{
  "abstract": "JWST's Little Red Dots (LRDs) display a unique constellation of features that do not occur simultaneously in any other class of galaxies or AGN. Here we observe that many of these features find parallels in the 19th century Great Eruption (GE) of $η$ Carinae and a sub-class of supernovae (Type IIn). Drawing on these stellar phenomena -- outflows trapped by dense circumstellar gas envelopes -- we sketch a possible scenario for LRDs. Outflows from the central engine produce an enshrouding envelope of gas that may be thought of as a slow wind. This dense wind and its enormous extent produce an opacity so high that a pseudo-photosphere forms within the wind, obscuring the central engine and manifesting as a blackbody-like continuum. Radiation from the buried engine powers the system. The engine may also launch fast winds that crash into the existing envelope to generate shocks. Lines form within the wind above the photosphere -- electron scattering and absorption in the clumpy (ionized + neutral) medium account for broad wings and P-Cygni cores. A key implication is that inferences of ``overmassive black holes\" may be interpreting this wind-like physics as a virial broad-line region. We propose an escape velocity argument to constrain the mass of the engine, which yields $M<10^{5} M_\\odot$ for the typical LRD. The lack of variability and low surface gravity of the photosphere provide further support for intermediate mass ($M\\approx10^{3-6} M_\\odot$), but very luminous super-Eddington ($L_{\\rm{bol}}/L_{\\rm{edd}}\\gtrsim5$) systems harboring a supermassive star or intermediate mass black hole. Paralleling the evolution of IIn SNe, dust production in the envelope may mark the beginnings of classical AGN. This paper explores a possible self-consistent explanation for the entire life-cycle of LRDs, from their enshrouding in dense gas to their fates as seeds of massive black holes.",
  "abstract_shown": true,
  "affiliations": [
    "Institute for Astronomy , University of Hawai'i , 2680 Woodlawn Drive , Honolulu , HI 96822 , USA",
    "MIT Kavli Institute for Astrophysics and Space Research , 70 Vassar Street , Cambridge , MA 02139 , USA",
    "Institute of Science and Technology Austria (ISTA) , Am Campus 1 , 3400 Klosterneuburg , Austria",
    "Department of Astronomy & Astrophysics , University of Chicago , 5640 S Ellis Avenue , Chicago , IL 60637 , USA",
    "Kavli Institute for Cosmological Physics , University of Chicago , Chicago IL 60637 , USA",
    "Cosmic Frontier Center , The University of Texas at Austin , Austin , TX 78712 , USA",
    "Department of Astronomy , The University of Texas at Austin , Austin , TX , USA",
    "Institute for Astronomy , University of Hawai'i , 640 N Aohoku Place , Hilo , HI 96720 , USA",
    "Department of Astrophysical Sciences , Princeton University , Princeton , NJ 08544 , USA",
    "Steward Observatory , University of Arizona , 933 North Cherry Avenue , Tucson , AZ 85721-0065 , USA",
    "Department of Astronomy , University of Geneva , Chemin Pegasi 51 , 1290 Versoix , Switzerland and"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 23,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Rohan P. Naidu",
      "orcid": "0000-0003-3997-5705"
    },
    {
      "affs": [
        2
      ],
      "name": "Jorryt Matthee",
      "orcid": "0000-0003-2871-127X"
    },
    {
      "name": "Anna de Graaff",
      "orcid": "0000-0002-2380-9801"
    },
    {
      "affs": [
        2
      ],
      "name": "Alberto Torralba",
      "orcid": "0000-0001-5586-6950"
    },
    {
      "name": "Chris Ashall",
      "orcid": "0000-0002-5221-7557"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Harley Katz",
      "orcid": "0000-0003-1561-3814"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "John Chisholm",
      "orcid": "0000-0002-0302-2577"
    },
    {
      "name": "Gabriel Brammer",
      "orcid": "0000-0003-2680-005X"
    },
    {
      "name": "Luc Dessart",
      "orcid": "0000-0003-0599-8407"
    },
    {
      "name": "Anna–Christina Eilers",
      "orcid": "0000-0003-2895-6218"
    },
    {
      "name": "Raphael E. Hviding",
      "orcid": "0000-0002-4684-9005"
    },
    {
      "affs": [
        7
      ],
      "name": "David O. Jones"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "Vasily Kokorev",
      "orcid": "0000-0002-5588-9156"
    },
    {
      "name": "Joel Leja",
      "orcid": "0000-0001-6755-1315"
    },
    {
      "affs": [
        8
      ],
      "name": "Hanpu Liu",
      "orcid": "0000-0003-2488-4667"
    },
    {
      "affs": [
        1
      ],
      "name": "Zhaoran Liu",
      "orcid": "0009-0002-8965-1303"
    },
    {
      "name": "Devesh Nandal",
      "orcid": "0000-0003-1927-4397"
    },
    {
      "name": "Pascal A. Oesch",
      "orcid": "0000-0001-5851-6649"
    },
    {
      "affs": [
        9
      ],
      "name": "C. L. Ransome",
      "orcid": "0000-0003-4175-4960"
    },
    {
      "name": "Robert A. Simcoe",
      "orcid": "0000-0003-3769-9559"
    },
    {
      "affs": [
        1
      ],
      "name": "Wendy Q. Sun",
      "orcid": "0009-0007-3791-7890"
    },
    {
      "affs": [
        10
      ],
      "name": "Andrea Weibel",
      "orcid": "0000-0001-8928-4465"
    },
    {
      "affs": [
        10
      ],
      "name": "Mengyuan Xiao",
      "orcid": "0000-0003-1207-5344"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5snfc2s84f89p.bib",
  "cited_by": 28,
  "doi": "10.48550/arxiv.2606.30711",
  "fulltext_url": null,
  "id": "5snfc2s84f89p",
  "issns": [
    "2331-8422"
  ],
  "landing_url": "https://arxiv.org/abs/2606.30711",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
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  "openalex": "W7166850264",
  "pdf_url": "https://arxiv.org/pdf/2606.30711",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-29",
  "publisher": "Cornell University",
  "ris": "https://research.draconitic.com/paper/5snfc2s84f89p.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:44Z",
      "native_id": "W7166850264",
      "source": "openalex",
      "url": "https://arxiv.org/abs/2606.30711"
    }
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Astrophysical Phenomena and Observations",
      "subfield": "general"
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  ],
  "title": "Little Red Dots as Intermediate Mass, Super-Eddington Engines: Insights from Type IIn Supernovae and The 1837-1856 Great Eruption of $η$ Carinae",
  "title_text": "Little Red Dots as Intermediate Mass, Super-Eddington Engines: Insights from Type IIn Supernovae and The 1837-1856 Great Eruption of η Carinae",
  "type": "preprint",
  "updated_at": "2026-11-08T13:20:38Z",
  "url": "https://research.draconitic.com/paper/5snfc2s84f89p",
  "venue": "arXiv (Cornell University)",
  "versions": []
}