{
  "abstract": "We present a multi-wavelength physical characterization of 14 luminous Ly$α$ emitters (LAEs) at $z\\approx6$, integrating deep ground-based Magellan/M2FS spectroscopy with heterogeneous JWST/NIRCam broad- and medium-band imaging. Identified via strong Ly$α$ lines with extreme Ly$α$ luminosities of ${>}10^{42.6}$ erg s$^{-1}$, the sample exhibits very large rest-frame equivalent widths (${\\gtrsim}100$ Å) and steeply blue UV continua ($β_{\\rm median}\\simeq-2.2$, $-18.2>M_{\\rm 1500}>-20.2$ mag). Crucially, the integration of NIRCam medium-band photometry (F410M) breaks the degeneracy between strong rest-optical nebular emission and Balmer breaks, resolving prior mass overestimations. The tightly constrained spectral energy distribution modeling demonstrates that these luminous LAEs tend to be unequivocally low-mass, ultra-young dwarf starbursts; half the sample is characterized by stellar masses of $M_* < 10^8 M_{\\odot}$, ages $\\lesssim10$ Myr, and negligible dust attenuation. We also map the production efficiency of ionizing photons and Ly$α$ escape fractions ($f_{\\rm esc}^{\\rm Lyα}$). The $f_{\\rm esc}^{\\rm Lyα}$ values are exceptionally high, with a median of ${\\gtrsim}40$%, increasing for the bluer UV continua. Finally, analyzing spatial offsets between the Ly$α$ centroid and the stellar counterpart, we demonstrate empirically that internal dust content, rather than neutral hydrogen gas, dominate the suppression of Ly$α$ radiative transfer. Our study reveals that strong Ly$α$ emission of the luminous LAEs are generally attributed to both the vigorous starburst activities and the high $f_{\\rm esc}^{\\rm Lyα}$. Resembling Lyman continuum leakers, these extreme dwarf systems function as highly efficient ionizing engines at the conclusion of the Epoch of Reionization.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: 2026 ApJL 1009 L4",
  "arxiv": "2605.14313",
  "author_total": 7,
  "authors": [
    {
      "name": "Yuanhang Ning"
    },
    {
      "name": "Zheng Cai"
    },
    {
      "name": "Linhua Jiang"
    },
    {
      "name": "Qiong Li"
    },
    {
      "name": "Si-Yue Yu"
    },
    {
      "name": "Xiaodi Yu"
    },
    {
      "name": "Zhen-Ya Zheng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f6stmr9hre1nr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.14313",
  "fulltext_url": null,
  "id": "f6stmr9hre1nr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.14313",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2605.14313",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f6stmr9hre1nr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2605.14313",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.14313"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "An Updated Characterization of Luminous Lyα emitters at the End of Reionization",
  "title_text": "An Updated Characterization of Luminous Lyα emitters at the End of Reionization",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/f6stmr9hre1nr",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/2041-8213/aea091",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}