{
  "abstract": "Massive moons around rocky exoplanets are expected outcomes of giant impacts, yet no exomoon has been securely confirmed. We address this problem using meshless finite-mass (MFM) simulations of giant impacts between differentiated rocky planets that include stellar tidal and Coriolis forces in a local corotating frame for orbital periods of 1–300 days, and compare these simulations with otherwise identical collisions in isolation. We find that stellar perturbations impose a severe formation-stage bottleneck on moon-forming disks. Ultra-short-period impacts leave essentially no surviving circumplanetary disk (CPD), whereas 10 day systems retain only strongly depleted, radially truncated, and dynamically compact disks. High impact velocities, expected for close-in planets, are devastating for disk generation, while retrograde impacts can slightly compensate for disk mass depletion. These results show that stellar perturbations can suppress exomoon formation around close-in rocky planets, reshaping expectations for the demographics of exomoons.",
  "abstract_shown": true,
  "affiliations": [
    "Chengdu University of Technology",
    "Chinese Academy of Sciences",
    "University of Zurich",
    "University of Bern",
    "Sun Yat-sen University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Rongxi Bi",
      "orcid": "0009-0003-1435-4977"
    },
    {
      "affs": [
        1
      ],
      "name": "Hongping Deng",
      "orcid": "0000-0001-6858-1006"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Christian Reinhardt",
      "orcid": "0000-0002-4535-3956"
    },
    {
      "affs": [
        4
      ],
      "name": "Shangfei Liu",
      "orcid": "0000-0002-9442-137X"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yun Liu",
      "orcid": "0000-0003-1000-143X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7rbmevsn7hfm2.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea8fc",
  "fulltext_url": null,
  "id": "7rbmevsn7hfm2",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea8fc",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "astronomy/general"
    ],
    [
      "openalex",
      "3103|Astro and Planetary Science"
    ]
  ],
  "openalex": "W7196974142",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea8fc/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/7rbmevsn7hfm2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.3847/1538-4357/aea8fc",
      "source": "feed-iop",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea8fc"
    },
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea8fc",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea8fc"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Astro and Planetary Science",
      "subfield": "planetary"
    }
  ],
  "title": "A Formation-stage Bottleneck for Exomoons around Close-in Rocky Planets",
  "title_text": "A Formation-stage Bottleneck for Exomoons around Close-in Rocky Planets",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/7rbmevsn7hfm2",
  "venue": "The Astrophysical Journal",
  "versions": []
}