Open Access
Overview of the DESI Legacy Imaging Surveys
David J. Schlegel,Jacqueline Beechert,Kaylan J. Burleigh,Arjun Dey,Joseph R. Findlay,David Herrera,Stéphanie Juneau,Martin Landriau,Dustin Lang,Aaron M. Meisner,John Moustakas,Adam D. Myers,Edward F. Schlafly,F. Valdes,Benjamin A. Weaver,Jinyi Yang,Christophe Yèche +16 more
- Vol. 233
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TLDR
The DESI Legacy Imaging Surveys (http://legacysurvey.org/) project is 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.Abstract:
Author(s): Huang, L; Dey, A; Schlegel, DJ; Lang, D; Blum, R; Burleigh, K; Fan, X; Findlay, JR; Finkbeiner, D; Herrera, D; Juneau, S; Landriau, M; Levi, M; McGreer, I; Meisner, A; Myers, AD; Moustakas, J; Nugent, P; Patej, A; Schlafly, EF; Walker, AR; Valdes, F; Weaver, BA; Yeche, C; Zou, H; Zhou, X; Abareshi, B; Abbott, TMC; Abolfathi, B; Aguilera, C; Alam, S; Allen, L; Alvarez, A; Annis, J; Ansarinejad, B; Aubert, M; Beechert, J; Bell, EF; Benzvi, SY; Beutler, F; Bielby, RM; Bolton, AS; Briceno, C; Buckley-Geer, EJ; Butler, K; Calamida, A; Carlberg, RG; Carter, P; Casas, R; Castander, FJ; Choi, Y; Comparat, J; Cukanovaite, E; Delubac, T; Devries, K; Dey, S; Dhungana, G; Dickinson, M; Ding, Z; Donaldson, JB; Duan, Y; Duckworth, CJ; Eftekharzadeh, S; Eisenstein, DJ; Etourneau, T; Fagrelius, PA; Farihi, J; Fitzpatrick, M; Font-Ribera, A; Fulmer, L; Gansicke, BT; Gaztanaga, E; George, K; Gerdes, DW; A Gontcho, SG; Gorgoni, C; Green, G; Guy, J; Harmer, D; Hernandez, M; Honscheid, K; Huang, LW; James, DJ; Jannuzi, BT; Jiang, L | Abstract: © 2019. The American Astronomical Society. All rights reserved.. 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.read more
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Journal ArticleDOI
The Zwicky Transient Facility Census of the Local Universe I: Systematic search for Calcium rich gap transients reveal three related spectroscopic sub-classes
Kaushik De,Mansi M. Kasliwal,Anastasios Tzanidakis,U. Christoffer Fremling,Scott M. Adams,Igor Andreoni,Ashot Bagdasaryan,Eric C. Bellm,Lars Bildsten,Chris Cannella,David O. Cook,Alexandre Delacroix,Andrew J. Drake,Dmitry A. Duev,Alison Dugas,Sara Frederick,Avishay Gal-Yam,Daniel A. Goldstein,V. Zach Golkhou,Matthew J. Graham,David Hale,M. Hankins,George Helou,Anna Y. Q. Ho,I. Irani,Jacob Jencson,Stephen Kaye,Shrinivas R. Kulkarni,Thomas Kupfer,Russ R. Laher,Robin Leadbeater,Ragnhild Lunnan,Frank J. Masci,Adam A. Miller,James D. Neill,Eran O. Ofek,Daniel A. Perley,Abigail Polin,Thomas A. Prince,Eliot Quataert,Daniel J. Reiley,Reed Riddle,Ben Rusholme,Yashvi Sharma,David L. Shupe,Jesper Sollerman,Leonardo Tartaglia,Richard Walters,Lin Yan,Yuhan Yao +49 more
TL;DR: In this paper, the authors used the Zwicky Transient Facility alert stream (ZTF) to detect Calcium-rich gap transients in the Census of the Local Universe (CLU) catalog.
