JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample
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2025
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| author | Curtis-Lake, Emma Cameron, Alex J. Bunker, Andrew J. Scholtz, Jan Carniani, Stefano Parlanti, Eleonora D'Eugenio, Francesco Jakobsen, Peter Willmer, Christopher N. A. Arribas, Santiago Baker, William M. Charlot, Stéphane Chevallard, Jacopo Circosta, Chiara Curti, Mirko Eisenstein, Daniel J. Hainline, Kevin Ji, Zhiyuan Johnson, Benjamin D. Jones, Gareth C. Maiolino, Roberto Maseda, Michael V. Pérez-González, Pablo G. Rawle, Tim Rieke, Marcia Rinaldi, Pierluigi Robertson, Brant Del Pino, Bruno Rodrígez Saxena, Aayush Shivaei, Irene Smit, Renske Tacchella, Sandro Übler, Hannah Venturi, Giacomo Williams, Christina C. Willott, Chris Duan, Qiao |
| author_facet | Curtis-Lake, Emma Cameron, Alex J. Bunker, Andrew J. Scholtz, Jan Carniani, Stefano Parlanti, Eleonora D'Eugenio, Francesco Jakobsen, Peter Willmer, Christopher N. A. Arribas, Santiago Baker, William M. Charlot, Stéphane Chevallard, Jacopo Circosta, Chiara Curti, Mirko Eisenstein, Daniel J. Hainline, Kevin Ji, Zhiyuan Johnson, Benjamin D. Jones, Gareth C. Maiolino, Roberto Maseda, Michael V. Pérez-González, Pablo G. Rawle, Tim Rieke, Marcia Rinaldi, Pierluigi Robertson, Brant Del Pino, Bruno Rodrígez Saxena, Aayush Shivaei, Irene Smit, Renske Tacchella, Sandro Übler, Hannah Venturi, Giacomo Williams, Christina C. Willott, Chris Duan, Qiao |
| contents | 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 $\sim$ 30-300) prism and three medium-resolution (R $\sim$ 1000) gratings spanning 0.8 $< λ<$ 5.5 microns; 2654 were also observed with the higher-resolution (R $\sim$ 2700) G395H grating. The tiered survey design obtained more than 20 hr exposures for $\sim$ 700 galaxies in the Deep and Ultra Deep tiers, and shallower observations ($\sim$ 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 $6 \lesssim z \lesssim 9$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_01033 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample Curtis-Lake, Emma Cameron, Alex J. Bunker, Andrew J. Scholtz, Jan Carniani, Stefano Parlanti, Eleonora D'Eugenio, Francesco Jakobsen, Peter Willmer, Christopher N. A. Arribas, Santiago Baker, William M. Charlot, Stéphane Chevallard, Jacopo Circosta, Chiara Curti, Mirko Eisenstein, Daniel J. Hainline, Kevin Ji, Zhiyuan Johnson, Benjamin D. Jones, Gareth C. Maiolino, Roberto Maseda, Michael V. Pérez-González, Pablo G. Rawle, Tim Rieke, Marcia Rinaldi, Pierluigi Robertson, Brant Del Pino, Bruno Rodrígez Saxena, Aayush Shivaei, Irene Smit, Renske Tacchella, Sandro Übler, Hannah Venturi, Giacomo Williams, Christina C. Willott, Chris Duan, Qiao Astrophysics of Galaxies 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 $\sim$ 30-300) prism and three medium-resolution (R $\sim$ 1000) gratings spanning 0.8 $< λ<$ 5.5 microns; 2654 were also observed with the higher-resolution (R $\sim$ 2700) G395H grating. The tiered survey design obtained more than 20 hr exposures for $\sim$ 700 galaxies in the Deep and Ultra Deep tiers, and shallower observations ($\sim$ 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 $6 \lesssim z \lesssim 9$ 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. |
| title | JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2510.01033 |