{
  "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.",
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  "affiliations": [
    "Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge CB3 0HE ,",
    "Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA ,",
    "Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa ,",
    "Centre for Astrophysics Research, Department of Physics, Astronomy and Mathematics, University of Hertfordshire , Hatfield AL10 9AB ,",
    "Cosmic Dawn Center (DAWN) , Rådmandsgade 64, 2200 København, Copenhagen ,",
    "Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen ,",
    "University of Oxford, Department of Physics, Denys Wilkinson Building , Keble Road, Oxford OX1 3RH ,",
    "Centro de Astrobiología (CAB) , CSIC-INTA, Cra. de Ajalvir Km. 4, E-28850 Torrejón de Ardoz, Madrid ,",
    "DARK, Niels Bohr Institute, University of Copenhagen , Jagtvej 155A, DK-2200 Copenhagen ,",
    "Sorbonne Université, CNRS , UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, F-75014 Paris ,",
    "Institut de Radioastronomie Millimétrique (IRAM) , 300 Rue de la Piscine, F-38400 Saint-Martin-d’Hères ,",
    "European Southern Observatory , Karl-Schwarzschild-Strasse 2, D-85748 Garching ,",
    "Center for Astrophysics | Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138 ,",
    "Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721 ,",
    "AURA for European Space Agency, Space Telescope Science Institute , 3700 San Martin Drive. Baltimore, MD 21210 ,",
    "Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT ,",
    "Department of Astronomy, University of Wisconsin-Madison , 475 N. Charter St., Madison, WI 53706 ,",
    "European Space Agency (ESA), European Space Astronomy Centre (ESAC), Camino Bajo del Castillo s/n , E-28692 Villafranca del Castillo, Madrid ,",
    "Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218 ,",
    "Department of Astronomy and Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 ,",
    "Max-Planck-Institut für extraterrestrische Physik (MPE) , Gießenbachstraße 1, D-85748 Garching ,",
    "NSF National Optical-Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719 ,",
    "NRC Herzberg , 5071 West Saanich Rd, Victoria, BC V9E 2E7 ,"
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      "name": "Michael V Maseda",
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      "name": "Michele Perna",
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      "name": "Pablo G. Pérez‐González",
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      "name": "Tim Rawle",
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      "name": "Marcia J. Rieke",
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      "name": "P Rinaldi"
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      "name": "Irene Shivaei",
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      "name": "Maddie S. Silcock",
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      "name": "Y Sun",
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      "name": "Bruno Rodríguez Del Pino",
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  "published": "2026-05-16",
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  "title": "JADES Data Release 4 – Paper II. Data reduction, analysis, and emission-line fluxes of the complete spectroscopic sample",
  "title_text": "JADES Data Release 4 – Paper II. Data reduction, analysis, and emission-line fluxes of the complete spectroscopic sample",
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