{
  "abstract": "We report new ALMA Band 7 high-resolution ($\\sim$0.05$^{''}$) continuum and $^{12}\\text{CO}\\ (J=3\\text{--}2)$ observations of the disk around the young low-mass star Sz 76. Visibility-plane modeling reveals a previously undetected, faint outer dust ring centered at $\\sim$45 au surrounding the compact central disk. Including this low-surface-brightness feature increases the characteristic dust radius from $R_{\\text{dust,68}} \\approx 7$ au to $41$ au. Combined with an outer gas extent of $R_{\\text{CO,68}} \\approx 77$ au, the resulting gas-to-dust size ratio decreases from an extreme value of $\\sim$11 to $\\sim$2, placing Sz 76 in line with typical protoplanetary disks and contradicting a scenario of unimpeded inward radial drift. These results demonstrate that spatial filtering or limited surface-brightness sensitivity can severely underestimate disk sizes, highlighting the necessity of multi-scale observations to properly identify dust traps and accurately constrain disk evolution.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.09881",
  "author_total": 12,
  "authors": [
    {
      "name": "Giulia Ricciardi"
    },
    {
      "name": "Anna Miotello"
    },
    {
      "name": "Karina Mauco"
    },
    {
      "name": "Carlo F. Manara"
    },
    {
      "name": "Stefano Facchini"
    },
    {
      "name": "Agnes Kóspál"
    },
    {
      "name": "Juan M. Alcalá"
    },
    {
      "name": "Jochen Eislöeffel"
    },
    {
      "name": "Catherine C. Espaillat"
    },
    {
      "name": "Miguel Vioque"
    },
    {
      "name": "Jonathan P. Williams"
    },
    {
      "name": "Zhen Guo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1shf4wxq5mnkn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.09881",
  "fulltext_url": null,
  "id": "1shf4wxq5mnkn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.09881",
  "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.EP"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.09881",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1shf4wxq5mnkn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.09881",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.09881"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "A faint dust ring beyond the compact disk of Sz 76",
  "title_text": "A faint dust ring beyond the compact disk of Sz 76",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/1shf4wxq5mnkn",
  "venue": "arXiv",
  "versions": []
}