal Astronomical Society

Rights

© 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).

Collection Information

This 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.

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. We obtain = 0.81 ± 0.04, which implies a ∼0.4σ shift in the

Note

Open access article

ISSN

0035-8711

DOI

10.1093/mnras/stad2945

Version

Final Published Version

Collections

UA Faculty Publications

© 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).

Except where otherwise noted, this item's license is described as © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).