{
  "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 simulations of giant impacts between differentiated rocky planets that include stellar tidal and Coriolis forces in a local co-rotating 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, 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": [],
  "article_type": null,
  "arxiv": "2608.04512",
  "author_total": 5,
  "authors": [
    {
      "name": "Rongxi Bi"
    },
    {
      "name": "Hongping Deng"
    },
    {
      "name": "Christian Reinhardt"
    },
    {
      "name": "Shangfei Liu"
    },
    {
      "name": "Yun Liu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d11xsch546e69.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.04512",
  "fulltext_url": null,
  "id": "d11xsch546e69",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.04512",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.EP"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.04512",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d11xsch546e69.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:18Z",
      "native_id": "2608.04512",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.04512"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "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": "preprint",
  "updated_at": "2026-10-30T12:34:18Z",
  "url": "https://research.draconitic.com/paper/d11xsch546e69",
  "venue": "arXiv",
  "versions": []
}