JADES data release 4 – Paper i . Sample selection, observing strategy and redshifts of the complete spectroscopic sample
Year: 2026
Type: article
Abstract: ABSTRACT This paper accompanies Data Release 4 of the James Webb Space Telescope (JWST) Advanced Deep Extragalactic Survey, which presents the full NIRSpec spectroscopy of the survey. We provide spectra of 5190 targets across Great Observatories Origins Deep Survey (GOODS)-North and GOODS-South (including the Hubble Ultra Deep Field), observed with the low-dispersion ($R \approx 30$–300) prism and three medium-resolution ($R \approx 1000$) gratings spanning $0.8 \lt \lambda \lt 5.5~\mu$m; 2654 were also observed with the higher resolution ($R \approx 2700$) G395H grating. The tiered survey design obtained $\gtrsim 20$ h exposures for $\sim 700$ galaxies in the Deep and Ultra Deep tiers, and shallower observations ($\sim 1$–3 h per setting) of $\gt 4400$ galaxies in the Medium tiers. Targets were selected from photometric redshifts or colours, with priority given to rest-UV-selected galaxies at $z \gt 5.7$ and F444W-selected galaxies at $1.5 \lt z \lt 5.7$. We describe the full target selection and present spectroscopic redshifts and success rates. In total, we obtain robust redshifts for 3297 galaxies, including 396 at $z \gt 5.7$ and 2545 at $1.5 \lt z \lt 5.7$. To facilitate uniform analyses, we define ‘gold’ subsamples based on UV- and F444W-selection. Using the parent samples and redshift success rates, we construct rest-UV luminosity functions at $6 \lesssim z \lesssim 9$ from the Medium- and Deep-JWST tiers. Our number densities agree well with previous determinations from both photometric and spectroscopic samples, with modest interloper fractions confirming the reliability of photometric UV-bright galaxy selections at these redshifts.
Authors: Emma Curtis-Lake, Alex J Cameron, Andrew J Bunker, Jan Scholtz, Stefano Carniani, Eleonora Parlanti, Francesco D’Eugenio, Peter Jakobsen, Christopher N A Willmer, Santiago Arribas, William M Baker, Stéphane Charlot, Jacopo Chevallard, Chiara Circosta, Mirko Curti, Qiao Duan, Daniel J Eisenstein, Kevin Hainline, Zhiyuan Ji, Benjamin D Johnson, Gareth C Jones, Roberto Maiolino, Michael V Maseda, Michele Perna, Pablo G Pérez-González, Tim Rawle, Marcia Rieke, Pierluigi Rinaldi, Brant Robertson, Bruno Rodríguez Del Pino, Aayush Saxena, Irene Shivaei, Renske Smit, Sandro Tacchella, Hannah Übler, Giacomo Venturi, Christina C Williams, Chris Willott
Institutions: University of Hertfordshire, University of Oxford, University of Cambridge, Scuola Normale Superiore, University of Copenhagen, University of Arizona, Centro de Astrobiología, Centre National de la Recherche Scientifique, Institut d'Astrophysique de Paris, Sorbonne Université, Institut de Radioastronomie Millimétrique, European Southern Observatory, Center for Astrophysics Harvard & Smithsonian, University College London, University of Wisconsin–Madison, European Space Agency, European Space Astronomy Centre, Space Telescope Science Institute, University of California, Santa Cruz, Liverpool John Moores University, Max Planck Institute for Extraterrestrial Physics, NSF NOIRLab, Herzberg Institute of Astrophysics
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,046
Funders: Office of Global Criminal Justice, National Science Foundation, National Aeronautics and Space Administration, Entomological Society of America, University of Arizona, Villum Fonden, Research Manitoba, Systematics Association, MicroResearch, Communal Studies Association, Space Telescope Science Institute, UK Research and Innovation, European Commission, National Research Foundation, Danmarks Grundforskningsfond, Ministerio de Ciencia e Innovación, National Academy of Sciences, Science and Technology Facilities Council, European Regional Development Fund, Agencia Estatal de Investigación, H2020 European Research Council, Jungle Scout
Awards: G103270039, G1166668239, G1175115578, G1199145202, G121809054, G1245046120, G1325949514, G1338664626, G142925248, G1552628851, G1577046871, G1622782223, G1638893853, G1700342535, G1812695587, G1824424381, G1839900423, G1855990336, G2005369488, G2021250021, G210041235, G2144673021, G2262748287, G2272116534, G2309174360, G2469010403, Star formation in galaxies from the Epoch of Reionisation to the present day with JWST, G256731684, G2601397997, G2650114919, G2660088634, G2660406951, G279363373, Finding the most distant galaxies with NIRSpec guaranteed time on the James Webb Space Telescope, G300979063, G3152952368, G3228396264, G3340416472, G34346518, G3452655474, G3480869486, G3518538256, G3575130984, G3660973570, G3681454997, G3775832800, G3823816291, G4035329295, G4042783231, G410571670, G4161023950, G425668148, Cosmic Dawn Center (DAWN), G430777504, G4442677895, G4501905872, G451917667, G4526231891, G4641022211, G4714975165, G4805597997, G4863782507, G4915654406, G5080475149, G5180915604, G5195188938, G531848386, G5368796297, G5421974903, G5480708011, G5539308778, G5568641063, G5663025379, G5967599077, G6115201310, G6307073466, G7084143925, G7113369193, G7322907961, G7434936867, Star formation quenching and feedback in galaxies throughout the cosmic epochs, G7678768968, G7709247530, G7907587068, G7935691682, Dissecting galaxies at the cosmic dawn, G8537993047, G8631195605, G8920660035, G8931419319, G896202797, G897484643, G929308097, G971458805, G99296377
OpenAlex ID: W7162501142