{
  "abstract": "We combine wide-area COSMOS-3D observations with deeper GOODS-N data from JWST/NIRCam F444W wide-field slitless spectroscopy to trace cosmic star formation over $z\\sim0$--9. The observations cover approximately $0.33~\\mathrm{deg}^2$ in COSMOS and $60.9~\\mathrm{arcmin}^2$ in GOODS-N, with typical $3σ$ integrated line-flux limits of $3.2\\times10^{-18}$ and $1.04\\times10^{-18}~\\mathrm{erg\\,s^{-1}\\,cm^{-2}}$, respectively. The common $3.9$--$5.0\\,μ$m wavelength window probes Br$α$, Br$β$, Pa$α$, Pa$β$, H$α$, and H$β$ across the local Universe, cosmic noon, and reionization. Our final sample contains 9146 galaxies, including 7883 in COSMOS and 1263 in GOODS-N. COSMOS constrains luminous emitters, while GOODS-N extends the luminosity functions toward fainter sources. We measure dust-corrected line luminosities, account for line-detection completeness, and convert the six lines to equivalent H$α$ luminosities assuming Case B recombination. Schechter fits reveal an increase in the characteristic H$α$-equivalent luminosity toward cosmic noon. Integrating the resulting star formation rate functions above $0.24\\,M_\\odot\\,\\mathrm{yr}^{-1}$, we trace the cosmic star formation rate density from the local Universe to reionization. The combined Brackett, Paschen, and Balmer measurements are broadly consistent with the canonical UV- and IR-based cosmic star formation history at $z\\lesssim6$. Fixed-slope tests show that the H$β$ estimate at $z\\sim8$ remains sensitive to the external photometric faint-end constraint and extrapolation below our spectroscopic limit. These measurements provide complementary constraints on the distribution and integrated rate of star formation across cosmic time.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.19318",
  "author_total": 12,
  "authors": [
    {
      "name": "Shuqi Fu"
    },
    {
      "name": "Linhua Jiang"
    },
    {
      "name": "Christopher J. Conselice"
    },
    {
      "name": "Zijian Zhang"
    },
    {
      "name": "Danyang Jiang"
    },
    {
      "name": "Jie Chen"
    },
    {
      "name": "Louis Quilley"
    },
    {
      "name": "Fengwu Sun"
    },
    {
      "name": "Ronaldo Laishram"
    },
    {
      "name": "Alberto Traina"
    },
    {
      "name": "Bahareh S. Salmasi"
    },
    {
      "name": "Duncan Austin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e7wqn15wrb2d4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.19318",
  "fulltext_url": null,
  "id": "e7wqn15wrb2d4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.19318",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7222202877",
  "pdf_url": "https://arxiv.org/pdf/2610.19318",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e7wqn15wrb2d4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2610.19318",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.19318"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "A JWST View of Cosmic Star Formation from $z\\sim0$ to 9 with Hydrogen Recombination Lines in the COSMOS and GOODS-N fields",
  "title_text": "A JWST View of Cosmic Star Formation from z∼0 to 9 with Hydrogen Recombination Lines in the COSMOS and GOODS-N fields",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:31Z",
  "url": "https://research.draconitic.com/paper/e7wqn15wrb2d4",
  "venue": "arXiv",
  "versions": []
}