| Autor: |
Katherine A. Suess, John R. Weaver, Sedona H. Price, Richard Pan, Bingjie Wang, Rachel Bezanson, Gabriel Brammer, Sam E. Cutler, Ivo Labbé, Joel Leja, Christina C. Williams, Katherine E. Whitaker, Hakim Atek, Pratika Dayal, Anna de Graaff, Robert Feldmann, Marijn Franx, Yoshinobu Fudamoto, Seiji Fujimoto, Lukas J. Furtak, Andy D. Goulding, Jenny E. Greene, Gourav Khullar, Vasily Kokorev, Mariska Kriek, Brian Lorenz, Danilo Marchesini, Michael V. Maseda, Jorryt Matthee, Tim B. Miller, Ikki Mitsuhashi, Lamiya A. Mowla, Adam Muzzin, Rohan P. Naidu, Themiya Nanayakkara, Erica J. Nelson, Pascal A. Oesch, David J. Setton, Heath Shipley, Renske Smit, Justin S. Spilker, Pieter van Dokkum, Adi Zitrin |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
The Astrophysical Journal, Vol 976, Iss 1, p 101 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1538-4357 |
| DOI: |
10.3847/1538-4357/ad75fe |
| Popis: |
In this paper, we describe the “Medium Bands, Mega Science” JWST Cycle 2 survey (JWST-GO-4111) and demonstrate the power of these data to reveal both the spatially integrated and spatially resolved properties of galaxies from the local Universe to the era of cosmic dawn. Executed in 2023 November, MegaScience obtained ∼30 arcmin ^2 of deep multiband NIRCam imaging centered on the z ∼ 0.3 A2744 cluster, including 11 medium-band filters and the two shortest-wavelength broadband filters, F070W and F090W. Together, MegaScience and the UNCOVER Cycle 1 treasury program provide a complete set of deep (∼28–30 mag _AB ) images in all NIRCam medium- and broadband filters. This unique data set allows us to precisely constrain photometric redshifts, map stellar populations and dust attenuation for large samples of distant galaxies, and examine the connection between galaxy structures and formation histories. MegaScience also includes ∼17 arcmin ^2 of NIRISS parallel imaging in two broadband and four medium-band filters from 0.9 to 4.8 μ m, expanding the footprint where robust spectral energy distribution (SED) fitting is possible. We provide example SEDs and multiband cutouts at a variety of redshifts, and use a catalog of JWST spectroscopic redshifts to show that MegaScience improves both the scatter and catastrophic outlier rate of photometric redshifts by factors of 2–3. Additionally, we demonstrate the spatially resolved science enabled by MegaScience by presenting maps of the [O iii ] line emission and continuum emission in three spectroscopically confirmed z > 6 galaxies. We show that line emission in reionization-era galaxies can be clumpy, extended, and spatially offset from continuum emission, implying that galaxy assembly histories are complex even at these early epochs. We publicly release fully reduced mosaics and photometric catalogs for both the NIRCam primary and NIRISS parallel fields ( http://jwst-uncover.github.io/megascience ). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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