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Overview of the DESI Legacy Imaging Surveys

Open access
Dey, Arjun, Schlegel, David J., Lang, Dustin, Blum, Robert, Burleigh, Kaylan, Fan, Xiaohui, Findlay, Joseph R., Finkbeiner, Doug, Herrera, David, Juneau, Stéphanie, Landriau, Martin, Levi, Michael, McGreer, Ian, Meisner, Aaron, Myers, Adam D., Moustakas, John, Nugent, Peter, Patej, Anna, Schlafly, Edward F., Walker, Alistair R., Valdes, Francisco, Weaver, Benjamin A., Yèche, Christophe, Zou, Hu, Zhou, Xu, Abareshi, Behzad, Abbott, T. M. C., Abolfathi, Bela, Aguilera, C., Alam, Shadab, Allen, Lori, Alvarez, A., Annis, James, Ansarinejad, Behzad, Aubert, Marie, Beechert, Jacqueline, Bell, Eric F., BenZvi, Segev Y., Beutler, Florian, Bielby, Richard M., Bolton, Adam S., Briceño, César, Buckley-Geer, Elizabeth J., Butler, Karen, Calamida, Annalisa, Carlberg, Raymond G., Carter, Paul, Casas, Ricard, Castander, Francisco J., Choi, Yumi, Comparat, Johan, Cukanovaite, Elena, Delubac, Timothée, DeVries, Kaitlin, Dey, Sharmila, Dhungana, Govinda, Dickinson, Mark, Ding, Zhejie, Donaldson, John B., Duan, Yutong, Duckworth, Christopher J., Eftekharzadeh, Sarah, Eisenstein, Daniel J., Etourneau, Thomas, Fagrelius, Parker A., Farihi, Jay, Fitzpatrick, Mike, Font-Ribera, Andreu, Fulmer, Leah, Gänsicke, Boris T., Gaztanaga, Enrique, George, Koshy, Gerdes, David W., A Gontcho, Satya Gontcho, Gorgoni, Claudio, Green, Gregory, Guy, Julien, Harmer, Diane, Hernandez, M., Honscheid, Klaus, Huang, Lijuan (Wendy), James, David J., Jannuzi, Buell T., Jiang, Linhua, Joyce, Richard, Karcher, Armin, Karkar, Sonia, Kehoe, Robert, Kneib, Jean-Paul,, Kueter-Young, Andrea, Lan, Ting-Wen, Lauer, Tod R., Guillou, Laurent Le, Van Suu, Auguste Le, Lee, Jae Hyeon, Lesser, Michael, Levasseur, Laurence Perreault, Li, Ting S., Mann, Justin L., Marshall, Robert, Martínez-Vázquez, C. E., Martini, Paul, du Mas des Bourboux, Hélion, McManus, Sean, Meier, Tobias Gabriel, Ménard, Brice, Metcalfe, Nigel, Muñoz-Gutiérrez, Andrea, Najita, Joan, Napier, Kevin, Narayan, Gautham, Newman, Jeffrey A., Nie, Jundan, Nord, Brian, Norman, Dara J., Olsen, Knut A. G., Paat, Anthony, Palanque-Delabrouille, Nathalie, Peng, Xiyan, Poppett, Claire L., Poremba, Megan R., Prakash, Abhishek, Rabinowitz, David, Raichoor, Anand, Rezaie, Mehdi, Robertson, A. N., Roe, Natalie A., Ross, Ashley J., Ross, Nicholas P., Rudnick, Gregory, Gaines, Sasha, Saha, Abhijit, Sánchez, F. Javier, Savary, Elodie, Schweiker, Heidi, Scott, Adam, Seo, Hee-Jong, Shan, Huanyuan, Silva, David R., Slepian, Zachary, Soto, Christian, Sprayberry, David, Staten, Ryan, Stillman, Coley M., Stupak, Robert J., Summers, David L., Tie, Suk Sien, Tirado, H., Vargas-Magaña, Mariana, Vivas, A. Katherina, Wechsler, Risa H., Williams, Doug, Yang, Jinyi, Yang, Qian, Yapici, Tolga, Zaritsky, Dennis, Zenteno, A., Zhang, Kai, Zhang, Tianmeng, Zhou, Rongpu, Zhou, Zhimin·2019·The Astronomical Journal

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 deg 2 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 μ m) 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.

