Dark Energy Survey Year 1 results: Weak lensing shape catalogues

DES Collaboration

doi:10.1093/MNRAS/STY2219

Dark Energy Survey Year 1 results: Weak lensing shape catalogues

DES Collaboration

Astronomy

Research output: Contribution to journal › Article

38 Scopus citations

Abstract

We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg² with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses amaximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively.

Original language	English (US)
Pages (from-to)	1149-1182
Number of pages	34
Journal	Monthly Notices of the Royal Astronomical Society
Volume	481
Issue number	1
DOIs	https://doi.org/10.1093/MNRAS/STY2219
State	Published - Nov 1 2018

Keywords

Catalogues
Cosmology: observations
Gravitational lensing: weak
Methods: data analysis
Surveys
Techniques: image processing

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/MNRAS/STY2219

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DES Collaboration (2018). Dark Energy Survey Year 1 results: Weak lensing shape catalogues. Monthly Notices of the Royal Astronomical Society, 481(1), 1149-1182. https://doi.org/10.1093/MNRAS/STY2219

@article{bdbabc45050f4f84bf3527d65d8aebb5,

title = "Dark Energy Survey Year 1 results: Weak lensing shape catalogues",

abstract = "We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses amaximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively.",

keywords = "Catalogues, Cosmology: observations, Gravitational lensing: weak, Methods: data analysis, Surveys, Techniques: image processing",

author = "{DES Collaboration} and J. Zunt and E. Sheldon and S. Samuroff and Troxel, {M. A.} and M. Jarvis and N. MacCrann and D. Gruen and J. Prat and C. S{\'a}nchez and A. Choi and Bridle, {S. L.} and Bernstein, {G. M.} and S. Dodelson and A. Drlica-Wagner and Y. Fang and Gruendl, {R. A.} and B. Hoyle and Huff, {E. M.} and B. Jain and D. Kirk and T. Kacprzak and C. Krawiec and Plazas, {A. A.} and Rollins, {R. P.} and Rykoff, {E. S.} and I. Sevilla-Noarbe and B. Soergel and Varga, {T. N.} and Abbott, {T. M.C.} and Abdalla, {F. B.} and S. Allam and J. Annis and K. Bechtol and A. Benoit-L{\'e}vy and E. Bertin and E. Buckley-Geer and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Castander, {F. J.} and M. Crocce and Cunha, {C. E.} and D'Andrea, {C. B.} and {da Costa}, {L. N.} and C. Davis and S. Desai and Diehl, {H. T.} and Dietrich, {J. P.} and Eifler, {T. F.}",

year = "2018",

month = nov,

day = "1",

doi = "10.1093/MNRAS/STY2219",

language = "English (US)",

volume = "481",

pages = "1149--1182",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

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TY - JOUR

T1 - Dark Energy Survey Year 1 results

T2 - Weak lensing shape catalogues

AU - DES Collaboration

AU - Zunt, J.

AU - Sheldon, E.

AU - Samuroff, S.

AU - Troxel, M. A.

AU - Jarvis, M.

AU - MacCrann, N.

AU - Gruen, D.

AU - Prat, J.

AU - Sánchez, C.

AU - Choi, A.

AU - Bridle, S. L.

AU - Bernstein, G. M.

AU - Dodelson, S.

AU - Drlica-Wagner, A.

AU - Fang, Y.

AU - Gruendl, R. A.

AU - Hoyle, B.

AU - Huff, E. M.

AU - Jain, B.

AU - Kirk, D.

AU - Kacprzak, T.

AU - Krawiec, C.

AU - Plazas, A. A.

AU - Rollins, R. P.

AU - Rykoff, E. S.

AU - Sevilla-Noarbe, I.

AU - Soergel, B.

AU - Varga, T. N.

AU - Abbott, T. M.C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Annis, J.

AU - Bechtol, K.

AU - Benoit-Lévy, A.

AU - Bertin, E.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - Crocce, M.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - Davis, C.

AU - Desai, S.

AU - Diehl, H. T.

AU - Dietrich, J. P.

AU - Eifler, T. F.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses amaximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively.

AB - We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses amaximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively.

KW - Catalogues

KW - Cosmology: observations

KW - Gravitational lensing: weak

KW - Methods: data analysis

KW - Surveys

KW - Techniques: image processing

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U2 - 10.1093/MNRAS/STY2219

DO - 10.1093/MNRAS/STY2219

M3 - Article

AN - SCOPUS:85054240697

VL - 481

SP - 1149

EP - 1182

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -