Abstract This paper accompanies Data Release 4 of the JWST Deep Extragalactic Survey (JADES), which presents the full NIRSpec spectroscopy of the survey. We provide spectra of 5190 targets across GOODS-North and GOODS-South (including the Hubble Ultra Deep Field), observed with the low-dispersion (R ≈ 30–300) prism and three medium-resolution (R ≈ 1000) gratings spanning 0.8 λ 5.5 μm; 2654 were also observed with the higher-resolution (R ≈ 2700) G395H grating. The tiered survey design obtained ≳ 20 hr exposures for ~700 galaxies in the Deep and Ultra Deep tiers, and shallower observations (~1–3 hr per setting) of 4400 galaxies in the Medium tiers. Targets were selected from photometric redshifts or colours, with priority given to rest-UV-selected galaxies at z 5.7 and F444W-selected galaxies at 1.5 z 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 5.7 and 2545 at 1.5 z 5.7. To facilitate uniform analyses, we define ‘gold’ sub-samples based on UV- and F444W-selection. Using the parent samples and redshift success rates, we construct rest-UV luminosity functions at 6 ≲ z ≲ 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.
Curtis-Lake et al. (Wed,) studied this question.