{
  "abstract": "The orientation of a dusty torus within a unified model explains the presence (Type-1) or absence (Type-2) of broad emission lines in Active Galactic Nuclei (AGN) spectra. This orientation-based unified model, however, fails to explain differences in host galaxy properties, such as star formation rates, of Type-1 and Type-2 AGNs. Star-formation histories (SFHs) can shed light on the connection between AGN type and host galaxy properties, but are challenging to extract from Type-1 AGN that outshine their host galaxies. We use mean-field independent component analysis (MFICA) spectrum decomposition to extract the stellar populations of $\\sim$3000 optically selected Type-1 and Type-2 AGN host galaxies from the seventh data release (DR7) of the Sloan Digital Sky Survey (SDSS), matched in redshift ($0.16 \\leq z \\leq 0.4$) and AGN luminosity ($6.5<\\log_{10} [L_{[OIII]}/L_\\odot] <9.5$). Using MFICA, we find that only $\\sim$10 per cent of AGN host galaxies have recently ($\\lesssim1$\\,Gyr) and rapidly quenched star formation following a starburst, with Type-2 AGN host galaxies having done so at most 100\\,Myrs more recently than Type-1 AGN host galaxies. For most ($\\sim$90 per cent) AGN hosts with normal recent star formation histories, Type-2 AGNs are associated with slightly younger stellar populations than Type-1 AGNs. The younger stellar populations of Type-2 AGN hosts can be explained by a link between dusty torus covering factors and stellar populations, by host-galaxy obscuration of AGN, or by an evolution in AGN type without major bursts or rapid quenching of star formation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05353",
  "author_total": 6,
  "authors": [
    {
      "name": "Sahyadri D. Krishna"
    },
    {
      "name": "Vivienne Wild"
    },
    {
      "name": "Paul C. Hewett"
    },
    {
      "name": "Victoria A. Fawcett"
    },
    {
      "name": "Omar Almaini"
    },
    {
      "name": "Carolin Villforth"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1cbcjxjem6h3g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05353",
  "fulltext_url": null,
  "id": "1cbcjxjem6h3g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05353",
  "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.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05353",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1cbcjxjem6h3g.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.05353",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05353"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Beyond just a torus? Re-contextualising the AGN type paradigm using data-driven host galaxy quenching histories",
  "title_text": "Beyond just a torus? Re-contextualising the AGN type paradigm using data-driven host galaxy quenching histories",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/1cbcjxjem6h3g",
  "venue": "arXiv",
  "versions": []
}