{
  "abstract": "We present a multi-wavelength study of the massive protocluster G286.21+0.17 (G286) using \\emph{JWST} near-infrared (NIR) imaging and ALMA H$^{13}$CO$^{+}$(1--0) observations. The \\emph{JWST} images uncover a compact ($\\sim$0.5 pc) hub-filament system (HFS), comprising a dense central hub connected by at least four converging filaments seen in absorption, along with multiple H$_2$ protostellar jets/outflows. The hub hosts the dense core G286c1. H$^{13}$CO$^{+}$ emission confirms this HFS over [$-$19.2, $-$16.4]~km~s$^{-1}$, while the \\emph{JWST} images also trace prominent photodissociation regions surrounding H\\,{\\sc ii}~region~A, powered by a B-type star. The identified H$^{13}$CO$^{+}$ skeletons closely trace the major \\emph{JWST} absorption structures and show steep velocity gradients indicative of inflow. The radial distribution of ALMA 1.3 mm continuum cores (ALMAGAL and Cheng et al. 2020) exhibits power-law trends toward the hub center. The core number density, surface density, and core mass follow $Y \\propto r^α$ with $α_ρ$ $\\sim$$-$2.8 to $-$1.1, $α_Σ$ $\\sim$$-$0.4 to $-$0.6, and $α_M$ $\\sim$$-$0.7, whereas the core diameter remains nearly constant. Together with filament mass accretion rates of 7.6--11$\\times10^{-5}$ M$_\\odot$ yr$^{-1}$, these results are consistent with competitive accretion, highlighting preferential core growth toward the hub. Increasing filament linewidths toward the hub imply gravity-driven inflow, but misaligned local velocity gradient and gravitational force directions along filaments point to a dynamically evolved system. The HFS likely formed through large-scale gas-layer interactions aided by compression from the adjacent H\\,{\\sc ii} region. Overall, star formation in G286 appears to be regulated by filamentary accretion, competitive core growth in the hub, and stellar feedback.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.14693",
  "author_total": 20,
  "authors": [
    {
      "name": "L. K. Dewangan"
    },
    {
      "name": "N. K. Bhadari"
    },
    {
      "name": "Ram K. Yadav"
    },
    {
      "name": "A. K. Maity"
    },
    {
      "name": "O. R. Jadhav"
    },
    {
      "name": "Kee-Tae Kim"
    },
    {
      "name": "Paul F. Goldsmith"
    },
    {
      "name": "A. Saha"
    },
    {
      "name": "Dana Alina"
    },
    {
      "name": "Chang Won Lee"
    },
    {
      "name": "Saurabh Sharma"
    },
    {
      "name": "Tie Liu"
    },
    {
      "name": "Patricio Sanhueza"
    },
    {
      "name": "Tapas Baug"
    },
    {
      "name": "E. Sharma"
    },
    {
      "name": "Fengwei Xu"
    },
    {
      "name": "Ariful Hoque"
    },
    {
      "name": "James O. Chibueze"
    },
    {
      "name": "Dana Makarova"
    },
    {
      "name": "Wenyu Jiao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b8g23tx8hf809.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.14693",
  "fulltext_url": null,
  "id": "b8g23tx8hf809",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.14693",
  "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/2605.14693",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b8g23tx8hf809.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2605.14693",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.14693"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Discovery of a Compact Hub-Filament System in G286.21+0.17 with JWST and ALMA: Insights into Protocluster Formation and Competitive Accretion",
  "title_text": "Discovery of a Compact Hub-Filament System in G286.21+0.17 with JWST and ALMA: Insights into Protocluster Formation and Competitive Accretion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/b8g23tx8hf809",
  "venue": "arXiv",
  "versions": []
}