{
  "abstract": "Our understanding of the physical properties of star-forming galaxies during the Epoch of Reionization (EoR; at z > 6) suffers from degeneracies among the apparent properties of the stars, nebular gas, and dust. These degeneracies are most prominent with photometry, which has insufficient (1) spectral resolution and (2) rest-frame spectral coverage. We explore ways to break these degeneracies with a sample of N = 22 high-redshift star-forming galaxies at 7 < z phot ≤ 9, using some of the deepest existing imaging from JWST/NIRCam and JWST/MIRI with JADES. Key to this study is the imaging from JWST/MIRI at 7.7 μ m, which provides coverage of the rest-frame I band at the observed redshifts. We infer stellar population properties and rest-frame colors using a variety of filter sets and star formation history (SFH) assumptions to explore the impact of these choices. Evaluating these quantities both with and without the 7.7 μ m data point shows that dense spectral coverage with JWST/NIRCam (eight or more filters, including at least one medium-band at λ obs ≈ 4–5 μ m) can compensate for lacking the rest-frame I -band coverage for the vast majority (≈80%) of our sample. Furthermore, these galaxy properties are most consistently determined by assuming the delayed-tau SFH, which provides the smallest offsets and scatters around these offsets when including JWST/MIRI. Within extragalactic surveys like JADES and CEERS, our findings suggest that robust characterization of the stellar population properties and rest-frame colors for typical high-redshift star-forming galaxies (i.e., galaxies with M UV ≈ −20 and β UV ≈ −2) is possible with JWST/NIRCam alone at z ≈ 8.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2506.02099",
  "author_total": 33,
  "authors": [
    {
      "name": "Jakob Helton"
    },
    {
      "name": "Stacey Alberts"
    },
    {
      "name": "George Rieke"
    },
    {
      "name": "Kevin Hainline"
    },
    {
      "name": "Zhiyuan Ji"
    },
    {
      "name": "Marcia Rieke"
    },
    {
      "name": "Benjamin Johnson"
    },
    {
      "name": "Brant Robertson"
    },
    {
      "name": "Sandro Tacchella"
    },
    {
      "name": "Lily Whitler"
    },
    {
      "name": "William Baker"
    },
    {
      "name": "Rachana Bhatawdekar"
    },
    {
      "name": "Kristan Boyett"
    },
    {
      "name": "Andrew Bunker"
    },
    {
      "name": "Phillip Cargile"
    },
    {
      "name": "Stefano Carniani"
    },
    {
      "name": "Stephane Charlot"
    },
    {
      "name": "Jacopo Chevallard"
    },
    {
      "name": "Emma Curtis-Lake"
    },
    {
      "name": "Eiichi Egami"
    },
    {
      "name": "Daniel Eisenstein"
    },
    {
      "name": "Ryan Hausen"
    },
    {
      "name": "Jianwei Lyu"
    },
    {
      "name": "Roberto Maiolino"
    },
    {
      "name": "Erica Nelson"
    },
    {
      "name": "Pablo Pérez-González"
    },
    {
      "name": "Pierluigi Rinaldi"
    },
    {
      "name": "Meredith Stone"
    },
    {
      "name": "Fengwu Sun"
    },
    {
      "name": "Christina Williams"
    },
    {
      "name": "Christopher Willmer"
    },
    {
      "name": "Chris Willott"
    },
    {
      "name": "Joris Witstok"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bw82sy114n0nf.bib",
  "cited_by": 1,
  "doi": "10.3847/1538-4357/ae5dcd",
  "fulltext_url": null,
  "id": "bw82sy114n0nf",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://hal.science/hal-05760806v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "hal",
      "2.phys.astr.co"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7168195663",
  "pdf_url": "https://hal.science/hal-05760806/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-13",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/bw82sy114n0nf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:43Z",
      "native_id": "hal-05760806",
      "source": "hal",
      "url": "https://hal.science/hal-05760806v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "hal:2.phys.astr.co",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "The Stellar Populations and Rest-frame Colors of Star-forming Galaxies at z ≈ 8: Exploring the Impact of Filter Choice and Star Formation History Assumption with JADES",
  "title_text": "The Stellar Populations and Rest-frame Colors of Star-forming Galaxies at z ≈ 8: Exploring the Impact of Filter Choice and Star Formation History Assumption with JADES",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:43Z",
  "url": "https://research.draconitic.com/paper/bw82sy114n0nf",
  "venue": "The Astrophysical Journal",
  "versions": []
}