{
  "abstract": "We present a multiwavelength analysis of the star $ρ$ Oph C, covering X-ray, optical, near-infrared, and radio observations to test for the presence of interferometrically-detected cool star companions. The X-ray observations from Chandra, XMM-Newton, and NuSTAR show flare-like events lasting minutes or days in time and spectral properties consistent with those of cooler stars instead of the primary magnetic B star. The near-infrared data is also consistent with the proposed trinary system properties due to the presence of CO-band heads. After removing the primary B star's rotation, the optical data from TESS shows a residual signal at the level of 0.8 mmags, matching the variations expected from cool stars in orbit around a bright B star. Finally, multi-epoch radio data reveals that $ρ$ Oph C exhibits significant large scale flux variations that are atypical for a magnetic massive star. Taken as a whole, the multi-epoch and -wavelength data presents a consistent picture of $ρ$\\,Oph\\,C as a rare trinary system composed of a hot star and two cool stars.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29809",
  "author_total": 11,
  "authors": [
    {
      "name": "Sean J. Gunderson"
    },
    {
      "name": "Walter W. Golay"
    },
    {
      "name": "Jackson Codd"
    },
    {
      "name": "David P. Huenemoerder"
    },
    {
      "name": "Felipe Navarete"
    },
    {
      "name": "Christiana Erba"
    },
    {
      "name": "Alexandrea Moreno"
    },
    {
      "name": "John M. Cannon"
    },
    {
      "name": "Richard Ignace"
    },
    {
      "name": "Pragati Pradhan"
    },
    {
      "name": "the MACRO consortium"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cx7yvm83s1chg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29809",
  "fulltext_url": null,
  "id": "cx7yvm83s1chg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29809",
  "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.HE"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7214386361",
  "pdf_url": "https://arxiv.org/pdf/2609.29809",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cx7yvm83s1chg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:11Z",
      "native_id": "2609.29809",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29809"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "A Multiwavelength View of $ρ$ Oph II: Disentangling the Variability of the Multi-Star Component C",
  "title_text": "A Multiwavelength View of ρ Oph II: Disentangling the Variability of the Multi-Star Component C",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:11Z",
  "url": "https://research.draconitic.com/paper/cx7yvm83s1chg",
  "venue": "arXiv",
  "versions": []
}