{
  "abstract": "Stars observed in the solar vicinity were not necessarily born there. Radial mixing can redistribute stellar populations across the Galactic disc, decoupling their present-day locations from the environments in which they formed. We summarise a framework that combines Galactic chemical evolution models with a generalised additive model to infer stellar birth radii. We apply it to 1327 predominantly thin-disc planet hosts with homogeneous ages, \\textit{Gaia} DR3 astrometry, and \\texttt{SWEET-Cat} atmospheric parameters. We find that giant-planet systems preferentially trace metal-rich inner-disc birth environments, whereas rocky-only systems are less centrally concentrated; and no clear relation between radial displacement and detected planet multiplicity. Planet-host stars that migrate towards the inner parts of the Galaxy have systems with larger orbital separations; however, this may partly reflect the known dependence of planetary orbital properties on host-star metallicity rather than a causal effect of Galactic stellar migration. These results illustrate how Galactic archaeology can complement exoplanet demographics by linking planetary systems to their probable birth environments.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.19274",
  "author_total": 4,
  "authors": [
    {
      "name": "M. L. L. Dantas"
    },
    {
      "name": "J. J. García-Delgado"
    },
    {
      "name": "I. Rebollido"
    },
    {
      "name": "R. Smiljanic"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ee0e0pe0gewc6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.19274",
  "fulltext_url": null,
  "id": "ee0e0pe0gewc6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.19274",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/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": "W7213584642",
  "pdf_url": "https://arxiv.org/pdf/2609.19274",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ee0e0pe0gewc6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.19274",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.19274"
    }
  ],
  "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": "Galactic archaeology meets exoplanets: linking stellar birth radii to exoplanet demographics",
  "title_text": "Galactic archaeology meets exoplanets: linking stellar birth radii to exoplanet demographics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/ee0e0pe0gewc6",
  "venue": "arXiv",
  "versions": []
}