{
  "abstract": "This study analyzes spectra from the central region of the galaxy cluster Abell 85 observed with GTC/OSIRIS, focusing on the cD galaxy Holm 15A and the point-like X-ray source SDSS J004150.75-091824.3, projected $13.74\\arcsec$ from Holm 15A. For the latter, we found it is a background quasar with a redshift of $1.56386 \\pm 0.00397$, ruling out the possibility of it being a rogue BH gravitationally bound to Holm 15A. In addition, using single-epoch spectroscopy, we report that the quasar J004150 hosts a Supermassive Black Hole (SMBH) with a mass of $\\log(M_{\\text{BH}}/\\mathrm{M_{\\odot}}) = 8.72 \\pm 0.26$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Research Notes of the AAS, Volume 10, Number 10, Published October 2026",
  "arxiv": "2611.05316",
  "author_total": 4,
  "authors": [
    {
      "name": "Emmanuel Ríos-López"
    },
    {
      "name": "Omar López-Cruz"
    },
    {
      "name": "Ana Luisa González-Morán"
    },
    {
      "name": "Christopher Añorve"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/548yweypr0hwa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05316",
  "fulltext_url": null,
  "id": "548yweypr0hwa",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05316",
  "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.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05316",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/548yweypr0hwa.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.05316",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05316"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Black Hole Mass Estimation of a Background Quasar in the Vicinity of the cD Galaxy Holm 15A",
  "title_text": "Black Hole Mass Estimation of a Background Quasar in the Vicinity of the cD Galaxy Holm 15A",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/548yweypr0hwa",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/2515-5172/aeb6c0",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}