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| Format: | Preprint |
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2026
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| Online Access: | https://arxiv.org/abs/2603.13493 |
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| _version_ | 1866909034009853952 |
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| author | Lee, Lilian L. Schreiber, Natascha M. Förster Fujimoto, Seiji Faisst, Andreas L. Herrera-Camus, Rodrigo Genzel, Reinhard Tacconi, Linda J. Lutz, Dieter Renzini, Alvio Sanders, Ryan Wisnioski, Emily Wuyts, Stijn Parlanti, Eleonora Jones, Gareth Übler, Hannah Liu, Daizhong Chen, Jianhang Davies, Ric I. Tozzi, Giulia Burkert, Andreas Price, Sedona H. Aravena, Manuel Boquien, Médéric Béthermin, Matthieu da Cunha, Elisabete Davies, Rebecca L. De Looze, Ilse Dessauges-Zavadsky, Miroslava Ferrara, Andrea Fisher, Deanne B. Gillman, Steven Ginolfi, Michele Ibar, Edo Koekemoer, Anton M. Molina, Juan Naab, Thorsten Relaño, Mónica Riechers, Dominik A. Sanders, David B. Spilker, Justin S. Vallini, Livia Zamorani, Giovanni Nanni, Ambra Dam, Poulomi Diaz-Santos, Tanio Gómez-Espinoza, Diego Hadi, Ali Ikeda, Ryota Posses, Ana Romano, Michael Sternberg, Amiel Villanueva, Vicente Wang, Wuji |
| author_facet | Lee, Lilian L. Schreiber, Natascha M. Förster Fujimoto, Seiji Faisst, Andreas L. Herrera-Camus, Rodrigo Genzel, Reinhard Tacconi, Linda J. Lutz, Dieter Renzini, Alvio Sanders, Ryan Wisnioski, Emily Wuyts, Stijn Parlanti, Eleonora Jones, Gareth Übler, Hannah Liu, Daizhong Chen, Jianhang Davies, Ric I. Tozzi, Giulia Burkert, Andreas Price, Sedona H. Aravena, Manuel Boquien, Médéric Béthermin, Matthieu da Cunha, Elisabete Davies, Rebecca L. De Looze, Ilse Dessauges-Zavadsky, Miroslava Ferrara, Andrea Fisher, Deanne B. Gillman, Steven Ginolfi, Michele Ibar, Edo Koekemoer, Anton M. Molina, Juan Naab, Thorsten Relaño, Mónica Riechers, Dominik A. Sanders, David B. Spilker, Justin S. Vallini, Livia Zamorani, Giovanni Nanni, Ambra Dam, Poulomi Diaz-Santos, Tanio Gómez-Espinoza, Diego Hadi, Ali Ikeda, Ryota Posses, Ana Romano, Michael Sternberg, Amiel Villanueva, Vicente Wang, Wuji |
| contents | We present gas-phase radial metallicity profiles for 20 main-sequence galaxies at $4<z<6$, primarily based on JWST NIRSpec IFU observations obtained as part of the JWST-ALPINE-CRISTAL programme. Our study aims to connect the metallicity gradients of these galaxies with their kinematic properties from [CII]158$μ$m ALMA observations. We mapped the radial profiles of oxygen abundance using the strong-line method leveraging the rich set of rest-frame optical emission lines. Linear fits to the annular-binned radial profiles show that, on average, the metallicity gradients are slightly positive with a median of $+0.039 \pm 0.010{\rm dexkpc^{-1}}$. There are no substantial systematic offsets in gradients when using different line diagnostics. However, only three galaxies show a gradient $>0.05{\rm dexkpc^{-1}}$ at $1σ$, and none have a significant negative gradient. We investigated the correlation between the metallicity gradients and the intrinsic gas velocity dispersion $σ_0$ as well as the $V_{\rm rot}/σ_0$ ratio of the disks. Combining our sample with mass-matched literature samples at $3<z<7$, we found a negative shallow correlation between $V_{\rm rot}/σ_0$ and the metallicity gradients, but no strong relationships with $σ_0$. As $V_{\rm rot}/σ_0$ increases towards later cosmic times, the observed negative trend with $V_{\rm rot}/σ_0$ is consistent with the overall cosmic evolution of metallicity gradients from high to low redshifts. This suggests that disk maturity plays a crucial role in shaping the radial metallicity gradients. [Abridged abstract] |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_13493 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The ALPINE-CRISTAL-JWST Survey: Gas-phase abundance gradients of main sequence star-forming galaxies and their kinematics at $4 < z < 6$ Lee, Lilian L. Schreiber, Natascha M. Förster Fujimoto, Seiji Faisst, Andreas L. Herrera-Camus, Rodrigo Genzel, Reinhard Tacconi, Linda J. Lutz, Dieter Renzini, Alvio Sanders, Ryan Wisnioski, Emily Wuyts, Stijn Parlanti, Eleonora Jones, Gareth Übler, Hannah Liu, Daizhong Chen, Jianhang Davies, Ric I. Tozzi, Giulia Burkert, Andreas Price, Sedona H. Aravena, Manuel Boquien, Médéric Béthermin, Matthieu da Cunha, Elisabete Davies, Rebecca L. De Looze, Ilse Dessauges-Zavadsky, Miroslava Ferrara, Andrea Fisher, Deanne B. Gillman, Steven Ginolfi, Michele Ibar, Edo Koekemoer, Anton M. Molina, Juan Naab, Thorsten Relaño, Mónica Riechers, Dominik A. Sanders, David B. Spilker, Justin S. Vallini, Livia Zamorani, Giovanni Nanni, Ambra Dam, Poulomi Diaz-Santos, Tanio Gómez-Espinoza, Diego Hadi, Ali Ikeda, Ryota Posses, Ana Romano, Michael Sternberg, Amiel Villanueva, Vicente Wang, Wuji Astrophysics of Galaxies We present gas-phase radial metallicity profiles for 20 main-sequence galaxies at $4<z<6$, primarily based on JWST NIRSpec IFU observations obtained as part of the JWST-ALPINE-CRISTAL programme. Our study aims to connect the metallicity gradients of these galaxies with their kinematic properties from [CII]158$μ$m ALMA observations. We mapped the radial profiles of oxygen abundance using the strong-line method leveraging the rich set of rest-frame optical emission lines. Linear fits to the annular-binned radial profiles show that, on average, the metallicity gradients are slightly positive with a median of $+0.039 \pm 0.010{\rm dexkpc^{-1}}$. There are no substantial systematic offsets in gradients when using different line diagnostics. However, only three galaxies show a gradient $>0.05{\rm dexkpc^{-1}}$ at $1σ$, and none have a significant negative gradient. We investigated the correlation between the metallicity gradients and the intrinsic gas velocity dispersion $σ_0$ as well as the $V_{\rm rot}/σ_0$ ratio of the disks. Combining our sample with mass-matched literature samples at $3<z<7$, we found a negative shallow correlation between $V_{\rm rot}/σ_0$ and the metallicity gradients, but no strong relationships with $σ_0$. As $V_{\rm rot}/σ_0$ increases towards later cosmic times, the observed negative trend with $V_{\rm rot}/σ_0$ is consistent with the overall cosmic evolution of metallicity gradients from high to low redshifts. This suggests that disk maturity plays a crucial role in shaping the radial metallicity gradients. [Abridged abstract] |
| title | The ALPINE-CRISTAL-JWST Survey: Gas-phase abundance gradients of main sequence star-forming galaxies and their kinematics at $4 < z < 6$ |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2603.13493 |