The Dark Energy Survey Data Release 2

By Des collaboration, T. Abbott, M. Adamów, M. Aguena, Sahar Allam, A. Amon, James Annis, S. Ávila, D. Bacon, M. Banerji and 125 more. Astrophysical Journal Supplement Series, 2021

176 citations recorded by the source corpus.

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 = 0.″90, 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 1.″95 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.

Subfields: Astronomy and Astrophysics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/0de77e63191388f36fff794f6ae8c1001a77fb7d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

  1. Will J. Percival
  2. D. Schneider
  3. L. Hernquist
  4. P. Hopkins
  5. Daniel J. Eisenstein
  6. Simon D. M. White
  7. Volker Springel
  8. C. Chuang

In Electrical and Electronic Engineering

  1. Carlos S. Frenk
  2. Adam D. Myers
  3. C. Rockosi
  4. D. M. Alexander
  5. Ray Sharples
  6. V. Gonzalez-Perez
  7. Francisco Prada
  8. Risa Wechsler

Citations in the corpus