{
  "abstract": "We analyze JWST spectroscopic and Hubble Space Telescope+JWST photometric observations of 659 star-forming galaxies at 1.4 < z < 9 from DR3 of the JADES survey and the AURORA Cycle 1 program. We measure the star-forming main sequence (SFMS) for galaxies above 10 8.5 M ⊙ where the sample is largely representative, estimating star-formation rates (SFRs) using the H α line flux and rest-frame far UV (1600 Å) continuum measurements, each independently corrected for dust attenuation. We find that the intrinsic, measurement-error-subtracted scatter in the SFMS ( σ int ) increases with decreasing stellar mass for the H α -based SFMS, and we find no mass dependence of σ int in the UV-based SFMS. Additionally, we find that σ int decreases with increasing redshift, from 0.3 6 − 0.02 + 0.02 dex to 0.2 2 − 0.07 + 0.08 dex (H α SFMS), and from 0.2 8 − 0.02 + 0.02 dex to 0.2 0 − 0.07 + 0.08 dex (UV SFMS) between z ∼ 2 and z ∼ 6.5. We also measure the redshift evolution of the specific SFR and find that, assuming sSFR ∝ (1 + z) γ , γ = 1.8 9 − 0.15 + 0.16 for the H α -based SFMS, and γ = 1.3 6 − 0.13 + 0.13 for the UV-based SFMS. Analyzing the observed H α /UV luminosity ratios and star-formation histories from the prospector fitting code, we find that 41%–60% of the sample is inconsistent with having a constant star-formation history. Finally, we find tentative evidence for shorter SFR burst timescales with increasing redshift based on the distribution of L H α / ν L ν ,1600 versus Δ log ( L H α ) . Taken together, these results are consistent with recent theoretical predictions (e.g., the thesan-zoom simulations) of bursty star formation in the early Universe and provide valuable constraints for theoretical models of galaxy evolution.",
  "abstract_shown": true,
  "affiliations": [
    "University of California",
    "University of Arizona",
    "Cosmic Dawn Center (DAWN)",
    "University of Copenhagen",
    "University of Kentucky"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Leonardo Clarke",
      "orcid": "0000-0003-1249-6392"
    },
    {
      "affs": [
        0
      ],
      "name": "Alice E. Shapley",
      "orcid": "0000-0003-3509-4855"
    },
    {
      "affs": [
        0
      ],
      "name": "Natalie Lam",
      "orcid": "0000-0001-9489-3791"
    },
    {
      "affs": [
        1
      ],
      "name": "Michael W. Topping",
      "orcid": "0000-0001-8426-1141"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Gabriel B. Brammer",
      "orcid": "0000-0003-2680-005X"
    },
    {
      "affs": [
        4
      ],
      "name": "Ryan L. Sanders",
      "orcid": "0000-0003-4792-9119"
    },
    {
      "affs": [
        0
      ],
      "name": "Naveen A. Reddy",
      "orcid": "0000-0001-9687-4973"
    },
    {
      "affs": [
        0
      ],
      "name": "Shreya Karthikeyan",
      "orcid": "0009-0002-6186-0293"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eev59zcad3m7t.bib",
  "cited_by": 24,
  "doi": "10.3847/1538-4357/ae9fec",
  "fulltext_url": null,
  "id": "eev59zcad3m7t",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae9fec",
  "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": [
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7221981782",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae9fec/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/eev59zcad3m7t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/ae9fec",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae9fec"
    },
    {
      "first_seen": "2026-11-08T13:20:39Z",
      "native_id": "W7221981782",
      "source": "openalex",
      "url": "https://doi.org/10.3847/1538-4357/ae9fec"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Galaxies: Formation, Evolution, Phenomena",
      "subfield": "galaxies"
    }
  ],
  "title": "The Star-forming Main Sequence and Bursty Star-formation Histories at z > 1.4 in JADES and AURORA",
  "title_text": "The Star-forming Main Sequence and Bursty Star-formation Histories at z > 1.4 in JADES and AURORA",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T13:20:39Z",
  "url": "https://research.draconitic.com/paper/eev59zcad3m7t",
  "venue": "The Astrophysical Journal",
  "versions": []
}