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JADES Data Release 3 -- NIRSpec/MSA spectroscopy for 4,000 galaxies in the GOODS fields
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abstract
We present the third data release of JADES, the JWST Advanced Deep Extragalactic Survey, providing both imaging and spectroscopy in the two GOODS fields. Spectroscopy consists of medium-depth and deep NIRSpec/MSA spectra of 4,000 targets, covering the spectral range 0.6-5.3 $\mu$m and observed with both the low-dispersion prism (R=30-300) and all three medium-resolution gratings (R=500-1,500). We describe the observations, data reduction, sample selection, and target allocation. We measured 2,375 redshifts (2,053 from multiple emission lines); our targets span the range from z=0.5 up to z=13, including 404 at z>5. The data release includes 2-d and 1-d fully reduced spectra, with slit-loss corrections and background subtraction optimized for point sources. We also provide redshifts and S/N>5 emission-line flux catalogs for the prism and grating spectra, and concise guidelines on how to use these data products. Alongside spectroscopy, we are also publishing fully calibrated NIRCam imaging, which enables studying the JADES sample with the combined power of imaging and spectroscopy. Together, these data provide the largest statistical sample to date to characterize the properties of galaxy populations in the first billion years after the Big Bang.
Forward citations
Cited by 11 Pith papers
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Lyman-alpha haloes in the aftermath of reionisation
Lyα haloes around low-luminosity LAEs at z≥6 have exponential scale lengths ~3× smaller than at z~3 under matched intrinsic surface-brightness sensitivity, with stacks of non-detections showing no extended emission at high-z.
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The Fraction of Clumpy Galaxies in JADES Over $2<z<9$
The clumpy-galaxy fraction rises from ~20% at z>6.5 to ~80% at z~2.75 in a 9,121-galaxy JWST sample, higher than HST-based values because JWST detects fainter clumps.
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The Impact of Galaxy Overdensities and Ionized Bubbles on Ly$\alpha$ Emission at $z\sim7.0-8.5$
Strong Lyα emitters at z~7-8.5 are preferentially found in galaxy overdensities comparable in size to predicted ionized bubbles, with the EGS field showing evidence for an unusually large ionized sightline.
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BlackTHUNDER Reveals a Massive Filament around a Compact AGN at $z\simeq5.23$
GN-77652, a compact broad-line AGN at z=5.229, lies beside a 12 kpc multi-source filament at the same redshift whose coalescence will erase the compact AGN appearance within ~150–440 Myr.
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An (in)complete NIRSpec census of Balmer absorption in Type 1 AGN -- radiation-driven outflows in little red dots, quasars and variable stars
About 44% of little red dots have hydrogen-alpha absorption from outflowing gas, implying radiatively driven outflows rather than static atmospheres.
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The Evolutionary Pathway of Low-mass Supermassive Black Holes at Intermediate Redshift: Insights from the JADES Survey
Nine JWST AGNs at z=2-4 have undermassive black holes relative to their bulges, hinting at a galaxy-first growth pathway.
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Lonely Little Red Dots: Challenges to the AGN-nature of little red dots through their clustering and spectral energy distributions
Little red dots sit in lower-density environments than typical galaxies, and Bayesian model comparison favors non-AGN interpretations for most of them.
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The impact of medium-width bands on the selection, and subsequent luminosity function measurements, of high-z galaxies
Using the JADES Origins Field, the authors show that medium-band photometry modestly improves high-z galaxy selection completeness, while bluer broadband depth matters most for reducing contamination.
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Morphological Demographics of Galaxies at $z\sim 10-16$: Log-Normal Size Distribution and Exponential Profiles Consistent with the Disk Formation Scenario
Galaxies at z=10-16 have a log-normal size distribution with sigma 0.52, nearly uniform axis ratios, and exponential profiles, consistent with early disk formation.
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On the ages of the stellar populations of galaxies at $z=0.1$-7
A combined JWST/HST sample shows that most galaxies from z=0.1 to z=7 have mass-weighted ages younger than the age of the flat-ΛCDM universe, supporting galaxy age evolution.
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GNHeII J1236+6215: A He II $\lambda$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations
A JWST and Keck study reports a metal-poor, compact galaxy at z=2.98 with strong He II 1640 emission, possibly powered by pockets of Population III or very massive stars, and with ISM conditions that favor escaping Ly...
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