The Dark Energy Survey Data Release 2

被引：178

作者：

Abbott, T. M. C. ^{[1
]}

Adamow, M. ^{[2
]}

Aguena, M. ^{[3
,4
]}

Allam, S. ^{[5
]}

Amon, A. ^{[6
]}

Annis, J. ^{[5
]}

Avila, S. ^{[7
]}

Bacon, D. ^{[8
]}

Banerji, M. ^{[9
,10
]}

Bechtol, K. ^{[11
]}

Becker, M. R. ^{[12
]}

Bernstein, G. M. ^{[13
]}

Bertin, E. ^{[14
,15
]}

Bhargava, S. ^{[16
]}

Bridle, S. L. ^{[17
]}

Brooks, D. ^{[18
]}

Burke, D. L. ^{[6
,19
]}

Rosell, A. Carnero ^{[4
,20
,21
]}

Kind, M. Carrasco ^{[2
,22
]}

Carretero, J. ^{[23
]}

Castander, F. J. ^{[24
,25
]}

Cawthon, R. ^{[11
]}

Chang, C. ^{[26
,27
]}

Choi, A. ^{[28
]}

Conselice, C. ^{[17
,29
]}

Costanzi, M. ^{[30
,31
]}

Crocce, M. ^{[24
,25
]}

da Costa, L. N. ^{[4
,32
]}

Davis, T. M. ^{[33
]}

De Vicente, J. ^{[34
]}

DeRose, J. ^{[35
,36
]}

Desai, S. ^{[37
]}

Diehl, H. T. ^{[5
]}

Dietrich, J. P. ^{[38
]}

Drlica-Wagner, A. ^{[5
,26
,27
]}

Eckert, K. ^{[13
]}

Elvin-Poole, J. ^{[28
,39
]}

Everett, S. ^{[36
]}

Evrard, A. E. ^{[40
,41
]}

Ferrero, I ^{[42
]}

Ferte, A. ^{[43
]}

Flaugher, B. ^{[5
]}

Fosalba, P. ^{[24
,25
]}

Friedel, D. ^{[2
]}

Frieman, J. ^{[5
,27
]}

Garcia-Bellido, J. ^{[7
]}

Gaztanaga, E. ^{[24
,25
]}

Gelman, L. ^{[2
]}

Gerdes, D. W. ^{[40
,41
]}

Giannantonio, T. ^{[9
]}

机构：

[1] NSFs Natl Opt Infrared Astron Res Lab, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile

[2] Natl Ctr Supercomp Applicat, Ctr Astrophys Surveys, 1205 West Clark St, Urbana, IL 61801 USA

[3] Univ Sao Paulo, Inst Fis, Dept Fis Matemat, CP 66318, BR-05314970 Sao Paulo, SP, Brazil

[4] Lab Interinst E Astron LIneA, Rua Gal Jos Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil

[5] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[6] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USA

[7] Univ Autonoma Madrid, Inst Fis Teor UAM CSIC, E-28049 Madrid, Spain

[8] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England

[9] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[10] Univ Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England

[11] Univ Wisconsin, Phys Dept, 2320 Chamberlin Hall,1150 Univ Ave, Madison, WI 53706 USA

[12] Argonne Natl Lab, 9700 South Cass Ave, Lemont, IL 60439 USA

[13] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[14] Inst Astrophys Paris, CNRS, UMR 7095, F-75014 Paris, France

[15] Sorbonne Univ, Inst Astrophys Paris, UPMC Univ Paris 06, UMR 7095, F-75014 Paris, France

[16] Univ Sussex, Dept Phys & Astron, Pevensey Bldg, Brighton BN1 9QH, E Sussex, England

[17] Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England

[18] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

[19] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[20] Inst Astrofis Canarias, E-38205 Tenerife, Spain

[21] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[22] Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA

[23] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Campus UAB, E-08193 Bellaterra, Barcelona, Spain

[24] Inst Estudis Espacials Catalunya IEEC, E-08034 Barcelona, Spain

[25] CSIC, Inst Space Sci ICE, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, Spain

[26] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[27] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[28] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[29] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[30] INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34143 Trieste, Italy

[31] Inst Fundamental Phys Universe, Via Beirut 2, I-34014 Trieste, Italy

[32] Observ Nacl, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil

[33] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

[34] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain

[35] Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA

[36] Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[37] IIT Hyderabad, Dept Phys, Kandi 502285, Telangana, India

[38] Ludwig Maximilians Univ Munchen, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany

[39] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[40] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[41] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[42] Univ Oslo, Inst Theoret Astrophys, POB 1029 Blindern, NO-0315 Oslo, Norway

[43] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[44] Stanford Univ, Dept Phys, 382 Via Pueblo Mall, Stanford, CA 94305 USA

[45] Univ Geneva, Dept Astron, Ch Ec 16, CH-1290 Versoix, Switzerland

[46] Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA

[47] Macquarie Univ, Australian Astron Opt, N Ryde, NSW 2113, Australia

[48] Lowell Observ, 1400 Mars Hill Rd, Flagstaff, AZ 86001 USA

[49] Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA

[50] Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2021年 / 255卷 / 02期

基金：

欧洲研究理事会; 美国国家科学基金会; 澳大利亚研究理事会; 美国国家航空航天局; 英国科学技术设施理事会;

关键词：

Dark energy; Cosmology; Extragalactic astronomy; Surveys; Redshift surveys; Optical astronomy; Near infrared astronomy; WHITE-DWARFS; STANDARD STARS; ANGULAR MASKS; IMAGES; PHOTOMETRY;

D O I：

10.3847/1538-4365/ac00b3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 5000 deg(2) 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 similar to 11 mmag, and a median internal astrometric precision of similar to 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 similar to 691 million distinct astronomical objects detected in 10,169 coadded image tiles of size 0.534 deg(2) 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.

引用

页数：29

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