Journal ArticleDOI
Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys
Journal ArticleDOI
The Atacama Cosmology Telescope: A Catalog of > 4000 Sunyaev-Zel'dovich Galaxy Clusters
Matt Hilton,C. Sifon,Sigurd Naess,M. Madhavacheril,Masamune Oguri,E. Rozo,E. S. Rykoff,T. M. C. Abbott,S. Adhikari,Michel Aguena,Simone Aiola,S. Allam,S. Amodeo,Alexandra Amon,J. Annis,Behzad Ansarinejad,C. Aros-Bunster,J. E. Austermann,Salcedo Romero de Ávila,David Bacon,Nick Battaglia,J. A. Beall,D. T. Becker,Gary Bernstein,E. Bertin,Tanay Bhandarkar,Sunayana Bhargava,J. R. Bond,David J. Brooks,D. L. Burke,Erminia Calabrese,J. Carretero,Steve K. Choi,A. Choi,C. J. Conselice,L. N. da Costa,M. Costanzi,D. Crichton,Kevin T. Crowley,R. Dunner,E. V. Denison,M. J. Devlin,Simon Dicker,H. T. Diehl,J. P. Dietrich,P. Doel,Shannon M. Duff,Adriaan J. Duivenvoorden,Jo Dunkley,S. Everett,Simone Ferraro,I. Ferrero,Agnès Ferté,B. Flaugher,Josh Frieman,Patricio A. Gallardo,Juan Garcia-Bellido,Enrique Gaztanaga,D. W. Gerdes,Paul Giles,Joseph E. Golec,Megan Gralla,Sebastian Grandis,Daniel Gruen,Robert A. Gruendl,J. Gschwend,G. Gutierrez,Dongwon Han,W. G. Hartley,M. Hasselfield,J. C. Hill,Gene C. Hilton,Adam D. Hincks,Samuel Hinton,S-P. P. Ho,K. Honscheid,Ben Hoyle,J. Hubmayr,Kevin M. Huffenberger,John P. Hughes,Anton T. Jaelani,Bhuvnesh Jain,David J. James,Tesla E. Jeltema,Steve Kent,M. Carrasco Kind,K. Knowles,Brian J. Koopman,K. Kuehn,O. Lahav,Marcos Lima,Y-T. Lin,Martine Lokken,S. I. Loubser,N. MacCrann,M. A. G. Maia,Tobias A. Marriage,J. Martin,Jeff McMahon,Peter Melchior,Felipe Menanteau,Ramon Miquel,Hironao Miyatake,K. Moodley,Robert Morgan,Tony Mroczkowski,Federico Nati,Laura Newburgh,Michael D. Niemack,Atsushi J. Nishizawa,R. L. C. Ogando,J. Orlowski-Scherer,Lyman A. Page,Antonella Palmese,B. Partridge,F. Paz-Chinchón,Phumlani Phakathi,A. A. Plazas,N. C. Robertson,A. K. Romer,A. Carnero Rosell,Maria Salatino,E. J. Sanchez,Emmanuel Schaan,Alessandro Schillaci,Neelima Sehgal,S. Serrano,T. Shin,S. M. Simon,M. N. K. Smith,Marcelle Soares-Santos,David N. Spergel,Suzanne T. Staggs,Emilie R. Storer,E. Suchyta,M. E. C. Swanson,G. Tarle,Daniel B. Thomas,Chun-Hao To,Hy Trac,J. N. Ullom,L. R. Vale,J. Van Lanen,Eve M. Vavagiakis,J. De Vicente,R. D. Wilkinson,Edward J. Wollack,Zhilei Xu,Yanxi Zhang +148 more
TL;DR: In this article, a catalog of 4195 optically confirmed Sunyaev-Zel'dovich (SZ) selected galaxy clusters detected with signal-to-noise ratio > 4 in 13,211 deg$^2$ of sky surveyed by the Atacama Cosmology Telescope (ACT).
Journal ArticleDOI
Deblending and classifying astronomical sources with Mask R-CNN deep learning
Colin J. Burke,Colin J. Burke,P. Aleo,P. Aleo,Yu Ching Chen,Yu Ching Chen,Xin Liu,Xin Liu,John R. Peterson,G. H. Sembroski,Joshua Yao-Yu Lin +10 more
TL;DR: A new deep learning technique to detect, classify, and deblend sources in multiband astronomical images, and finds that clean deblends are handled robustly during object masking, even for significantly blended sources.
Journal ArticleDOI
HOLISMOKES - II. Identifying galaxy-scale strong gravitational lenses in Pan-STARRS using convolutional neural networks
R. Cañameras,S. Schuldt,S. Schuldt,Sherry H. Suyu,Sherry H. Suyu,Sherry H. Suyu,Stefan Taubenberger,Tim Meinhardt,Laura Leal-Taixé,C. Lemon,K. Rojas,E. Savary +11 more
TL;DR: In this paper, a systematic search for wide separation (with Einstein radius θ E ǫ≳ 1.5″), galaxy-scale strong lenses in the 30 000 deg2 of the Pan-STARRS 3π survey on the Northern sky is presented.
References
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TL;DR: The Sloan Digital Sky Survey (SDSS) as discussed by the authors provides the data to support detailed investigations of the distribution of luminous and non-luminous matter in the universe: a photometrically and astrometrically calibrated digital imaging survey of π sr above about Galactic latitude 30° in five broad optical bands to a depth of g' ~ 23 mag.
Journal ArticleDOI
The wide-field infrared survey explorer (wise): mission description and initial on-orbit performance
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