{
  "abstract": "We present an ALMA 1.3~mm dust continuum study of the dense core mass function (CMF) in Sh2-284, a low metallicity outer Galaxy star-forming complex with $Z\\sim1/3$--$1/2~Z_\\odot$. The observations cover six far-infrared bright subregions at $\\sim$0.65\" (3000~au) resolution. We identify a total of 91 candidate dense cores and define a robust catalog of 68 cores with Gaussian fitting. The high-mass CMF above 2.5 Msun is well described by a Salpeter-like slope, with a fiducial forward-modeled value of $α=1.22^{+0.24}_{-0.22}$ for $dN/d\\log M\\propto M^{-α}$. Together with existing constraints on the initial mass function (IMF) of Sh2-284, the Salpeter-like CMF is consistent with a resemblance between the CMF and IMF shapes in the outer Galaxy environments, suggesting that moderately low metallicity alone does not strongly reshape the high-mass CMF/IMF slope.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.25753",
  "author_total": 7,
  "authors": [
    {
      "name": "Yu Cheng"
    },
    {
      "name": "Jonathan C. Tan"
    },
    {
      "name": "Morten Andersen"
    },
    {
      "name": "Alva Kinman"
    },
    {
      "name": "Rubén Fedriani"
    },
    {
      "name": "Kei E. I. Tanaka"
    },
    {
      "name": "Yichen Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5jksw1cp47vnx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.25753",
  "fulltext_url": null,
  "id": "5jksw1cp47vnx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.25753",
  "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|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W7171714977",
  "pdf_url": "https://arxiv.org/pdf/2607.25753",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5jksw1cp47vnx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2607.25753",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.25753"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Low-Metallicity Star Formation Survey in Sh2-284 (LZ-STAR): The Core Mass Function",
  "title_text": "Low-Metallicity Star Formation Survey in Sh2-284 (LZ-STAR): The Core Mass Function",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/5jksw1cp47vnx",
  "venue": "arXiv",
  "versions": []
}