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

DES Collaboration

doi:10.3847/1538-4365/aab4f5

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

DES Collaboration

Workflow Systems

Research output: Contribution to journal › Review article › peer-review

200 Scopus citations

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
State	Published - Apr 2018

Bibliographical note

Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved.

Funding

This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.

Funders	Funder number
National Science Foundation
National Aeronautics and Space Administration

Keywords

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

Access to Document

10.3847/1538-4365/aab4f5

Cite this

@article{08931d3d76b548a282c4ba7feec9b598,

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",

author = "{DES 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 B. Flaugher and P. Fosalba and E. Suchyta",

year = "2018",

month = apr,

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

language = "English",

volume = "235",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

publisher = "American Astronomical Society",

number = "2",

}

TY - JOUR

T1 - Dark energy survey year 1 results

T2 - The photometric data set for cosmology

AU - DES 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 - Flaugher, B.

AU - Fosalba, P.

AU - Suchyta, E.

PY - 2018/4

Y1 - 2018/4

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

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 - Review 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

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this