{
  "abstract": "Recent observations have revealed intriguing offsets between the UV and FIR emission in high redshift galaxies. In this study, we use the First Light And Reionisation Epoch Simulations (\\textsc{Flares}) to compute the spatial offset of ultraviolet (UV) and far-infrared (FIR) centres for a statistical sample (6890) of massive (M$_{\\star}\\, \\gtrsim10^{9} \\,{\\rm M_{\\odot}}$) high redshift galaxies ($z \\in [5,10]$). The galaxies are post-processed with the \\textsc{skirt} radiative transfer code, to obtain the full spectral energy distribution and surface brightness profile. We simulate \\textit{James Webb Space Telescope (JWST)} Near Infrared Camera (NIRCam; rest-frame 1500 Å, $ \\approx 0.031 ''$ resolution) and ALMA rest-frame 158 \\um\\ ($\\approx$ $0.3''$ angular resolution) observations of the galaxies and then calculate the distance between the UV-FIR centres to analyse which physical processes drive the observed UV - FIR spatial offset. We find that $\\sim16.23\\%$ of galaxies exhibit spatial offsets of $\\geq 2.5$ kpc between their UV and FIR emission peaks. We establish that the spatial offsets do not correlate with stellar mass, UV/FIR luminosity, and size. Offsets also do not correlate with AGN feedback or with large-scale environment or merger history. Galaxies with significant offsets preferentially have bluer UV slopes ($-2.5<β<-1.5$), consistent with recent star formation and dust-attenuated cores displacing the observed UV centroid. They show an accelerated star formation history, forming half their $z=5$ stellar mass $\\sim$0.1 Gyr earlier than galaxies without offsets. These galaxies are enriched earlier than galaxies without an offset and show enhanced stellar metallicities, indicating a transition to an outward growth at higher redshifts ($z \\geq 6$).",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.27370",
  "author_total": 11,
  "authors": [
    {
      "name": "Paurush Punyasheel"
    },
    {
      "name": "Aswin P. Vijayan"
    },
    {
      "name": "William J. Roper"
    },
    {
      "name": "Thomas R. Greve"
    },
    {
      "name": "Hiddo Algera"
    },
    {
      "name": "Christopher C. Lovell"
    },
    {
      "name": "Steven Gillman"
    },
    {
      "name": "Bitten Gullberg"
    },
    {
      "name": "Shihong Liao"
    },
    {
      "name": "Robert M. Yates"
    },
    {
      "name": "Stephen M. Wilkins"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7e28efk39j6yc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.27370",
  "fulltext_url": null,
  "id": "7e28efk39j6yc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.27370",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.27370",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7e28efk39j6yc.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:58Z",
      "native_id": "2605.27370",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.27370"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "First Light and Reionization Epoch Simulations (FLARES) XXII: UV-dust spatial offsets at the Epoch of Reionisation",
  "title_text": "First Light and Reionization Epoch Simulations (FLARES) XXII: UV-dust spatial offsets at the Epoch of Reionisation",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:17Z",
  "url": "https://research.draconitic.com/paper/7e28efk39j6yc",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1093/mnras/stag1953",
      "pid": "8rgd70ef908xr",
      "relation": "published-as",
      "title": "First Light and Reionization Epoch Simulations (FLARES) XXII: UV-dust spatial offsets at the Epoch of Reionisation",
      "venue": "Monthly Notices of the Royal Astronomical Society"
    }
  ]
}