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Authors
Dey, A., Schlegel, D. J., Lang, D., Blum, R., Burleigh, K., Fan, X., Findlay, J. R., Finkbeiner, D., Herrera, D., Juneau, S., Landriau, M., Levi, M., McGreer, I., Meisner, A., Myers, A. D., Moustakas, J., Nugent, P., Patej, A., Schlafly, E. F., Walker, A. R., Valdes, F., Weaver, B. A., Yèche, C., Zou, H., Zhou, X., Abareshi, B., Abbott, T. M. C., Abolfathi, B., Aguilera, C., Alam, S., Allen, L., Alvarez, A., Annis, J., Ansarinejad, B., Aubert, M., Beechert, J., Bell, E. F., BenZvi, S. Y., Beutler, F., Bielby, R. M., Bolton, A. S., Briceño, C., Buckley-Geer, E. J., Butler, K., Calamida, A., Carlberg, R. G., Carter, P., Casas, R., Castander, F. J., Choi, Y., Comparat, J., Cukanovaite, E., Delubac, T., DeVries, K., Dey, S., Dhungana, G., Dickinson, M., Ding, Z., Donaldson, J. B., Duan, Y., Duckworth, C. J., Eftekharzadeh, S., Eisenstein, D. J., Etourneau, T., Fagrelius, P. A., Farihi, J., Fitzpatrick, M., Font-Ribera, A., Fulmer, L., Gänsicke, B. T., Gaztanaga, E., George, K., Gerdes, D. W., A Gontcho, S. G., Gorgoni, C., Green, G., Guy, J., Harmer, D., Hernandez, M., Honscheid, K., Huang, L. (., James, D. J., Jannuzi, B. T., Jiang, L., Joyce, R., Karcher, A., Karkar, S., Kehoe, R., Kneib, J.-P., Kueter-Young, A., Lan, T.-W., Lauer, T. R., Guillou, L. L., Van Suu, A. L., Lee, J. H., Lesser, M., Levasseur, L. P., Li, T. S., Mann, J. L., Marshall, R., Martínez-Vázquez, C. E., Martini, P., du Mas des Bourboux, H., McManus, S., Meier, T. G., Ménard, B., Metcalfe, N., Muñoz-Gutiérrez, A., Najita, J., Napier, K., Narayan, G., Newman, J. A., Nie, J., Nord, B., Norman, D. J., Olsen, K. A. G., Paat, A., Palanque-Delabrouille, N., Peng, X., Poppett, C. L., Poremba, M. R., Prakash, A., Rabinowitz, D., Raichoor, A., Rezaie, M., Robertson, A. N., Roe, N. A., Ross, A. J., Ross, N. P., Rudnick, G., Gaines, S., Saha, A., Sánchez, F. J., Savary, E., Schweiker, H., Scott, A., Seo, H.-J., Shan, H., Silva, D. R., Slepian, Z., Soto, C., Sprayberry, D., Staten, R., Stillman, C. M., Stupak, R. J., Summers, D. L., Tie, S. S., Tirado, H., Vargas-Magaña, M., Vivas, A. K., Wechsler, R. H., Williams, D., Yang, J., Yang, Q., Yapici, T., Zaritsky, D., Zenteno, A., Zhang, K., Zhang, T., Zhou, R., & Zhou, Z.
Venue
The Astronomical Journal
Published
2019-04-09
Volume
157
Issue
5
Pages
168
ISSN
  • 0004-6256 (ISSN-L)
  • 1538-3881
OpenAlex
W2799047820
Cited by
1,865
References
9
FWCI
105.01
Type
journal article
Language
en
Open access
bronze

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Dey, A., Schlegel, D. J., Lang, D., Blum, R., Burleigh, K., Fan, X., Findlay, J. R., Finkbeiner, D., Herrera, D., Juneau, S., Landriau, M., Levi, M., McGreer, I., Meisner, A., Myers, A. D., Moustakas, J., Nugent, P., Patej, A., Schlafly, E. F., . . . Zhou, Z. (2019). Overview of the DESI Legacy Imaging Surveys. The Astronomical Journal. https://doi.org/10.3847/1538-3881/ab089d

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