2021ApJS..255...20A

Query : 2021ApJS..255...20A

2021ApJS..255...20A - Astrophys. J., Suppl. Ser., 255, 20-20 (2021/August-0)

The Dark Energy Survey data release 2.

ABBOTT T.M.C., ADAMOW 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., FERTE A., FLAUGHER B., FOSALBA P., FRIEDEL D., FRIEMAN J., GARCIA-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-CHINCHON 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., VILA-VERDE G. (The Linea Science Server)

Abstract (from CDS):

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.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Dark energy - Cosmology - Extragalactic astronomy - Surveys - Redshift surveys - Optical astronomy - Near infrared astronomy

VizieR on-line data: <CDS Catalogue: II/371>

Nomenclature: DES NNNNNNNNNN N=691483608 among (Nos 870245751-1700560366).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 * alf Eri Be* 01 37 42.84548 -57 14 12.3101 -0.36 0.30 0.46 0.49 0.60 B6Vpe 495 1
3 UCAC3 125-8171 * 03 32 32.8728703992 -27 51 48.339287532 18.74 18.0893 16.64   17.0383 ~ 40 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 * alf Col Be* 05 39 38.9410319 -34 04 26.794991 2.10 2.53 2.65 2.65 2.74 B9Ve 251 0
6 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
7 * alf Pav SB* 20 25 38.85705 -56 44 06.3230 1.03 1.791 1.918     B2IV 285 1
8 * alf Gru PM* 22 08 13.98473 -46 57 39.5078 1.11 1.58 1.71 1.75 1.83 B6V 311 0
9 * bet Gru LP? 22 42 40.05027 -46 53 04.4752 5.33 3.73 2.11 0.20 -1.57 M4.5III 209 1

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