{
  "abstract": "We present TIC 160582982, an eccentric $δ$ Scuti binary with a dynamically massive unseen companion. Six coherent high-frequency pressure modes used as pulsation clocks yield a phase-modulation orbit with $P_{\\rm orb}=89.29\\pm0.19$ d, $e=0.539^{+0.040}_{-0.037}$, and $a_1\\sin i/c=145.6^{+3.7}_{-3.4}$ s, corresponding to $K_1=42.2^{+2.2}_{-1.8}$ km s$^{-1}$ and $f(M)=0.416^{+0.032}_{-0.028}\\,M_\\odot$. An independent frequency-modulation analysis of the two strongest modes gives a consistent orbital solution. Rotating MIST isochrones constrained by the atmospheric parameters and spectral energy distribution (SED) give $M_1=1.93\\pm0.19\\,M_\\odot$ and $R_1=2.65\\pm0.23\\,R_\\odot$. The mass function implies a formal edge-on minimum companion mass of approximately $1.80\\,M_\\odot$. Assuming a luminous main-sequence companion and including the non-eclipsing geometry gives $M_2=2.19^{+1.24}_{-0.34}\\,M_\\odot$ and $i=61.5^{+16.6}_{-19.6}$ deg. However, no clear evidence for the presence of a luminous counterpart is found, either photometrically or spectroscopically. This suggests the presence of a massive compact object, such as a neutron star or even a stellar-mass black hole, as the massive unseen binary companion. Future phase-resolved high-resolution spectroscopy will be crucial for obtaining an independent orbital constraint and clarifying the nature of the companion.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: 2026, ApJ, 1010, 199",
  "arxiv": "2610.00062",
  "author_total": 7,
  "authors": [
    {
      "name": "Chenglong Lv"
    },
    {
      "name": "J. Pascual-Granado"
    },
    {
      "name": "Ali Esamdin"
    },
    {
      "name": "Angela Gardini"
    },
    {
      "name": "Haozhi Wang"
    },
    {
      "name": "Jianwei Yao"
    },
    {
      "name": "Shuguo Ma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7hz42a8a8v45e.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.00062",
  "fulltext_url": null,
  "id": "7hz42a8a8v45e",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.00062",
  "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.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.00062",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7hz42a8a8v45e.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:32Z",
      "native_id": "2610.00062",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.00062"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Asteroseismic Detection of a Massive Unseen Companion to the $δ$ Scuti Star TIC 160582982",
  "title_text": "Asteroseismic Detection of a Massive Unseen Companion to the δ Scuti Star TIC 160582982",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:28Z",
  "url": "https://research.draconitic.com/paper/7hz42a8a8v45e",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/1538-4357/aea560",
      "pid": "1cjrsynfpkw9w",
      "relation": "published-as",
      "title": "Asteroseismic Detection of a Massive Unseen Companion to the δ Scuti Star TIC 160582982",
      "venue": "The Astrophysical Journal"
    }
  ]
}