{
  "abstract": "We present a homogeneous analysis of 268 confirmed and candidate transiting hot-Jupiter host stars with 4800K < Teff < 6200K. We combine high-resolution TRES spectra, Gaia, 2MASS and WISE photometry, and Gaia astrometry to determine these stars' Teff, log g, Rstar, [alpha/Fe] and [Fe/H]. Based on their [alpha/Fe] and [Fe/H], we classify the stars as members of the Milky Way's low-[alpha/Fe] thin disk, high-[alpha/Fe] thick disk or an ambiguous intermediate population. We identify two confirmed hot Jupiters (WASP-81 b and TOI-5322 b) and three candidate hot Jupiters (TOI-3118.01, TOI-2728.01, and TOI-5781.01) as orbiting previously-unrecognized members of the high-alpha thick disk. We compare the properties of the confirmed planets in the three populations and note two indications of a potential difference between the populations: both high-[alpha/Fe] confirmed planets and eight out of the eleven ambiguous-disk confirmed planets are less massive than the median low-[alpha/Fe] planet, and none of our high-[alpha/Fe] or ambiguous confirmed planets have orbital periods shorter than 2.7 d, when 22% of our low-[alpha/Fe] population do. These differences may reflect variations in giant-planet formation across galactic environments, evolutionary effects, or differing stellar properties between the high- and low-[alpha/Fe] populations. Our catalog is the largest sample of chemically-identified high-[alpha/Fe] thick-disk confirmed and candidate hot-Jupiter host stars. These ancient systems, with ages > 8 Gyr, may allow for a better understanding of how the formation of hot Jupiters depends on galactic environment, and how their orbits evolve over very long time scales.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.22254",
  "author_total": 9,
  "authors": [
    {
      "name": "Victoria DiTomasso"
    },
    {
      "name": "Samuel W. Yee"
    },
    {
      "name": "Romy Rodriguez Martinez"
    },
    {
      "name": "Emily K. Pass"
    },
    {
      "name": "Phillip A. Cargile"
    },
    {
      "name": "David Charbonneau"
    },
    {
      "name": "Andrew Vanderburg"
    },
    {
      "name": "David W. Latham"
    },
    {
      "name": "Vedant Chandra"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4a631xexgge44.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.22254",
  "fulltext_url": null,
  "id": "4a631xexgge44",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.22254",
  "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.GA"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7222432082",
  "pdf_url": "https://arxiv.org/pdf/2610.22254",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4a631xexgge44.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.22254",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.22254"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "A Sample of Thick-Disk Stars Hosting Hot Jupiters",
  "title_text": "A Sample of Thick-Disk Stars Hosting Hot Jupiters",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/4a631xexgge44",
  "venue": "arXiv",
  "versions": []
}