{
  "abstract": "O- and B-type stars are young and hot, thereby serving as vital tracers of the star formation and spiral arm structure of the Milky Way. At the dusk of the \\textit{Gaia} DR3 era, a high-confidence and accurate catalogue appears timely. We have characterized 105,971 OB-type stars (T$_{\\rm eff} >$ 10,000 K) within 2 kpc from the Sun, using an astro-photometric Bayesian inference tool. Our map unveils a complex view of the young stellar populations across the thin disk, with prominent large-scale features such as the Cepheus Spur, the Giant Oval Cavity, and a segment the Sagittarius-Carina arm all visible. Their inhomogeneous spatial distribution implies that massive star formation has taken place clustered across a few highly concentrated regions. We find a correlation between the overdensities of OB-type stars and young open clusters, and attribute departure from it to extinction effects. We identify 4200 stars as model-dependent core-collapse supernova (ccSN) or direct-collapse black hole (BH) progenitor candidates, including 6 ccSN progenitor candidates within 125 pc -- the maximum radius within which a ccSN explosion could be harmful to Earth's biosphere -- but our analysis suggests none of them exploding within the next 5 Myrs. Finally, we anticipate more evolved OB-type stars to collapse to form BHs within the next 1 Myr than ccSN progenitors will explode, despite the former's much scarcer number. A possible interpretation is a recent star formation burst in the local Milky Way, consistent with overdensities of ccSN progenitor candidates in Cyg OB2 and the Sagittarius-Carina arm.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.07068",
  "author_total": 13,
  "authors": [
    {
      "name": "Alexis L. Quintana"
    },
    {
      "name": "Kiril Maltsev"
    },
    {
      "name": "Eloisa Poggio"
    },
    {
      "name": "Emily L. Hunt"
    },
    {
      "name": "Nicholas J. Wright"
    },
    {
      "name": "Sara R. Berlanas"
    },
    {
      "name": "Laia Casamiquela"
    },
    {
      "name": "Abel de Burgos"
    },
    {
      "name": "Hanna Parul"
    },
    {
      "name": "Misha Haywood"
    },
    {
      "name": "Paola Di Matteo"
    },
    {
      "name": "Chervin Laporte"
    },
    {
      "name": "Juan Martínez García"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fwcgjwfrnk2jf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.07068",
  "fulltext_url": null,
  "id": "fwcgjwfrnk2jf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.07068",
  "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.GA"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7167796287",
  "pdf_url": "https://arxiv.org/pdf/2607.07068",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fwcgjwfrnk2jf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2607.07068",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.07068"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Unveiling the Milky Way with a Gaia DR3 census of OB-type stars within 2 kpc. I. Tracing local Galactic structure, massive star-forming regions and core-collapse supernova progenitors",
  "title_text": "Unveiling the Milky Way with a Gaia DR3 census of OB-type stars within 2 kpc. I. Tracing local Galactic structure, massive star-forming regions and core-collapse supernova progenitors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/fwcgjwfrnk2jf",
  "venue": "arXiv",
  "versions": []
}