The University of Southampton
University of Southampton Institutional Repository

The Dark Energy Survey data release 2

The Dark Energy Survey data release 2
The Dark Energy Survey data release 2
We present the second public data release of the Dark Energy Survey, DES DR2, based on optical/near-infrared imaging by the Dark Energy Camera mounted on the 4 m Blanco telescope at Cerro Tololo Inter-American Observatory in Chile. DES DR2 consists of reduced single-epoch and coadded images, a source catalog derived from coadded images, and associated data products assembled from 6 yr of DES science operations. This release includes data from the DES wide-area survey covering ∼5000 deg2 of the southern Galactic cap in five broad photometric bands, grizY. DES DR2 has a median delivered point-spread function FWHM of g = 1.11'', r = 0.95'', i = 0.88'', z = 0.83'', and Y = 0farcs90, photometric uniformity with a standard deviation of < 3 mmag with respect to Gaia DR2 G band, a photometric accuracy of ∼11 mmag, and a median internal astrometric precision of ∼27 mas. The median coadded catalog depth for a 1farcs95 diameter aperture at signal-to-noise ratio = 10 is g = 24.7, r = 24.4, i = 23.8, z = 23.1, and Y = 21.7 mag. DES DR2 includes ∼691 million distinct astronomical objects detected in 10,169 coadded image tiles of size 0.534 deg2 produced from 76,217 single-epoch images. After a basic quality selection, benchmark galaxy and stellar samples contain 543 million and 145 million objects, respectively. These data are accessible through several interfaces, including interactive image visualization tools, web-based query clients, image cutout servers, and Jupyter notebooks. DES DR2 constitutes the largest photometric data set to date at the achieved depth and photometric precision.
0067-0049
Abbott, T.M.C.
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Adamów, M.
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Aguena, M.
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Allam, S.
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Amon, A.
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Annis, J.
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Avila, S.
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Bacon, D.
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Banerji, M.
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Bechtol, K.
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Becker, M.R.
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Bernstein, G.M.
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Bertin, E.
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Bhargava, S.
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Brooks, D.
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Burke, D.L.
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Carnero Rosell, A.
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Carrasco Kind, M.
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Carretero, J.
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Castander, F.J.
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Cawthon, R.
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Chang, C.
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Choi, A.
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Conselice, C.
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Costanzi, M.
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Crocce, M.
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Da Costa, L.N.
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Davis, T.M.
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De Vicente, J.
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Derose, J.
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Desai, S.
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Diehl, H.T.
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Dietrich, J.P.
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Drlica-Wagner, A.
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Eckert, K.
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Elvin-Poole, J.
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Everett, S.
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Evrard, A.E.
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Ferrero, I.
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Fosalba, P.
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Friedel, D.
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Frieman, J.
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García-Bellido, J.
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Gaztanaga, E.
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Gelman, L.
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Gerdes, D.W.
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Giannantonio, T.
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Gruen, D.
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Gschwend, J.
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Gutierrez, G.
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Hartley, W.G.
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Hinton, S.R.
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Hollowood, D.L.
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Honscheid, K.
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Huterer, D.
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James, D.J.
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Jeltema, T.
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Johnson, M.D.
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Kent, S.
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Kron, R.
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Kuehn, K.
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Kuropatkin, N.
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Lahav, O.
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Li, T.S.
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Lidman, C.
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Lin, H.
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Maccrann, N.
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Maia, M.A.G.
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Manning, T.A.
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Maloney, J.D.
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March, M.
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Marshall, J.L.
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Martini, P.
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Melchior, P.
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Menanteau, F.
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Miquel, R.
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Morgan, R.
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Myles, J.
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Neilsen, E.
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Ogando, R.L.C.
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Palmese, A.
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Paz-Chinchón, F.
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Petravick, D.
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Pieres, A.
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Plazas, A.A.
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Pond, C.
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Rodriguez-Monroy, M.
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Romer, A.K.
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Roodman, A.
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Rykoff, E.S.
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Sako, M.
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Sanchez, E.
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Santiago, B.
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Scarpine, V.
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Serrano, S.
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Sevilla-Noarbe, I.
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Smith, J.A.
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Smith, M.
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Soares-Santos, M.
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Suchyta, E.
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Swanson, M.E.C.
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Tarle, G.
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Thomas, D.
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To, C.
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Tremblay, P.E.
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Troxel, M.A.
