{
  "abstract": "Open clusters are powerful laboratories for investigating the formation and evolution of white dwarfs (WDs), as their well-constrained ages link WDs to their progenitor stars. This is particularly valuable for atypical WDs, including magnetic WDs and those with non-hydrogen-dominated spectra, whose origins can be difficult to disentangle in the field. We assemble the largest sample to date of atypical WDs in open clusters: eight non-magnetic WDs with helium-dominated spectra, five with featureless spectra, and five magnetic WDs showing hydrogen or helium lines. We find no significant difference between the initial--final mass relations of hydrogen- and helium-atmosphere WDs, nor robust spatial or kinematic differences. The strongest difference from the field is a deficit of non-DAs between $0.8$ and $1.0\\,\\mathrm{M}_\\odot$, where the field predicts $6.0^{+0.8}_{-0.7}$ WDs, yet none are observed, with a probability of only $0.37\\%$. Massive magnetic WDs show a similar deficit: only one of 20 cluster WDs with $M_{\\mathrm{WD}}\\geq1.0\\,\\mathrm{M}_\\odot$ and $T_{\\mathrm{eff}}\\geq20{,}000\\,{\\rm K}$ is magnetic, compared with 10 of 16 in the field. Together, these deficits are consistent with an additional field population of massive merger remnants, particularly high-mass magnetic WDs and warm/hot DQs. Such objects may be underrepresented in clusters because young systems provide limited time for certain classes of delayed mergers, while older clusters lose members or dissolve; the field accumulates binary evolution products over Galactic timescales. Magnetic cluster WDs consistent with single-star evolution further suggest mass-dependent magnetic-field emergence, with fields appearing early in some massive WDs while young lower-mass WDs remain consistent with delayed emergence.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10699",
  "author_total": 4,
  "authors": [
    {
      "name": "David R. Miller"
    },
    {
      "name": "Ilaria Caiazzo"
    },
    {
      "name": "Jeremy Heyl"
    },
    {
      "name": "Pier-Emmanuel Tremblay"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/arqmt62mw0aes.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10699",
  "fulltext_url": null,
  "id": "arqmt62mw0aes",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10699",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7221188901",
  "pdf_url": "https://arxiv.org/pdf/2610.10699",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/arqmt62mw0aes.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.10699",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10699"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Atypical White Dwarfs in Open Clusters",
  "title_text": "Atypical White Dwarfs in Open Clusters",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/arqmt62mw0aes",
  "venue": "arXiv",
  "versions": []
}