{
  "abstract": "T Coronae Borealis (T CrB, HD 143454) is a symbiotic recurrent nova consisting of a red giant and white dwarf with recent eruptions in 1866 and 1946 and an anticipated eruption in the mid-2020s. We report Center for High Angular Resolution Astronomy (or CHARA) Array observations collected with MIRC-X ( H band) and MYSTIC ( K band) in 2022–2025. We fit limb-darkened disk models constrained with literature limb-darkening coefficients to the squared visibilities as only the first visibility lobe is sampled. The average limb-darkened diameter of the star across these epochs is 0.70 ± 0.04 mas in the H band and 0.72 ± 0.07 mas in the K band. Adopting a distance of 91 4 − 22 + 24 pc, the corresponding stellar radius is 69 ± 5 R ⊙ in the H band and 71 ± 8 R ⊙ in the K band. These values are consistent with the Roche-lobe volume radius of 71 R ⊙ inferred from published orbital solutions. These measurements provide a preeruption angular diameter and support a Roche-lobe-filling donor.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.17272",
  "author_total": 41,
  "authors": [
    {
      "name": "Ryan Norris"
    },
    {
      "name": "Narsireddy Anugu"
    },
    {
      "name": "Thomas Gaudin"
    },
    {
      "name": "Magdalena Otulakowska-Hypka"
    },
    {
      "name": "Fabian Kaczmarek"
    },
    {
      "name": "Cameron Caruso"
    },
    {
      "name": "Cody Gustafson"
    },
    {
      "name": "Andrew Kotowski"
    },
    {
      "name": "Rebecca Proni"
    },
    {
      "name": "Nirupam Roy"
    },
    {
      "name": "Fabien Baron"
    },
    {
      "name": "Dipankar P.K Banerjee"
    },
    {
      "name": "Dana Baylis-Aguirre"
    },
    {
      "name": "Michelle Creech-Eakman"
    },
    {
      "name": "Justin Linford"
    },
    {
      "name": "Alexandre Gallenne"
    },
    {
      "name": "Joanna Mikołajewska"
    },
    {
      "name": "John Monnier"
    },
    {
      "name": "Denis Mourard"
    },
    {
      "name": "Ulisse Munari"
    },
    {
      "name": "Nicolas Nardetto"
    },
    {
      "name": "Rachael Roettenbacher"
    },
    {
      "name": "Jennifer Sokoloski"
    },
    {
      "name": "Montana Williams"
    },
    {
      "name": "C. Woodward"
    },
    {
      "name": "Stefan Kraus"
    },
    {
      "name": "Jean-Baptiste Le Bouquin"
    },
    {
      "name": "Sorabh Chhabra"
    },
    {
      "name": "Isabelle Codron"
    },
    {
      "name": "Jacob Ennis"
    },
    {
      "name": "Tyler Gardner"
    },
    {
      "name": "Mayra Gutierrez"
    },
    {
      "name": "Noura Ibrahim"
    },
    {
      "name": "Cyprien Lanthermann"
    },
    {
      "name": "Benjamin Setterholm"
    },
    {
      "name": "Christopher Farrington"
    },
    {
      "name": "Olli Majoinen"
    },
    {
      "name": "Norm Vargas"
    },
    {
      "name": "Douglas Gies"
    },
    {
      "name": "Gail Schaefer"
    },
    {
      "name": "Theo ten Brummelaar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ac8b3h386chak.bib",
  "cited_by": 0,
  "doi": "10.3847/2041-8213/ae71d0",
  "fulltext_url": null,
  "id": "ac8b3h386chak",
  "issns": [
    "2041-8205",
    "2041-8213"
  ],
  "landing_url": "https://hal.science/hal-05791664v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "hal",
      "2.phys.astr.sr"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7163874851",
  "pdf_url": "https://hal.science/hal-05791664/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-08",
  "publisher": "Bristol : IOP Publishing",
  "ris": "https://research.draconitic.com/paper/ac8b3h386chak.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:57Z",
      "native_id": "hal-05791664",
      "source": "hal",
      "url": "https://hal.science/hal-05791664v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "hal:2.phys.astr.sr",
      "subfield": "stellar"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Pre-nova Observations of T CrB: A View from the CHARA Array",
  "title_text": "Pre-nova Observations of T CrB: A View from the CHARA Array",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:57Z",
  "url": "https://research.draconitic.com/paper/ac8b3h386chak",
  "venue": "The Astrophysical Journal Letters",
  "versions": []
}