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Tucker, D.L.
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Turner, D.J.
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Varga, T.N.
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Walker, A.R.
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Wechsler, R.H.
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Weller, J.
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Wester, W.
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Wilkinson, R.D.
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Yanny, B.
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Zhang, Y.
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Nikutta, R.
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Fitzpatrick, M.
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Jacques, A.
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Scott, A.
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Olsen, K.
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Huang, L.
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Herrera, D.
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Juneau, S.
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Nidever, D.
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Weaver, B.A.
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Adean, C.
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Correia, V.
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De Freitas, M.
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Singulani, C.
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Vila-Verde, G.
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Abbott, T.M.C.
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Adamów, M.
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Aguena, M.
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Allam, S.
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Avila, S.
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Bacon, D.
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Banerji, M.
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Bechtol, K.
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Becker, M.R.
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Bernstein, G.M.
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Brooks, D.
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Burke, D.L.
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Carnero Rosell, A.
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Choi, A.
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Conselice, C.
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Costanzi, M.
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Crocce, M.
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Da Costa, L.N.
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Davis, T.M.
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De Vicente, J.
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Derose, J.
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Desai, S.
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Diehl, H.T.
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Dietrich, J.P.
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Drlica-Wagner, A.
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Eckert, K.
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Elvin-Poole, J.
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Everett, S.
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Ferrero, I.
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Ferté, A.
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Flaugher, B.
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Fosalba, P.
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Friedel, D.
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Frieman, J.
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García-Bellido, J.
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Gaztanaga, E.
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Gelman, L.
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Gerdes, D.W.
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Giannantonio, T.
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Gill, M.S.S.
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Gruen, D.
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Gruendl, R.A.
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Gschwend, J.
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Gutierrez, G.
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Hartley, W.G.
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Hinton, S.R.
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Hollowood, D.L.
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Honscheid, K.
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Huterer, D.
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James, D.J.
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Jeltema, T.
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Johnson, M.D.
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Kent, S.
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Kron, R.
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Kuehn, K.
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Kuropatkin, N.
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Lahav, O.
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Li, T.S.
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Lidman, C.
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Lin, H.
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Maccrann, N.
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Maia, M.A.G.
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Manning, T.A.
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Maloney, J.D.
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March, M.
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Marshall, J.L.
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Martini, P.
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Melchior, P.
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Menanteau, F.
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Miquel, R.
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Morgan, R.
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Myles, J.
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Neilsen, E.
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Ogando, R.L.C.
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Palmese, A.
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Scarpine, V.
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Abbott, T.M.C., Adamów, M., Aguena, M., Allam, S., Amon, A., Annis, J., Avila, S., Bacon, D., Banerji, M., Bechtol, K., Becker, M.R., Bernstein, G.M., Bertin, E., Bhargava, S., Bridle, S.L., Brooks, D., Burke, D.L., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Castander, F.J., Cawthon, R., Chang, C., Choi, A., Conselice, C., Costanzi, M., Crocce, M., Da Costa, L.N., Davis, T.M., De Vicente, J., Derose, J., Desai, S., Diehl, H.T., Dietrich, J.P., Drlica-Wagner, A., Eckert, K., Elvin-Poole, J., Everett, S., Evrard, A.E., Ferrero, I., Ferté, A., Flaugher, B., Fosalba, P., Friedel, D., Frieman, J., García-Bellido, J., Gaztanaga, E., Gelman, L., Gerdes, D.W., Giannantonio, T., Gill, M.S.S., Gruen, D., Gruendl, R.A., Gschwend, J., Gutierrez, G., Hartley, W.G., Hinton, S.R., Hollowood, D.L., Honscheid, K., Huterer, D., James, D.J., Jeltema, T., Johnson, M.D., Kent, S., Kron, R., Kuehn, K., Kuropatkin, N., Lahav, O., Li, T.S., Lidman, C., Lin, H., Maccrann, N., Maia, M.A.G., Manning, T.A., Maloney, J.D., March, M., Marshall, J.L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Morgan, R., Myles, J., Neilsen, E., Ogando, R.L.C., Palmese, A., Paz-Chinchón, F., Petravick, D., Pieres, A., Plazas, A.A., Pond, C., Rodriguez-Monroy, M., Romer, A.K., Roodman, A., Rykoff, E.S., Sako, M., Sanchez, E., Santiago, B., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Smith, J.A., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M.E.C., Tarle, G., Thomas, D., To, C., Tremblay, P.E., Troxel, M.A., Tucker, D.L., Turner, D.J., Varga, T.N., Walker, A.R., Wechsler, R.H., Weller, J., Wester, W., Wilkinson, R.D., Yanny, B., Zhang, Y., Nikutta, R., Fitzpatrick, M., Jacques, A., Scott, A., Olsen, K., Huang, L., Herrera, D., Juneau, S., Nidever, D., Weaver, B.A., Adean, C., Correia, V., De Freitas, M., Freitas, F.N., Singulani, C. and Vila-Verde, G. (2021) The Dark Energy Survey data release 2. Astrophysical Journal, Supplement Series, 255. (doi:10.3847/1538-4365/ac00b3).

