Dark energy survey year 1 results: the photometric data set for cosmology

Dark Energy Survey Collaboration; D. Capozzi; C. B. D'Andrea; R. C. Nichol

doi:10.3847/1538-4365/aab4f5

Dark energy survey year 1 results: the photometric data set for cosmology

Dark Energy Survey Collaboration, D. Capozzi, C. B. D'Andrea, R. C. Nichol

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Abstract

We describe the creation, content, and validation of the Dark Energy Survey (DES) internal year-one cosmology data set, Y1A1 GOLD, in support of upcoming cosmological analyses. The Y1A1 GOLD data set is assembled from multiple epochs of DES imaging and consists of calibrated photometric zero-points, object catalogs, and ancillary data productsiXe.g., maps of survey depth and observing conditions, stariVgalaxy classification, and photometric redshift estimatesiXthat are necessary for accurate cosmological analyses. The Y1A1 GOLD widearea object catalog consists of ~137 million objects detected in co-added images covering ~1800 deg² in the DES grizY filters. The 10£m limiting magnitude for galaxies is g = 23.4, r = 23.2, i = 22.5, z = 21.8, and Y = 20.1. Photometric calibration of Y1A1 GOLD was performed by combining nightly zero-point solutions with stellar locus regression, and the absolute calibration accuracy is better than 2% over the survey area. DES Y1A1 GOLD is the largest photometric data set at the achieved depth to date, enabling precise measurements of cosmic acceleration at z≲1.

Original language	English
Article number	33
Journal	Astrophysical Journal, Supplement Series
Volume	235
Issue number	2
DOIs	https://doi.org/10.3847/1538-4365/aab4f5
Publication status	Published - 3 Apr 2018

Keywords

catalogs
cosmology: Observations
surveys
techniques: Image processing
techniques: Photometric
RCUK
STFC

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10.3847/1538-4365/aab4f5

Drlica-Wagner_2018_ApJS_235_33
A. Drlica-Wagner et al 2018 ApJS 235 33. Reproduced by permission of the AAS.
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Data availability statement for 'Dark energy survey year 1 results: the photometric data set for cosmology'.
Capozzi, D. (Creator), D'Andrea, C. B. (Creator) & Nichol, B. (Creator), IOP Publishing, 3 Apr 2018
Dataset

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@article{89b525d0a8d54782bb688cfab4a8da9b,

title = "Dark energy survey year 1 results: the photometric data set for cosmology",

abstract = "We describe the creation, content, and validation of the Dark Energy Survey (DES) internal year-one cosmology data set, Y1A1 GOLD, in support of upcoming cosmological analyses. The Y1A1 GOLD data set is assembled from multiple epochs of DES imaging and consists of calibrated photometric zero-points, object catalogs, and ancillary data productsiXe.g., maps of survey depth and observing conditions, stariVgalaxy classification, and photometric redshift estimatesiXthat are necessary for accurate cosmological analyses. The Y1A1 GOLD widearea object catalog consists of ~137 million objects detected in co-added images covering ~1800 deg2 in the DES grizY filters. The 10£m limiting magnitude for galaxies is g = 23.4, r = 23.2, i = 22.5, z = 21.8, and Y = 20.1. Photometric calibration of Y1A1 GOLD was performed by combining nightly zero-point solutions with stellar locus regression, and the absolute calibration accuracy is better than 2% over the survey area. DES Y1A1 GOLD is the largest photometric data set at the achieved depth to date, enabling precise measurements of cosmic acceleration at z≲1.",

keywords = "catalogs, cosmology: Observations, surveys, techniques: Image processing, techniques: Photometric, RCUK, STFC",

author = "{Dark Energy Survey Collaboration} and A. Drlica-Wagner and I. Sevilla-Noarbe and Rykoff, {E. S.} and Gruendl, {R. A.} and B. Yanny and Tucker, {D. L.} and B. Hoyle and Rosell, {A. Carnero} and Bernstein, {G. M.} and K. Bechtol and Becker, {M. R.} and A. Benoit-L{\'e}vy and E. Bertin and Kind, {M. Carrasco} and C. Davis and Vicente, {J. De} and Diehl, {H. T.} and D. Gruen and Hartley, {W. G.} and B. Leistedt and Li, {T. S.} and Marshall, {J. L.} and E. Neilsen and Rau, {M. M.} and E. Sheldon and J. Smith and Troxel, {M. A.} and S. Wyatt and Y. Zhang and Abbott, {T. M.C.} and Abdalla, {F. B.} and S. Allam and M. Banerji and D. Brooks and E. Buckley-Geer and Burke, {D. L.} and D. Capozzi and J. Carretero and Cunha, {C. E.} and D'Andrea, {C. B.} and Costa, {L. N.Da} and Depoy, {D. L.} and S. Desai and Dietrich, {J. P.} and P. Doel and Evrard, {A. E.} and Neto, {A. Fausti} and McMahon, {R. G.} and Nichol, {R. C.} and Smith, {R. C.}",

year = "2018",

month = apr,

day = "3",

doi = "10.3847/1538-4365/aab4f5",

language = "English",

volume = "235",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

publisher = "IOP Publishing",

number = "2",

}

TY - JOUR

T1 - Dark energy survey year 1 results

T2 - the photometric data set for cosmology

AU - Dark Energy Survey Collaboration

AU - Drlica-Wagner, A.

