{
  "abstract": "Lensed and Pristine 1 (LAP1) is one of the most promising candidates for the detection of so-called Pop~III stars at $z\\sim6.6$. In this work, we present new high-spectral-resolution ($R \\sim 2700$) \\jwst NIRSpec-IFS observations of the system along with a detailed re-analysis of all archival \\jwst and VLT/MUSE data. We confirm the very low metallicity of the system, with $12+\\log(\\text{O/H})=6.5\\text{--}6.8$ (1--2\\% Z$_{\\odot}$), and its low stellar mass, with $M_{*}= 10^{3\\text{--}4}$ \\Msun, based on the non-detection in \\jwst/NIRCam filter stacks and the \\Hbeta luminosity. The high-resolution IFS data allow us to constrain the upper limits on the dynamical masses ($\\log_{10}(M_{*}/M_{\\odot})$) of the A and B components to $<6.6\\text{--}7.6$ and $<5.6\\text{--}6.6$, respectively. Based on the metallicity and the high equivalent width of \\Halpha (EW $>1200$\\,Å), we estimate the possible range of the LAP1 stellar population ages to be $2\\text{--}5$~Myr, consistent with the first burst of star formation in a pristine environment. Based on the size ($<10$~pc) and mass of the system, we discuss the nature of LAP1 as representing the formation of the first stellar clusters in a larger undetected galaxy, similar to other low-metallicity Pop~III candidates in the literature.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.35945",
  "author_total": 31,
  "authors": [
    {
      "name": "J. Scholtz"
    },
    {
      "name": "R. Maiolino"
    },
    {
      "name": "S. Carniani"
    },
    {
      "name": "E. Vanzella"
    },
    {
      "name": "R. J. Terlevich"
    },
    {
      "name": "H. Übler"
    },
    {
      "name": "M. Perna"
    },
    {
      "name": "S. Arribas"
    },
    {
      "name": "E. Bertola"
    },
    {
      "name": "P. Bergamini"
    },
    {
      "name": "T. Böker"
    },
    {
      "name": "A. Bolamperti"
    },
    {
      "name": "A. Bunker"
    },
    {
      "name": "S. Charlot"
    },
    {
      "name": "M. Curti"
    },
    {
      "name": "F. D'Eugenio"
    },
    {
      "name": "C. Grillo"
    },
    {
      "name": "L. R. Ivey"
    },
    {
      "name": "X. Ji"
    },
    {
      "name": "G. C. Jones"
    },
    {
      "name": "M. Meneghetti"
    },
    {
      "name": "M. M. Messa"
    },
    {
      "name": "R. Pascalau"
    },
    {
      "name": "B. Rodríguez Del Pino"
    },
    {
      "name": "P. Rosati"
    },
    {
      "name": "E. Rusta"
    },
    {
      "name": "S. Salvadori"
    },
    {
      "name": "E. Terlevich"
    },
    {
      "name": "G. Venturi"
    },
    {
      "name": "S. Zamora"
    },
    {
      "name": "A. Zanella"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e3wnwk4m0cm8p.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.35945",
  "fulltext_url": null,
  "id": "e3wnwk4m0cm8p",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.35945",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7214995440",
  "pdf_url": "https://arxiv.org/pdf/2609.35945",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e3wnwk4m0cm8p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.35945",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.35945"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "GA-NIFS view of LAP1: Assembly of Pop~III stellar clusters during EoR",
  "title_text": "GA-NIFS view of LAP1: Assembly of Pop~III stellar clusters during EoR",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/e3wnwk4m0cm8p",
  "venue": "arXiv",
  "versions": []
}