The Dark Energy Survey: Data Release 1


Journal Article

© 2018. The American Astronomical Society. All rights reserved. We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations. DES DR1 is based on optical/near-infrared imaging from 345 distinct nights (2013 August to 2016 February) by the Dark Energy Camera mounted on the 4 m Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile. We release data from the DES wide-area survey covering ∼5000 deg2 of the southern Galactic cap in five broad photometric bands, grizY. DES DR1 has a median delivered point-spread function of g = 1.12, r = 0.96, i = 0.88, z = 0.84, and Y = 0.″90 FWHM, a photometric precision of <1% in all bands, and an astrometric precision of 151 . The median co-added catalog depth for a 1.″95 diameter aperture at signal-to-noise ratio (S/N) = 10 is g = 24.33, r = 24.08, i = 23.44, z = 22.69, and Y = 21.44. DES DR1 includes nearly 400 million distinct astronomical objects detected in ∼10,000 co-add tiles of size 0.534 deg2 produced from ∼39,000 individual exposures. Benchmark galaxy and stellar samples contain ∼310 million and ∼80 million objects, respectively, following a basic object quality selection. These data are accessible through a range of interfaces, including query web clients, image cutout servers, jupyter notebooks, and an interactive co-add image visualization tool. DES DR1 constitutes the largest photometric data set to date at the achieved depth and photometric precision.

Full Text

Duke Authors

Cited Authors

  • Abbott, TMC; Abdalla, FB; Allam, S; Amara, A; Annis, J; Asorey, J; Avila, S; Ballester, O; Banerji, M; Barkhouse, W; Baruah, L; Baumer, M; Bechtol, K; Becker, MR; Benoit-Lévy, A; Bernstein, GM; Bertin, E; Blazek, J; Bocquet, S; Brooks, D; Brout, D; Buckley-Geer, E; Burke, DL; Busti, V; Campisano, R; Cardiel-Sas, L; Rosell, AC; Kind, MC; Carretero, J; Castander, FJ; Cawthon, R; Chang, C; Chen, X; Conselice, C; Costa, G; Crocce, M; Cunha, CE; D'Andrea, CB; Costa, LND; Das, R; Daues, G; Davis, TM; Davis, C; Vicente, JD; Depoy, DL; Derose, J; Desai, S; Diehl, HT; Dietrich, JP; Dodelson, S; Doel, P; Drlica-Wagner, A; Eifler, TF; Elliott, AE; Evrard, AE; Farahi, A; Neto, AF; Fernandez, E; Finley, DA; Flaugher, B; Foley, RJ; Fosalba, P; Friedel, DN; Frieman, J; Garcia-Bellido, J; Gaztanaga, E; Gerdes, DW; Giannantonio, T; Gill, MSS; Glazebrook, K; Goldstein, DA; Gower, M; Gruen, D; Gruendl, RA; Gschwend, J; Gupta, RR; Gutierrez, G; Hamilton, S; Hartley, WG; Hinton, SR; Hislop, JM; Hollowood, D; Honscheid, K; Hoyle, B; Huterer, D; Jain, B; James, DJ; Jeltema, T; Johnson, MWG; Johnson, MD; Kacprzak, T; Kent, S; Khullar, G; Klein, M; Kovacs, A; Koziol, AMG; Krause, E; Kremin, A; Kron, R; Kuehn, K

Published Date

  • September 1, 2018

Published In

Volume / Issue

  • 239 / 2

International Standard Serial Number (ISSN)

  • 0067-0049

Digital Object Identifier (DOI)

  • 10.3847/1538-4365/aae9f0

Citation Source

  • Scopus