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arXiv · 2603.13493

The ALPINE-CRISTAL-JWST Survey: Gas-phase abundance gradients of main sequence star-forming galaxies and their kinematics at $4 < z < 6$

Lilian L. Lee·Natascha M. Förster Schreiber·Seiji Fujimoto·Andreas L. Faisst·Rodrigo Herrera-Camus·Reinhard Genzel·Linda J. Tacconi·Dieter Lutz·Alvio Renzini·Ryan Sanders·Emily Wisnioski·Stijn Wuyts·Eleonora Parlanti·Gareth Jones·Hannah Übler·Daizhong Liu·Jianhang Chen·Ric I. Davies·Giulia Tozzi·Andreas Burkert·Sedona H. Price·Manuel Aravena·Médéric Boquien·Matthieu Béthermin·Elisabete da Cunha·Rebecca L. Davies·Ilse De Looze·Miroslava Dessauges-Zavadsky·Andrea Ferrara·Deanne B. Fisher·Steven Gillman·Michele Ginolfi·Edo Ibar·Anton M. Koekemoer·Juan Molina·Thorsten Naab·Mónica Relaño·Dominik A. Riechers·David B. Sanders·Justin S. Spilker·Livia Vallini·Giovanni Zamorani·Ambra Nanni·Poulomi Dam·Tanio Diaz-Santos·Diego Gómez-Espinoza·Ali Hadi·Ryota Ikeda·Ana Posses·Michael Romano·Amiel Sternberg·Vicente Villanueva·Wuji Wang
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Abstract

We present gas-phase radial metallicity profiles for 20 main-sequence galaxies at $4 0.05{\rm dexkpc^{-1}}$ at $1\sigma$, and none have a significant negative gradient. We investigated the correlation between the metallicity gradients and the intrinsic gas velocity dispersion $\sigma_0$ as well as the $V_{\rm rot}/\sigma_0$ ratio of the disks. Combining our sample with mass-matched literature samples at $3<z<7$, we found a negative shallow correlation between $V_{\rm rot}/\sigma_0$ and the metallicity gradients, but no strong relationships with $\sigma_0$. As $V_{\rm rot}/\sigma_0$ increases towards later cosmic times, the observed negative trend with $V_{\rm rot}/\sigma_0$ 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]

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Lilian L. Lee, Natascha M. Förster Schreiber, Seiji Fujimoto, Andreas L. Faisst, Rodrigo Herrera-Camus, Reinhard Genzel, Linda J. Tacconi, Dieter Lutz, Alvio Renzini, Ryan Sanders, Emily Wisnioski, Stijn Wuyts, Eleonora Parlanti, Gareth Jones, Hannah Übler, Daizhong Liu, Jianhang Chen, Ric I. Davies, Giulia Tozzi, Andreas Burkert, Sedona H. Price, Manuel Aravena, Médéric Boquien, Matthieu Béthermin, Elisabete da Cunha, Rebecca L. Davies, Ilse De Looze, Miroslava Dessauges-Zavadsky, Andrea Ferrara, Deanne B. Fisher, Steven Gillman, Michele Ginolfi, Edo Ibar, Anton M. Koekemoer, Juan Molina, Thorsten Naab, Mónica Relaño, Dominik A. Riechers, David B. Sanders, Justin S. Spilker, Livia Vallini, Giovanni Zamorani, Ambra Nanni, Poulomi Dam, Tanio Diaz-Santos, Diego Gómez-Espinoza, Ali Hadi, Ryota Ikeda, Ana Posses, Michael Romano, Amiel Sternberg, Vicente Villanueva, Wuji Wang. 2026-03-13. The ALPINE-CRISTAL-JWST Survey: Gas-phase abundance gradients of main sequence star-forming galaxies and their kinematics at $4 < z < 6$. https://doi.org/10.1051/0004-6361%2F202557589

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