JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS

Autor: Christina C. Williams, Sandro Tacchella, Michael V. Maseda, Brant E. Robertson, Benjamin D. Johnson, Chris J. Willott, Daniel J. Eisenstein, Christopher N. A. Willmer, Zhiyuan Ji, Kevin N. Hainline, Jakob M. Helton, Stacey Alberts, Stefi Baum, Rachana Bhatawdekar, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Anna de Graaff, Eiichi Egami, Marijn Franx, Nimisha Kumari, Roberto Maiolino, Erica J. Nelson, Marcia J. Rieke, Lester Sandles, Irene Shivaei, Charlotte Simmonds, Renske Smit, Katherine A. Suess, Fengwu Sun, Hannah Übler, Joris Witstok
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: The Astrophysical Journal Supplement Series, Vol 268, Iss 2, p 64 (2023)
Druh dokumentu: article
ISSN: 1538-4365
0067-0049
DOI: 10.3847/1538-4365/acf130
Popis: We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μ m medium-band filters (NIRCam F182M, F210M, F430M, F460M, F480M; and NIRISS F430M and F480M in parallel) over 15.6 arcmin ^2 in the Hubble Ultra Deep Field (UDF), thereby building on the deepest multiwavelength public data sets available anywhere on the sky. We describe our science goals, survey design, NIRCam and NIRISS image reduction methods, and describe our first data release of the science-ready mosaics, which reach 5 σ point-source limits (AB mag) of ∼29.3–29.4 in 2 μ m filters and ∼28.2–28.7 at 4 μ m. Our chosen filters create a JWST imaging survey in the UDF that enables novel analysis of a range of spectral features potentially across the redshift range of 0.3 < z < 20, including Paschen- α , H α +[N ii ], and [O iii ]+H β emission at high spatial resolution. We find that our JWST medium-band imaging efficiently identifies strong line emitters (medium-band colors >1 mag) across redshifts 1.5 < z < 9.3, most prominently H α +[N ii ] and [O iii ]+H β . We present our first data release including science-ready mosaics of each medium-band image available to the community, adding to the legacy value of past and future surveys in the UDF. This survey demonstrates the power of medium-band imaging with JWST, informing future extragalactic survey strategies using JWST observations.
Databáze: Directory of Open Access Journals
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