{
  "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 orb = 89.29 ± 0.19 days, e = 0.53 9 − 0.037 + 0.040 , and a 1 sin i / c = 145 . 6 − 3.4 + 3.7 s , corresponding to K 1 = 42 . 2 − 1.8 + 2.2 km s − 1 and f ( M ) = 0.41 6 − 0.028 + 0.032 M ⊙ . 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 ± 0.19 M ⊙ and R ₁ = 2.65 ± 0.23 R ⊙ . The mass function implies a formal edge-on minimum companion mass of approximately 1.80 M ⊙ . Assuming a luminous main-sequence companion and including the noneclipsing geometry gives M 2 = 2.1 9 − 0.34 + 1.24 M ⊙ and i = 61 . 5 − 19.6 + 16.6 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": [
    "Xinjiang Astronomical Observatory",
    "Instituto de Astrofísica de Andalucía—CSIC",
    "University of Chinese Academy of Sciences",
    "Chinese Academy of Sciences South America Center for Astronomy"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Chenglong Lv",
      "orcid": "0000-0001-6354-1646"
    },
    {
      "affs": [
        1
      ],
      "name": "J. Pascual-Granado",
      "orcid": "0000-0003-0139-6951"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Ali Esamdin",
      "orcid": "0000-0003-1845-4900"
    },
    {
      "affs": [
        1
      ],
      "name": "Angela Gardini",
      "orcid": "0000-0002-3234-9130"
    },
    {
      "affs": [
        3
      ],
      "name": "Haozhi Wang",
      "orcid": "0000-0002-2463-4943"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Jianwei Yao",
      "orcid": "0009-0000-2772-2677"
    },
    {
      "affs": [
        0
      ],
      "name": "Shuguo Ma",
      "orcid": "0000-0001-5066-5682"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1cjrsynfpkw9w.bib",
  "cited_by": 1,
  "doi": "10.3847/1538-4357/aea560",
  "fulltext_url": null,
  "id": "1cjrsynfpkw9w",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea560",
  "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": [
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
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  "openalex": "W7216243009",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea560/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/1cjrsynfpkw9w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea560",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea560"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Stellar, planetary, and galactic studies",
      "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": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/1cjrsynfpkw9w",
  "venue": "The Astrophysical Journal",
  "versions": [
    {
      "doi": "10.48550/arxiv.2610.00062",
      "pid": "7hz42a8a8v45e",
      "relation": "preprint",
      "title": "Asteroseismic Detection of a Massive Unseen Companion to the $δ$ Scuti Star TIC 160582982",
      "venue": "arXiv"
    }
  ]
}