JADES Data Release 4 -- Paper II: Data reduction, analysis and emission-line fluxes of the complete spectroscopic sample
Year: 2025
Type: preprint
Abstract: We present the fourth data release of JADES, the JWST Advanced Deep Extragalactic Survey, 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 5,190 targets, covering the spectral range $0.6\text{--}5.5$~\mum and observed with both the low-dispersion prism ($R=30\text{--}300$) and all three medium-resolution gratings ($R=500\text{--}1,500$). We describe the data reduction, analysis and description of the data products included in this data release. In total, we measured 3,297 robust redshifts out of 5,190 targets, spanning a redshift range from $z=0.5$ up to $z=14.2$, including 974 at $z>4$. This data release includes 1-d and 2-d 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 $S/N>5$ 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 Database, designed to enable quick selection and browsing of this data release. Altogether, these data provide the largest statistical sample to date to characterise the properties of galaxy populations across Cosmic time.
Source: arXiv (Cornell University)
Authors: Scholtz, J., Carniani, S., Parlanti, E., D'Eugenio, F., Curtis-Lake, E., Jakobsen, P., Bunker, A. J., Cameron, A. J., Arribas, S., Baker, W. M., Charlot, S., Chevellard, J., Circosta, C., Curti, M., Duan, Q., Eisenstein, D. J., Hainline, K., Ji, Z., Johnson, B. D., Jones, G. C., Kumari, N., Maiolino, R., Maseda, M. V., Perna, M., Pérez-González, P. G., Rawle, T., Rieke, M., Rinaldi, P., Robertson, B., Saxena, A., Shivaei, I., Silcock, M. S., Sun, Y., Del Pino, B. Rodríguez, Tacchella, S., Übler, H., Venturi, G., Williams, C. C., Willmer, C. N. A., Willott, C., Witstok, J.
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 of Wisconsin–Madison, European Space Agency, European Space Astronomy Centre, University of California, Santa Cruz, University College London, 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: green
OpenAlex ID: W7084446453
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