20.500.12556/RUL-176550 Metal-poor star-forming clumps in cosmic noon galaxies: evidence for gas inflow and chemical dilution using JWST NIRISS The formation and evolution of galaxies are intricately linked to the baryon cycle, which fuels star formation while shaping chemical abundances within galaxies. Investigating the relationship between star formation and metallicity for large samples of galaxies requires expensive IFU surveys or sophisticated tools to analyze grism data. Here we analyze JWST NIRISS slitless grism data using Sleuth, a tool that forward models and infers spatially resolved physical properties from grism data, including observations from JWST NIRISS/NIRCam and future grism data like that from the Roman Space Telescope. Sleuth enables the extraction of high-quality emission line maps from slitless spectra, overcoming contamination and spatially varying stellar populations, which previously limited such studies. Utilizing Sleuth with data from the Canadian NIRISS Unbiased Cluster Survey, we investigated the relationship between metallicity and star formation in the star-forming clumps of galaxies at 0.6 < z < 1.35. We analyzed a sample of 20 galaxies, extracted high-quality emission line maps with Sleuth, and analyzed, in detail, the spatially resolved properties of star-forming clumps. Using H$\alpha$, [S II], and [S III] emission line maps, we examined the spatially resolved metallicities, ionization, and star formation rates of our sample. Our findings reveal that these star-forming clumps show lower metallicities (∼0.1 dex) than their surrounding galactic environments, indicating a metallicity dilution of 20% within the clumps’ gas. Our analysis indicates that these clumps exhibit intensified star formation and reduced metallicity, likely due to the inflow of metal-poor gas. These clumps illustrate the dynamic relationship between star formation and chemical enrichment within galaxies. astrophysics field galaxies chemical abundances astrofizika galaksije v polju kemična sestava true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-03 14:09:43 2025-12-03 14:09:44 2025-12-22 04:02:56 0000-00-00 00:00:00 2025 0 0 16 str. no. 2, art. no. 188 Vol. 991 Oct. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 524.8 1538-4357 10.3847/1538-4357/adfb64 259812355 Estrada-Carpenter_2025_ApJ_991_188.pdf Estrada-Carpenter_2025_ApJ_991_188.pdf 1 2675DEF37AC25F7985A6D5FDEDFBF578 287defe2d55b560f4c150b715add6420a9b5f9fe6ae41ac19125b6333e543fb1 96e83f30-d04a-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=222952 https://iopscience.iop.org/article/10.3847/1538-4357/adfb64 0 9d1a7a61-d04a-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=222954 Fakulteta za matematiko in fiziko 0 0 0