The One-hundred-deg2 DECam Imaging in Narrowbands (ODIN): Survey Design and Science Goals
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Author
Lee, K.-S.Gawiser, E.
Park, C.
Yang, Y.
Valdes, F.
Lang, D.
Ramakrishnan, V.
Moon, B.
Firestone, N.
Appleby, S.
Artale, M.C.
Andrews, M.
Bauer, F.
Benda, B.
Broussard, A.
Chiang, Y.-K.
Ciardullo, R.
Dey, A.
Farooq, R.
Gronwall, C.
Guaita, L.
Huang, Y.
Hwang, H.S.
Im, S.H.
Jeong, W.-S.
Karthikeyan, S.
Kim, H.

Kim, S.
Kumar, A.
Nagaraj, G.R.
Nantais, J.
Padilla, N.
Park, J.
Pope, A.
Popescu, R.
Schlegel, D.
Seo, E.
Singh, A.
Song, H.
Troncoso, P.
Vivas, A.K.
Zabludoff, A.
Zenteno, A.
Affiliation
Steward Observatory, University of ArizonaIssue Date
2024-02-05
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Institute of PhysicsCitation
Kyoung-Soo Lee et al 2024 ApJ 962 36Journal
Astrophysical JournalRights
© 2024. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We describe the survey design and science goals for One-hundred-deg2 DECam Imaging in Narrowbands (ODIN), a NOIRLab survey using the Dark Energy Camera (DECam) to obtain deep (AB ∼ 25.7) narrowband images over an unprecedented area of sky. The three custom-built narrowband filters, N419, N501, and N673, have central wavelengths of 419, 501, and 673 nm and respective FWHM of 7.5, 7.6, and 10.0 nm, corresponding to Lyα at z = 2.4, 3.1, and 4.5 and cosmic times of 2.8, 2.1, and 1.4 Gyr, respectively. When combined with even deeper, public broadband data from the Hyper Suprime-Cam, DECam, and in the future, the Legacy Survey of Space and Time, the ODIN narrowband images will enable the selection of over 100,000 Lyα-emitting (LAE) galaxies at these epochs. ODIN-selected LAEs will identify protoclusters as galaxy overdensities, and the deep narrowband images enable detection of highly extended Lyα blobs (LABs). Primary science goals include measuring the clustering strength and dark matter halo connection of LAEs, LABs, and protoclusters, and their respective relationship to filaments in the cosmic web. The three epochs allow for the redshift evolution of these properties to be determined during the period known as Cosmic Noon, where star formation was at its peak. The narrowband filter wavelengths are designed to enable interloper rejection and further scientific studies by revealing [O ii] and [O iii] at z = 0.34, Lyα and He ii 1640 at z = 3.1, and Lyman continuum plus Lyα at z = 4.5. Ancillary science includes similar studies of the lower-redshift emission-line galaxy samples and investigations of nearby star-forming galaxies resolved into numerous [O iii] and [S ii] emitting regions. © 2024. The Author(s). Published by the American Astronomical Society.Note
Open access journalISSN
0004-637XVersion
Final Published Versionae974a485f413a2113503eed53cd6c53
10.3847/1538-4357/ad165e
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Except where otherwise noted, this item's license is described as © 2024. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.