Overview of the DESI Legacy Imaging Surveys
文献类型：期刊论文
| 作者 | Dey,Arjun60; Schlegel,David J.61; Lang,Dustin62,63,64; Blum,Robert60,65; Burleigh,Kaylan61; Fan,Xiaohui1; Findlay,Joseph R.2; Finkbeiner,Doug3; Herrera,David60; Juneau,Stéphanie60 |
| 刊名 | The Astronomical Journal
 |
| 出版日期 | 2019-04-09 |
| 卷号 | 157期号:5 |
| ISSN号 | 0004-6256 |
| 关键词 | catalogs surveys |
| DOI | 10.3847/1538-3881/ab089d |
| 英文摘要 | Abstract The DESI Legacy Imaging Surveys (http://legacysurvey.org/) are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing–Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image ≈14,000 deg2 of the extragalactic sky visible from the northern hemisphere in three optical bands (g, r, and z) using telescopes at the Kitt Peak National Observatory and the Cerro Tololo Inter-American Observatory. The combined survey footprint is split into two contiguous areas by the Galactic plane. The optical imaging is conducted using a unique strategy of dynamically adjusting the exposure times and pointing selection during observing that results in a survey of nearly uniform depth. In addition to calibrated images, the project is delivering a catalog, constructed by using a probabilistic inference-based approach to estimate source shapes and brightnesses. The catalog includes photometry from the grz optical bands and from four mid-infrared bands (at 3.4, 4.6, 12, and 22 μm) observed by the Wide-field Infrared Survey Explorer satellite during its full operational lifetime. The project plans two public data releases each year. All the software used to generate the catalogs is also released with the data. This paper provides an overview of the Legacy Surveys project. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-6256-157-5-AB089D |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/26000]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA 2.Department of Physics & Astronomy, University of Wyoming, 1000 E. University, Department 3905, Laramie, WY 8207, USA 3.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA 4.Department of Physics and Astronomy, Siena College, 515 Loudon Road, Loudonville, NY 12211, USA 5.Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile 6.IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France 7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 8.Department of Physics and Astronomy, University of California, Irvine, Irvine, CA 92697, USA 9.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK 10.Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USA |
| 推荐引用方式 GB/T 7714 | Dey,Arjun,Schlegel,David J.,Lang,Dustin,et al. Overview of the DESI Legacy Imaging Surveys[J]. The Astronomical Journal,2019,157(5). |
| APA | Dey,Arjun.,Schlegel,David J..,Lang,Dustin.,Blum,Robert.,Burleigh,Kaylan.,...&Zhou,Zhimin.(2019).Overview of the DESI Legacy Imaging Surveys.The Astronomical Journal,157(5). |
| MLA | Dey,Arjun,et al."Overview of the DESI Legacy Imaging Surveys".The Astronomical Journal 157.5(2019). |
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来源：国家天文台
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