Record type: Article

Abstract

We present the second public data release of the Dark Energy Survey, DES DR2, based on optical/near-infrared imaging by the Dark Energy Camera mounted on the 4 m Blanco telescope at Cerro Tololo Inter-American Observatory in Chile. DES DR2 consists of reduced single-epoch and coadded images, a source catalog derived from coadded images, and associated data products assembled from 6 yr of DES science operations. This release includes data from the DES wide-area survey covering ∼5000 deg2 of the southern Galactic cap in five broad photometric bands, grizY. DES DR2 has a median delivered point-spread function FWHM of g = 1.11'', r = 0.95'', i = 0.88'', z = 0.83'', and Y = 0farcs90, photometric uniformity with a standard deviation of < 3 mmag with respect to Gaia DR2 G band, a photometric accuracy of ∼11 mmag, and a median internal astrometric precision of ∼27 mas. The median coadded catalog depth for a 1farcs95 diameter aperture at signal-to-noise ratio = 10 is g = 24.7, r = 24.4, i = 23.8, z = 23.1, and Y = 21.7 mag. DES DR2 includes ∼691 million distinct astronomical objects detected in 10,169 coadded image tiles of size 0.534 deg2 produced from 76,217 single-epoch images. After a basic quality selection, benchmark galaxy and stellar samples contain 543 million and 145 million objects, respectively. These data are accessible through several interfaces, including interactive image visualization tools, web-based query clients, image cutout servers, and Jupyter notebooks. DES DR2 constitutes the largest photometric data set to date at the achieved depth and photometric precision.

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Published date: 27 July 2021

Identifiers

Local EPrints ID: 500952
URI: http://eprints.soton.ac.uk/id/eprint/500952
ISSN: 0067-0049
PURE UUID: 94a60253-4c97-48a9-87c5-ff815e6e2fca
ORCID for M. Banerji: ORCID iD orcid.org/0000-0002-0639-5141

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Date deposited: 19 May 2025 17:08
Last modified: 20 May 2025 02:03

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Contributors

Author: T.M.C. Abbott
Author: M. Adamów
Author: M. Aguena
Author: S. Allam
Author: A. Amon
Author: J. Annis
Author: S. Avila
Author: D. Bacon
Author: M. Banerji ORCID iD
Author: K. Bechtol
Author: M.R. Becker
Author: G.M. Bernstein
Author: E. Bertin
Author: S. Bhargava
Author: S.L. Bridle
Author: D. Brooks
Author: D.L. Burke
Author: A. Carnero Rosell
Author: M. Carrasco Kind
Author: J. Carretero
Author: F.J. Castander
Author: R. Cawthon
Author: C. Chang
Author: A. Choi
Author: C. Conselice
Author: M. Costanzi
Author: M. Crocce
Author: L.N. Da Costa
Author: T.M. Davis
Author: J. De Vicente
Author: J. Derose
Author: S. Desai
Author: H.T. Diehl
Author: J.P. Dietrich
Author: A. Drlica-Wagner
Author: K. Eckert
Author: J. Elvin-Poole
Author: S. Everett
Author: A.E. Evrard
Author: I. Ferrero
Author: A. Ferté
Author: B. Flaugher
Author: P. Fosalba
Author: D. Friedel
Author: J. Frieman
Author: J. García-Bellido
Author: E. Gaztanaga
Author: L. Gelman
Author: D.W. Gerdes
Author: T. Giannantonio
Author: M.S.S. Gill
Author: D. Gruen
Author: R.A. Gruendl
Author: J. Gschwend
Author: G. Gutierrez
Author: W.G. Hartley
Author: S.R. Hinton
Author: D.L. Hollowood
Author: K. Honscheid
Author: D. Huterer
Author: D.J. James
Author: T. Jeltema
Author: M.D. Johnson
Author: S. Kent
Author: R. Kron
Author: K. Kuehn
Author: N. Kuropatkin
Author: O. Lahav
Author: T.S. Li
Author: C. Lidman
Author: H. Lin
Author: N. Maccrann
Author: M.A.G. Maia
Author: T.A. Manning
Author: J.D. Maloney
Author: M. March
Author: J.L. Marshall
Author: P. Martini
Author: P. Melchior
Author: F. Menanteau
Author: R. Miquel
Author: R. Morgan
Author: J. Myles
Author: E. Neilsen
Author: R.L.C. Ogando
Author: A. Palmese
Author: F. Paz-Chinchón
Author: D. Petravick
Author: A. Pieres
Author: A.A. Plazas
Author: C. Pond
Author: M. Rodriguez-Monroy
Author: A.K. Romer
Author: A. Roodman
Author: E.S. Rykoff
Author: M. Sako
Author: E. Sanchez
Author: B. Santiago
Author: V. Scarpine
Author: S. Serrano
Author: I. Sevilla-Noarbe
Author: J.A. Smith
Author: M. Smith
Author: M. Soares-Santos
Author: E. Suchyta
Author: M.E.C. Swanson
Author: G. Tarle
Author: D. Thomas
Author: C. To
Author: P.E. Tremblay
Author: M.A. Troxel
Author: D.L. Tucker
Author: D.J. Turner
Author: T.N. Varga
Author: A.R. Walker
Author: R.H. Wechsler
Author: J. Weller
Author: W. Wester
Author: R.D. Wilkinson
Author: B. Yanny
Author: Y. Zhang
Author: R. Nikutta
Author: M. Fitzpatrick
Author: A. Jacques
Author: A. Scott
Author: K. Olsen
Author: L. Huang
Author: D. Herrera
Author: S. Juneau
Author: D. Nidever
Author: B.A. Weaver
Author: C. Adean
Author: V. Correia
Author: M. De Freitas
Author: F.N. Freitas
Author: C. Singulani
Author: G. Vila-Verde

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