@article{f52ad0ae143c4f1082475faacf270ad6,
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 F. Menanteau",
note = "Funding Information: 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. Publisher Copyright: {\textcopyright} 2018. The American Astronomical Society. All rights reserved.",
year = "2018",
month = apr,
doi = "10.3847/1538-4365/aab4f5",
language = "English (US)",
volume = "235",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "2",
}