{
  "abstract": "In this study, we present the full (97.3\\% complete) 0.8--12.5 $μ$m spectral energy distribution (SED) of an L/T transition object, CWISE J210640.16+250729.0 (CW2106), using the James Webb Space Telescope (JWST). We provide a full characterization of the host star's elemental abundances and age. We empirically derive the bolometric luminosity ($L_{\\rm bol}\\approx-4.825$ $\\textup{L}_\\odot$) of CW2106, and obtain estimates of its mass (M$\\approx50-62$ M$_{\\rm Jup}$), radius (R$\\approx0.83-0.87$ R$_{\\rm Jup}$), effective temperature ($T_{\\rm eff}$$\\approx1213$ K), and surface gravity ($\\log~g$$\\approx5.28$ dex). We find the near-infrared (near-IR) spectrum ($0.8-2.5 ~μ$m) is best reproduced with cloudy atmospheric models while the mid-infrared (mid-IR) spectrum ($5-12.5 ~μ$m) is best reproduced with cloudless models. This suggests a cloud layer restricted to only the deepest observable parts of the atmosphere and is qualified by the lack of a 9 $μ$m silicate feature. Making use of the Mg/Si ratio of the primary, alongside thermochemical models, we predict the clouds in CW2106 to be composed primarily of enstatite (MgSiO$_3$), removing $\\sim23\\%$ of the bulk oxygen out of the atmosphere. Future retrieval studies will be able to help investigate the existence and full impact of these cloud species.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.13433",
  "author_total": 19,
  "authors": [
    {
      "name": "Austin Rothermich"
    },
    {
      "name": "Jacqueline K. Faherty"
    },
    {
      "name": "Ben Burningham"
    },
    {
      "name": "Catherine Manea"
    },
    {
      "name": "Emily Calamari"
    },
    {
      "name": "Genaro Suárez"
    },
    {
      "name": "Daniella C. Bardalez Gagliuffi"
    },
    {
      "name": "John M. Brewer"
    },
    {
      "name": "Kelle L. Cruz"
    },
    {
      "name": "Josefine Gaarn"
    },
    {
      "name": "Jonathan Gagné"
    },
    {
      "name": "Eileen C. Gonzales"
    },
    {
      "name": "Marina E. Gemma"
    },
    {
      "name": "Viktória Kecskeméthy"
    },
    {
      "name": "Mark S. Marley"
    },
    {
      "name": "Caprice L. Phillips"
    },
    {
      "name": "Channon Visscher"
    },
    {
      "name": "Johanna M. Vos"
    },
    {
      "name": "Niall Whiteford"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/41zcz6g14fwn6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.13433",
  "fulltext_url": null,
  "id": "41zcz6g14fwn6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.13433",
  "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"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7213317962",
  "pdf_url": "https://arxiv.org/pdf/2609.13433",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/41zcz6g14fwn6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.13433",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.13433"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Sinking Silicates I: Characterizing the benchmark system containing the T0 brown dwarf CWISE J210640.16+250729.0 using JWST",
  "title_text": "Sinking Silicates I: Characterizing the benchmark system containing the T0 brown dwarf CWISE J210640.16+250729.0 using JWST",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/41zcz6g14fwn6",
  "venue": "arXiv",
  "versions": []
}