The Dark Energy Survey Data Release 2
The Dark Energy Survey Data Release 2
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DOI：
10.3847/1538-4365/ac00b3
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发表时间：
2021-01
期刊：
影响因子：
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通讯作者：
Des collaboration;T. Abbott;M. Adamów;M. Aguena;S. Allam;A. Amon;J. Annis;S. Ávila;D. Bacon;M. Banerji;K. Bechtol;M. Becker;G. Bernstein;E. Bertin;S. Bhargava;S. Bridle;D. Brooks;D. Burke;A. Rosell;M. Kind;J. Carretero;F. Castander;R. Cawthon;C. Chang;A. Choi;C. Conselice;M. Costanzi;M. Crocce;L. Costa;T. Davis;J. Vicente;J. DeRose;S. Desai;H. Diehl;J. Dietrich;A. Drlica-Wagner;K. Eckert;J. Elvin-Poole;S. Everett;A. Evrard;I. Ferrero;A. Fert'e;B. Flaugher;P. Fosalba;D. Friedel;J. Frieman;J. Garc'ia-Bellido;L. Gelman;D. Gerdes;T. Giannantonio;M. Gill;D. Gruen;R. Gruendl;J. Gschwend;G. Gutiérrez;W. Hartley;S. Hinton;D. Hollowood;K. Honscheid;D. Huterer;D. James;T. Jeltema;M. Johnson;S. Kent;R. Kron;K. Kuehn;N. Kuropatkin;O. Lahav;T. Li;C. Lidman;H. Lin;N. MacCrann;M. Maia;T. Manning;M. March;J. Marshall;P. Martini;Peter Melchior;F. Menanteau;R. Miquel;R. Morgan;J. Myles;E. Neilsen;R. Ogando;A. Palmese;F. Paz-Chinch'on;D. Petravick;A. Pieres;A. Plazas;C. Pond;M. Rodríguez-Monroy;A. Romer;A. Roodman;E. Rykoff;M. Sako;E. Sánchez;B. Santiago;S. Serrano;I. Sevilla-Noarbe;J. A. Smith;M. Smith;M. Soares-Santos;E. Suchyta;M. Swanson;G. Tarlé;D. Thomas;C. To;P. Tremblay;M. Troxel;D. Tucker;D. Turner;T. Varga;A. Walker;Risa Wechsler;J. Weller;W. Wester;R. Wilkinson;B. Yanny;Y. Zhang;R. Nikutta;M. Fitzpatrick;A. Jacques;A. Scott;K. Olsen;L. Huang;D. Herrera;S. Juneau;D. Nidever;B. Weaver;C. Adean;V. Correia;M. D. Freitas;F. Freitas;C. Singulani;G. Vila-Verde
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文献类型：
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作者：
Des collaboration;T. Abbott;M. Adamów;M. Aguena;S. Allam;A. Amon;J. Annis;S. Ávila;D. Bacon;M. Banerji;K. Bechtol;M. Becker;G. Bernstein;E. Bertin;S. Bhargava;S. Bridle;D. Brooks;D. Burke;A. Rosell;M. Kind;J. Carretero;F. Castander;R. Cawthon;C. Chang;A. Choi;C. Conselice;M. Costanzi;M. Crocce;L. Costa;T. Davis;J. Vicente;J. DeRose;S. Desai;H. Diehl;J. Dietrich;A. Drlica-Wagner;K. Eckert;J. Elvin-Poole;S. Everett;A. Evrard;I. Ferrero;A. Fert'e;B. Flaugher;P. Fosalba;D. Friedel;J. Frieman;J. Garc'ia-Bellido;L. Gelman;D. Gerdes;T. Giannantonio;M. Gill;D. Gruen;R. Gruendl;J. Gschwend;G. Gutiérrez;W. Hartley;S. Hinton;D. Hollowood;K. Honscheid;D. Huterer;D. James;T. Jeltema;M. Johnson;S. Kent;R. Kron;K. Kuehn;N. Kuropatkin;O. Lahav;T. Li;C. Lidman;H. Lin;N. MacCrann;M. Maia;T. Manning;M. March;J. Marshall;P. Martini;Peter Melchior;F. Menanteau;R. Miquel;R. Morgan;J. Myles;E. Neilsen;R. Ogando;A. Palmese;F. Paz-Chinch'on;D. Petravick;A. Pieres;A. Plazas;C. Pond;M. Rodríguez-Monroy;A. Romer;A. Roodman;E. Rykoff;M. Sako;E. Sánchez;B. Santiago;S. Serrano;I. Sevilla-Noarbe;J. A. Smith;M. Smith;M. Soares-Santos;E. Suchyta;M. Swanson;G. Tarlé;D. Thomas;C. To;P. Tremblay;M. Troxel;D. Tucker;D. Turner;T. Varga;A. Walker;Risa Wechsler;J. Weller;W. Wester;R. Wilkinson;B. Yanny;Y. Zhang;R. Nikutta;M. Fitzpatrick;A. Jacques;A. Scott;K. Olsen;L. Huang;D. Herrera;S. Juneau;D. Nidever;B. Weaver;C. Adean;V. Correia;M. D. Freitas;F. Freitas;C. Singulani;G. Vila-Verde
我们提出了第二次公开数据发布的暗能量调查，DES DR 2，基于光学/近红外成像的暗能量相机安装在4米布兰科望远镜在塞罗托洛洛美洲天文台在智利。DES DR 2包括减少单历元和coadded图像，来源目录coadded图像，以及相关的数据产品组装从6年的DES科学操作。该版本包括DES广域调查的数据，覆盖了银河系南部帽盖5000 deg 2的五个广泛的光度带，grizY。DES DR 2的点扩散函数FWHM中值为g = 1.11″，r = 0.95″，i = 0.88″，z = 0.83″，Y = 0.″90，相对于Gaia DR 2 G波段的光度均匀性标准偏差< 3 mmag，光度精度为1.11 mmag，内部天体测量精度中值为1.27 mas。在信噪比= 10时，直径为1.“95的孔径的中值共加目录深度为g = 24.7，r = 24.4，i = 23.8，z = 23.1，Y = 21.7 mag. DES DR 2包括在10，169个大小为0.534 deg 2的共加图像块中检测到的16.91亿个不同的天文物体，这些图像块由76个，217个单时期图像。经过基本的质量选择，基准星系和恒星样本分别包含5.43亿和1.45亿个物体。这些数据可以通过几个界面访问，包括交互式图像可视化工具，基于Web的查询客户端，图像剪切服务器和Quixyter笔记本电脑。DES DR 2构成了迄今为止最大的光度数据集，达到了深度和光度精度。
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.