{
  "abstract": "We analyze the spiral morphology of 1,738 nearby galaxies with similar Hubble type of the Milky Way ($i<60^\\circ$, $z<0.048$) using multi-band optical images from the Sloan Digital Sky Survey and Digitized Sky Survey. Multiple-arm systems dominate, comprising $\\sim$50-60% of the sample and $\\sim$75% of large galaxies ($d_{\\rm max} \\geqslant 18~\\mathrm{kpc}$). In $90\\pm3$% of multiple-arm galaxies, two inner arms extend into multiple outer arms; three-arm inner structures occur in $9\\pm2$%, and four or more are rare ($<1$%). Morphology and inner-arm counts are consistent across bands at $\\sim$80%. Bifurcation points, marking the transition from two inner arms to multiple outer arms, occur in up to $\\sim$40% of galaxies, are more prominent in bluer bands tracing younger stellar populations, and cluster within 4-7~kpc of galaxy centers. These statistics suggest that the Milky Way's inner two-arm and outer multiple-arm morphology, including bifurcations at similar radii, is broadly consistent with that of a typical multiple-arm spiral galaxy.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.34189",
  "author_total": 8,
  "authors": [
    {
      "name": "Zehao Lin"
    },
    {
      "name": "Junye Wei"
    },
    {
      "name": "Ye Xu"
    },
    {
      "name": "Yingjie Li"
    },
    {
      "name": "Chaojie Hao"
    },
    {
      "name": "Dejian Liu"
    },
    {
      "name": "Yiwei Dong"
    },
    {
      "name": "Zhen-yu Wu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9fgpj2a0sqp0t.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.34189",
  "fulltext_url": null,
  "id": "9fgpj2a0sqp0t",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.34189",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.34189",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9fgpj2a0sqp0t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.34189",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.34189"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Morphological Statistic of Milky Way-like Galaxies",
  "title_text": "Morphological Statistic of Milky Way-like Galaxies",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/9fgpj2a0sqp0t",
  "venue": "arXiv",
  "versions": []
}