{
  "abstract": "We present JWST/NIRSpec IFU spectroscopy of the central $618\\times618$ pc$^2$ ($\\sim3''\\times3''$) of NGC 4696, the BCG in the Centaurus cluster. Leveraging the $\\sim0.1''$ ($20.6$ pc) pixel size of JWST, we resolve a compact circumnuclear rotating disk (radius of $\\sim120$ pc) traced by Pa$α$ and H$_2$ 1$-$0 S(1) emission, which allows a reassessment of the AGN position based on the kinematic centre of this disk. A central Pa$α$ velocity dispersion reaching $σ\\sim449$ km s$^{-1}$ implies a SMBH mass of $\\sim10^9$ M$_\\odot$, corresponding to a sphere of influence of $r_\\mathrm{inf}\\sim60$ pc, resolved by our observations. Position-velocity diagrams reveal an increase from $\\sim-200$ to $\\sim600$ km s$^{-1}$ on scales of $\\sim150$ pc (a gradient of $4.7$ km s$^{-1}$ pc$^{-1}$) and an accretion rate of $\\sim18$ M$_\\odot$ yr$^{-1}$ feeding the CND. The Pa$α$ emission shows a double-component in the core, with a high-dispersion redshifted component reaching $σ\\sim600$ km s$^{-1}$. In contrast, MUSE H$α$ observations covering the $\\sim10$ kpc-scale filamentary structure recover only weak velocity gradients ($\\lesssim150$ km s$^{-1}$) within $\\sim300\\times300$ pc$^2$ and do not resolve the disk due to larger PSFs and pixel sizes. ALMA CO(2-1) data reveal only compact molecular clumps within a $\\sim410\\times410$ pc$^2$ region, with no extended counterpart to the structures traced by Pa$α$ and H$_2$ 1$-$0 S(1). Stellar kinematics show a smooth velocity field and broad dispersion profile, clearly decoupled from both the multiphase gas and the hot ICM probed by XRISM. These results provide a direct, spatially resolved view of gas dynamics within the inner few hundred parsecs, demonstrating the power of JWST/NIRSpec to probe SMBH feeding.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.07732",
  "author_total": 38,
  "authors": [
    {
      "name": "Mathieu Marquis"
    },
    {
      "name": "Julie Hlavacek-Larrondo"
    },
    {
      "name": "Olivia Pereira"
    },
    {
      "name": "Michael Reefe"
    },
    {
      "name": "Hyunseop Choi"
    },
    {
      "name": "Jorge Barrera-Ballesteros"
    },
    {
      "name": "Benjamin Vigneron"
    },
    {
      "name": "Ming Sun"
    },
    {
      "name": "Rebecca E.A Canning"
    },
    {
      "name": "Gregory Taylor"
    },
    {
      "name": "Loïc Albert"
    },
    {
      "name": "Francesco d'Eugenio"
    },
    {
      "name": "Megan Donahue"
    },
    {
      "name": "Andrew C Fabian"
    },
    {
      "name": "Gary J Ferland"
    },
    {
      "name": "John S Gallagher"
    },
    {
      "name": "Marie-Lou Gendron-Marsolais"
    },
    {
      "name": "Pierre Guillard"
    },
    {
      "name": "Minghao Guo"
    },
    {
      "name": "Nina Hatch"
    },
    {
      "name": "Ralf Kotulla"
    },
    {
      "name": "Yuan Li"
    },
    {
      "name": "Roberto Maiolino"
    },
    {
      "name": "Allison Man"
    },
    {
      "name": "Michael A Mcdonald"
    },
    {
      "name": "Brian R Mcnamara"
    },
    {
      "name": "Valeria Olivares"
    },
    {
      "name": "Marine Prunier"
    },
    {
      "name": "Christopher S Reynolds"
    },
    {
      "name": "Carter Rhea"
    },
    {
      "name": "Annabelle Richard-Laferrière"
    },
    {
      "name": "Helen R Russell"
    },
    {
      "name": "Philippe Salomé"
    },
    {
      "name": "Prathamesh Tamhane"
    },
    {
      "name": "Auriane Thilloy"
    },
    {
      "name": "Grant R Tremblay"
    },
    {
      "name": "G. Mark Voit"
    },
    {
      "name": "Stephen A Walker"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8d1kdz5qrxym7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.07732",
  "fulltext_url": null,
  "id": "8d1kdz5qrxym7",
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  "landing_url": "https://hal.science/hal-05742528v1",
  "language": "en",
  "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": [
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      "arxiv",
      "astro-ph.GA"
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      "0.phys"
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      "hal",
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      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
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  "openalex": "W7202210676",
  "pdf_url": "https://arxiv.org/pdf/2608.07732",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8d1kdz5qrxym7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "hal-05742528",
      "source": "hal",
      "url": "https://hal.science/hal-05742528v1"
    },
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2608.07732",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.07732"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Mapping gas accretion and stellar kinematics to sub-kiloparsec scales in NGC 4696 with JWST/NIRSpec",
  "title_text": "Mapping gas accretion and stellar kinematics to sub-kiloparsec scales in NGC 4696 with JWST/NIRSpec",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/8d1kdz5qrxym7",
  "venue": "HAL",
  "versions": []
}