JADES Data Release 4 – Paper II. Data reduction, analysis, and emission-line fluxes of the complete spectroscopic sample
Year: 2026
Type: article
Abstract: ABSTRACT We present the fourth data release of the JWST Advanced Deep Extragalactic Survey (JADES), providing deep spectroscopic observations in the two GOODS fields. A companion paper presents the target selection, spectroscopic redshifts and success rates, and in this paper, we discuss the data reduction and present emission-line flux measurements. The spectroscopy in this work consists of medium-depth, deep, and ultradeep NIRSpec/MSA spectra of 5190 targets, covering the spectral range $0.6\text{-}5.5$ $\mu$m and observed with both the low-dispersion prism ($R=30\text{-}300$) and all three medium-resolution gratings ($R=500\text{-}1500$). We describe the data reduction, analysis and description of the data products included in this data release. In total, we measured 3297 robust redshifts out of 5190 targets, spanning a redshift range from $z=0.5$ up to $z=14.2$, including 974 at $z\gt 4$. This data release includes 1D and 2D fully reduced spectra with 3- and 5-pixel extractions, with slit-loss corrections and background subtraction optimized for point sources. Furthermore, we provide redshifts and SNR > 5 emission-line flux catalogues for the prism and grating spectra, as well as new guidelines to use these data products. Lastly, we are launching a new JADES online data base, designed to enable quick selection and browsing of this data release. Altogether, these data provide the largest statistical sample to date including both PRISM and medium grating spectra across full NIRSpec wavelength range to characterize the properties of galaxy populations across cosmic time.
Authors: J Scholtz, S Carniani, E Parlanti, F D’Eugenio, E Curtis-Lake, P Jakobsen, A J Bunker, A J Cameron, S Arribas, W M Baker, S Charlot, J Chevellard, C Circosta, M Curti, Q Duan, D J Eisenstein, K Hainline, Z Ji, B D Johnson, G C Jones, N Kumari, R Maiolino, M V Maseda, M Perna, P G Pérez-González, T Rawle, M Rieke, P Rinaldi, B Robertson, A Saxena, I Shivaei, M S Silcock, Y Sun, B Rodríguez Del Pino, S Tacchella, H Übler, G Venturi, C C Williams, C N A Willmer, C Willott, J Witstok
Institutions: University of Cambridge, Scuola Normale Superiore, University of Hertfordshire, University of Copenhagen, University of Oxford, 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 of Arizona, Space Telescope Science Institute, University College London, University of Wisconsin–Madison, European Space Agency, European Space Astronomy Centre, University of California, Santa Cruz, 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: National Science Foundation, National Aeronautics and Space Administration, Simpson Fund, Entomological Society of America, University of California, Santa Cruz, University of Arizona, Villum Fonden, Research Manitoba, Communal Studies Association, Space Telescope Science Institute, UK Research and Innovation, European Commission, National Research Foundation, Danmarks Grundforskningsfond, Ministerio de Ciencia e Innovación, Science and Technology Facilities Council, European Regional Development Fund, Agencia Estatal de Investigación, Department of Engineering Physics, University of Wisconsin-Madison, European Social Fund, H2020 European Research Council
Awards: G103270039, G1175115578, G121809054, G1245046120, G1325949514, G1338664626, G1622782223, G1638893853, G1700342535, G1812695587, G1839900423, G1855990336, G2005369488, G2021250021, G210041235, G2144673021, G2262748287, 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, G34346518, G3452655474, G3455393019, G3480869486, G3518538256, G3660973570, G3681454997, G3823816291, STFC Hertfordshire 2020 DTP, G4035329295, G4042783231, G410571670, G4161023950, G425668148, Cosmic Dawn Center (DAWN), G430777504, G434337789, G4442677895, G451917667, G4526231891, G4714975165, G4805597997, G4863782507, G4915654406, G5080475149, G5180915604, G5195188938, G531848386, G5368796297, G5421974903, G5459679339, G546199279, G5480708011, G5539308778, G5568641063, G5663025379, G59540827, G5967599077, G6115201310, G6178944395, G6218905885, G6307073466, G6402102940, G6464745819, G7084143925, G7113369193, G7322907961, G7434936867, Star formation quenching and feedback in galaxies throughout the cosmic epochs, G7678768968, G7709247530, G7935691682, G8537993047, G8631195605, MRI: Acquisition of a High Performance Computer for Computational Science at UC Santa Cruz, G8888022036, G8920660035, G8931419319, G896202797, G897484643, G929308097, G99296377
OpenAlex ID: W7161574553