The Dark Energy Survey Data Release 2

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. et al.
Bibliographical reference

The Astrophysical Journal Supplement Series

Advertised on:
8
2021
Number of authors
138
IAC number of authors
1
Citations
148
Refereed citations
123
Description
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.
Related projects
Galaxy proto-cluster
Molecular Gas and Dust in Galaxies Across Cosmic Time

Two of the most fundamental questions in astrophysics are the conversion of molecular gas into stars and how this physical process is a function of environments on all scales, ranging from planetary systems, stellar clusters, galaxies to galaxy clusters. The main goal of this internal project is to get insight into the formation and evolution of

Helmut
Dannerbauer