AU - Sevilla-Noarbe, I.

AU - Rykoff, E. S.

AU - Gruendl, R. A.

AU - Yanny, B.

AU - Tucker, D. L.

AU - Hoyle, B.

AU - Rosell, A. Carnero

AU - Bernstein, G. M.

AU - Bechtol, K.

AU - Becker, M. R.

AU - Benoit-Lévy, A.

AU - Bertin, E.

AU - Kind, M. Carrasco

AU - Davis, C.

AU - Vicente, J. De

AU - Diehl, H. T.

AU - Gruen, D.

AU - Hartley, W. G.

AU - Leistedt, B.

AU - Li, T. S.

AU - Marshall, J. L.

AU - Neilsen, E.

AU - Rau, M. M.

AU - Sheldon, E.

AU - Smith, J.

AU - Troxel, M. A.

AU - Wyatt, S.

AU - Zhang, Y.

AU - Abbott, T. M.C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Banerji, M.

AU - Brooks, D.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Capozzi, D.

AU - Carretero, J.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - Costa, L. N.Da

AU - Depoy, D. L.

AU - Desai, S.

AU - Dietrich, J. P.

AU - Doel, P.

AU - Evrard, A. E.

AU - Neto, A. Fausti

AU - McMahon, R. G.

AU - Nichol, R. C.

AU - Smith, R. C.

PY - 2018/4/3

Y1 - 2018/4/3

N2 - We describe the creation, content, and validation of the Dark Energy Survey (DES) internal year-one cosmology data set, Y1A1 GOLD, in support of upcoming cosmological analyses. The Y1A1 GOLD data set is assembled from multiple epochs of DES imaging and consists of calibrated photometric zero-points, object catalogs, and ancillary data productsiXe.g., maps of survey depth and observing conditions, stariVgalaxy classification, and photometric redshift estimatesiXthat are necessary for accurate cosmological analyses. The Y1A1 GOLD widearea object catalog consists of ~137 million objects detected in co-added images covering ~1800 deg2 in the DES grizY filters. The 10£m limiting magnitude for galaxies is g = 23.4, r = 23.2, i = 22.5, z = 21.8, and Y = 20.1. Photometric calibration of Y1A1 GOLD was performed by combining nightly zero-point solutions with stellar locus regression, and the absolute calibration accuracy is better than 2% over the survey area. DES Y1A1 GOLD is the largest photometric data set at the achieved depth to date, enabling precise measurements of cosmic acceleration at z≲1.

AB - We describe the creation, content, and validation of the Dark Energy Survey (DES) internal year-one cosmology data set, Y1A1 GOLD, in support of upcoming cosmological analyses. The Y1A1 GOLD data set is assembled from multiple epochs of DES imaging and consists of calibrated photometric zero-points, object catalogs, and ancillary data productsiXe.g., maps of survey depth and observing conditions, stariVgalaxy classification, and photometric redshift estimatesiXthat are necessary for accurate cosmological analyses. The Y1A1 GOLD widearea object catalog consists of ~137 million objects detected in co-added images covering ~1800 deg2 in the DES grizY filters. The 10£m limiting magnitude for galaxies is g = 23.4, r = 23.2, i = 22.5, z = 21.8, and Y = 20.1. Photometric calibration of Y1A1 GOLD was performed by combining nightly zero-point solutions with stellar locus regression, and the absolute calibration accuracy is better than 2% over the survey area. DES Y1A1 GOLD is the largest photometric data set at the achieved depth to date, enabling precise measurements of cosmic acceleration at z≲1.

KW - catalogs

KW - cosmology: Observations

KW - surveys

KW - techniques: Image processing

KW - techniques: Photometric

KW - RCUK

KW - STFC

UR - http://www.scopus.com/inward/record.url?scp=85047290894&partnerID=8YFLogxK

U2 - 10.3847/1538-4365/aab4f5

DO - 10.3847/1538-4365/aab4f5

M3 - Article

AN - SCOPUS:85047290894

SN - 0067-0049

VL - 235

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 33

ER -

Dark energy survey year 1 results: the photometric data set for cosmology

Abstract

Keywords

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Data availability statement for 'Dark energy survey year 1 results: the photometric data set for cosmology'.

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