Dark energy survey year 3 results: weak lensing shape catalogue

DES Collaboration; S. Avila; D. Bacon; D. Thomas

doi:10.1093/mnras/stab918

Dark energy survey year 3 results: weak lensing shape catalogue

DES Collaboration, S. Avila, D. Bacon, D. Thomas

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Abstract

We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg² of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline metacalibration, which builds and improves upon the pipeline used in the DES Year 1 analysis in several aspects. The DES Year 3 weak-lensing shape catalogue consists of 100 204 026 galaxies, measured in the riz bands, resulting in a weighted source number density of n_eff = 5.59 gal arcmin^-2 and corresponding shape noise σ_e = 0.261. We perform a battery of internal null tests on the catalogue, including tests on systematics related to the point spread function (PSF) modelling, spurious catalogue B-mode signals, catalogue contamination, and galaxy properties.

Original language	English
Pages (from-to)	4312-4336
Number of pages	25
Journal	Monthly Notices of the Royal Astronomical Society
Volume	504
Issue number	3
Early online date	5 Apr 2021
DOIs	https://doi.org/10.1093/mnras/stab918
Publication status	Published - 1 Jul 2021

Keywords

catalogues
cosmology: observations
gravitational lensing: weak
methods: data analysis
surveys
techniques: image processing

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10.1093/mnras/stab918

stab918
This article has been accepted for publication in MNRAS ©: 2021 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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@article{81b156d72d7f458b9e3d3c88fa4e5da4,

title = "Dark energy survey year 3 results: weak lensing shape catalogue",

abstract = "We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg2 of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline metacalibration, which builds and improves upon the pipeline used in the DES Year 1 analysis in several aspects. The DES Year 3 weak-lensing shape catalogue consists of 100 204 026 galaxies, measured in the riz bands, resulting in a weighted source number density of neff = 5.59 gal arcmin-2 and corresponding shape noise σe = 0.261. We perform a battery of internal null tests on the catalogue, including tests on systematics related to the point spread function (PSF) modelling, spurious catalogue B-mode signals, catalogue contamination, and galaxy properties. ",

keywords = "catalogues, cosmology: observations, gravitational lensing: weak, methods: data analysis, surveys, techniques: image processing",

author = "{DES Collaboration} and M. Gatti and E. Sheldon and A. Amon and M. Becker and M. Troxel and A. Choi and C. Doux and N. MacCrann and A. Navarro-Alsina and I. Harrison and D. Gruen and G. Bernstein and M. Jarvis and Secco, {L. F.} and A. Fert{\'e} and T. Shin and J. McCullough and Rollins, {R. P.} and R. Chen and C. Chang and S. Pandey and I. Tutusaus and J. Prat and J. Elvin-Poole and C. Sanchez and Plazas, {A. A.} and A. Roodman and J. Zuntz and Abbott, {T. M.C.} and M. Aguena and S. Allam and J. Annis and S. Avila and D. Bacon and E. Bertin and S. Bhargava and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Castander, {F. J.} and C. Conselice and M. Costanzi and M. Crocce and {Da Costa}, {L. N.} and Davis, {T. M.} and {De Vicente}, J. and B. Hoyle and D. Thomas",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2021",

month = jul,

day = "1",

doi = "10.1093/mnras/stab918",

language = "English",

volume = "504",

pages = "4312--4336",

journal = "Monthly Notices of the Royal Astronomical Society",

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publisher = "Oxford University Press",

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TY - JOUR

T1 - Dark energy survey year 3 results

T2 - weak lensing shape catalogue

AU - DES Collaboration

AU - Gatti, M.

AU - Sheldon, E.

AU - Amon, A.

AU - Becker, M.

AU - Troxel, M.

AU - Choi, A.

AU - Doux, C.

AU - MacCrann, N.

AU - Navarro-Alsina, A.

AU - Harrison, I.

AU - Gruen, D.

AU - Bernstein, G.

AU - Jarvis, M.

AU - Secco, L. F.

AU - Ferté, A.

AU - Shin, T.

AU - McCullough, J.

AU - Rollins, R. P.

AU - Chen, R.

AU - Chang, C.

AU - Pandey, S.

AU - Tutusaus, I.

AU - Prat, J.

AU - Elvin-Poole, J.

AU - Sanchez, C.

AU - Plazas, A. A.

AU - Roodman, A.

AU - Zuntz, J.

AU - Abbott, T. M.C.

AU - Aguena, M.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Bacon, D.

AU - Bertin, E.

AU - Bhargava, S.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - Conselice, C.

AU - Costanzi, M.

AU - Crocce, M.

AU - Da Costa, L. N.

AU - Davis, T. M.

AU - De Vicente, J.

AU - Hoyle, B.

AU - Thomas, D.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg2 of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline metacalibration, which builds and improves upon the pipeline used in the DES Year 1 analysis in several aspects. The DES Year 3 weak-lensing shape catalogue consists of 100 204 026 galaxies, measured in the riz bands, resulting in a weighted source number density of neff = 5.59 gal arcmin-2 and corresponding shape noise σe = 0.261. We perform a battery of internal null tests on the catalogue, including tests on systematics related to the point spread function (PSF) modelling, spurious catalogue B-mode signals, catalogue contamination, and galaxy properties.

AB - We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg2 of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline metacalibration, which builds and improves upon the pipeline used in the DES Year 1 analysis in several aspects. The DES Year 3 weak-lensing shape catalogue consists of 100 204 026 galaxies, measured in the riz bands, resulting in a weighted source number density of neff = 5.59 gal arcmin-2 and corresponding shape noise σe = 0.261. We perform a battery of internal null tests on the catalogue, including tests on systematics related to the point spread function (PSF) modelling, spurious catalogue B-mode signals, catalogue contamination, and galaxy properties.

KW - catalogues

KW - cosmology: observations

KW - gravitational lensing: weak

KW - methods: data analysis

KW - surveys

KW - techniques: image processing

UR - http://www.scopus.com/inward/record.url?scp=85107862154&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab918

DO - 10.1093/mnras/stab918

M3 - Article

AN - SCOPUS:85107862154

SN - 0035-8711

VL - 504

SP - 4312

EP - 4336

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Dark energy survey year 3 results: weak lensing shape catalogue

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Keywords

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