TY - JOUR
T1 - Overview of the DESI Legacy Imaging Surveys
AU - Dark Energy Spectroscopic Instrument (DESI)
AU - Dey, Arjun
AU - Schlegel, David J.
AU - Lang, Dustin
AU - Blum, Robert
AU - Burleigh, Kaylan
AU - Fan, Xiaohui
AU - Findlay, Joseph R.
AU - Finkbeiner, Doug
AU - Herrera, David
AU - Juneau, Stephanie
AU - Landriau, Martin
AU - Levi, Michael
AU - McGreer, Ian
AU - Meisner, Aaron
AU - Myers, Adam D.
AU - Moustakas, John
AU - Nugent, Peter
AU - Patej, Anna
AU - Schlafly, Edward F.
AU - Walker, Alistair R.
AU - Valdes, Francisco
AU - Weaver, Benjamin A.
AU - Zou, Christophe Yeche Hu
AU - Zhou, Xu
AU - Abareshi, Behzad
AU - Abbott, T. M. C.
AU - Abolfathi, Bela
AU - Aguilera, C.
AU - Alam, Shadab
AU - Allen, Lori
AU - Alvarez, A.
AU - Annis, James
AU - Ansarinejad, Behzad
AU - Aubert, Marie
AU - Beechert, Jacqueline
AU - Bell, Eric F.
AU - BenZvi, Segev Y.
AU - Beutler, Florian
AU - Bielby, Richard M.
AU - Bolton, Adam S.
AU - Buckley-Geer, Cesar Briceno Elizabeth J.
AU - Butler, Karen
AU - Calamida, Annalisa
AU - Carlberg, Raymond G.
AU - Carter, Paul
AU - Casas, Ricard
AU - Huang, W.
AU - Robertson, A. N.
AU - Ross, Nicholas P.
AU - Summers, David L.
PY - 2019/4/9
Y1 - 2019/4/9
N2 - 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.
AB - 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.
UR - https://researchportal.port.ac.uk/portal/en/publications/overview-of-the-desi-legacy-imaging-surveys(b5cf7b4e-f924-4c20-865c-72bdefbd99d7).html
U2 - 10.3847/1538-3881/ab089d
DO - 10.3847/1538-3881/ab089d
M3 - Article
SN - 0004-6256
JO - Astronomical Journal
JF - Astronomical Journal
ER -