{
  "abstract": "Spatially resolved dust rings in protoplanetary disks are widely used to infer disk and dust physics from multi-wavelength continuum observations. Their interpretation, however, often neglects grain growth and the evolution of the size distribution, limiting the connection between observed ring profiles and dust-evolution parameters. Building on a physical dust-ring model that includes coagulation and fragmentation, we develop a Bayesian inference framework that jointly incorporates radiative transfer and finite angular resolution. When applied to two rings in HD 163296 and two in LkCa 15, our framework yields gas-dependent estimates of the key dust-evolution parameters such as turbulence strength $α$ and the fragmentation velocity $v_{\\rm frag}$ in a self-consistent way. Most rings admit both a low-$α$, low-$v_{\\rm frag}$ branch with small grains, and a higher-$α$, higher-$v_{\\rm frag}$ branch with larger grains. Typical low-$α$ branches have $α\\sim10^{-5}$--$10^{-4}$ and fragmentation velocities of order cm s$^{-1}$ level, whereas the higher-$α$ branches reach $α\\sim10^{-3}$--$10^{-2}$ and fragmentation velocities of a few to $20$ m s$^{-1}$. The observed broad and wavelength-dependent profiles near the ring peaks can be reproduced by intrinsically narrow dust rings. This new framework offers a more direct route from multi-wavelength continuum data to the microphysics of dust growth and trapping---a connection that can be robustly tested with future high-resolution observations at longer wavelengths.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16556",
  "author_total": 9,
  "authors": [
    {
      "name": "Linhan Yang"
    },
    {
      "name": "Ya-Ping Li"
    },
    {
      "name": "Ruobing Dong"
    },
    {
      "name": "Yinhao Wu"
    },
    {
      "name": "Hauyu Baobab Liu"
    },
    {
      "name": "Kiyoaki Doi"
    },
    {
      "name": "Anibal Sierra"
    },
    {
      "name": "Greta Guidi"
    },
    {
      "name": "Pinghui Huang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8y8wy10fgexbk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16556",
  "fulltext_url": null,
  "id": "8y8wy10fgexbk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16556",
  "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",
      "3103|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W7213439374",
  "pdf_url": "https://arxiv.org/pdf/2609.16556",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8y8wy10fgexbk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16556",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16556"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "Multi-wavelength Constraints on Dust Dynamics and Size Evolution in Protoplanetary Disk Rings. II. Observational Implications",
  "title_text": "Multi-wavelength Constraints on Dust Dynamics and Size Evolution in Protoplanetary Disk Rings. II. Observational Implications",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/8y8wy10fgexbk",
  "venue": "arXiv",
  "versions": []
}