{
  "abstract": "Context: HII regions are a key stage of massive star formation, where ionizing radiation reshapes the interstellar medium. Their continuum spectra trace thermal dust, free-free emission, and anomalous microwave emission (AME). Aims: We investigate how these components evolve as an HII region expands and correlate with gas and electron column densities across spatial scales. Methods: We post-process RAMSES radiation-magnetohydrodynamical simulations of a $10^4 M_\\odot$ cloud with POLARIS. The model includes grain charging, rotational excitation and damping, radiative torques, rotational disruption, and emission from dust, ionized gas, and nano-composite grains. We compute maps and SEDs for six snapshots over $1-10^4$ GHz and analyze multi-scale correlations. Results: Ionized emission evolves from a compact, optically thick HII region to an extended, optically thin structure. Around 15 GHz, free-free emission changes from a $ν^2$ to a $ν^{-0.1}$ spectral regime as optical depth decreases, and increasingly traces electron column density. The thermal dust peak shifts from mid- to far-infrared as colder material contributes, while dust emission remains strongly correlated with total gas column density. AME peaks at 26-37 GHz and shows scale-dependent correlations with gas and electron distributions. Rotational disruption is the main dust-destruction mechanism affecting mid-infrared emission and the high-frequency AME tail. Conclusions: These continuum components provide complementary, scale-dependent diagnostics of stellar feedback. Self-consistent multi-frequency modeling is essential for interpreting surveys of star-forming clouds.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.08891",
  "author_total": 6,
  "authors": [
    {
      "name": "Stefan Reissl"
    },
    {
      "name": "Alessio Traficante"
    },
    {
      "name": "Paolo Suin"
    },
    {
      "name": "Alice Nucara"
    },
    {
      "name": "Ralf S. Klessen"
    },
    {
      "name": "Leonardo Testi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4mjfvcpvkk5v3.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.08891",
  "fulltext_url": null,
  "id": "4mjfvcpvkk5v3",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.08891",
  "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"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.08891",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4mjfvcpvkk5v3.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T06:21:04Z",
      "native_id": "2611.08891",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.08891"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Predicting Continuum Emission in Massive Star-Forming Regions with Embedded HII Regions - Dust, Free-Free, and Anomalous Microwave Emission with POLARIS",
  "title_text": "Predicting Continuum Emission in Massive Star-Forming Regions with Embedded HII Regions - Dust, Free-Free, and Anomalous Microwave Emission with POLARIS",
  "type": "preprint",
  "updated_at": "2026-11-10T06:21:04Z",
  "url": "https://research.draconitic.com/paper/4mjfvcpvkk5v3",
  "venue": "arXiv",
  "versions": []
}