{
  "abstract": "Giant Star-forming Clumps (GSFCs) are kpc-scale regions of enhanced star-formation with stellar masses of $10^6$ to $10^{10}\\,M_\\odot$ that are commonly observed in high-redshift ($z \\gtrsim 1$) galaxies but their formation and role in galaxy evolution remain unclear. We applied a Faster R-CNN object detection framework (FRCNN) to identify star-forming clumps in astrophysical imaging data from a mass-complete sample of $\\sim$210,000 low-redshift galaxies ($z\\lesssim0.32$), located in the HSC-SSP Wide and Deep fields observed by the Hyper Suprime-Cam Subaru Strategic Survey (HSC-SSP) and CFHT Large Area U-band Deep Survey (CLAUDS). We present a population of $\\sim$710,000 detected clumps for which we measured the (u)grizy-photometry and derived the physical properties (stellar mass, age, dust extinction and star-formation rate) for each clump by fitting the photometric data to stellar population models. We estimate that the clump Stellar Mass Function (cSMF) for young clumps ($<100\\,\\mathrm{Myr}$) follows a power law with an exponent of $α=1.98\\pm0.02$ down to a completeness limit of $\\sim10^{8}\\,M_\\odot$ which is consistent with an in situ formation through violent disk instabilities (VDI). The clumps show elevated star-formation rates and negative gradients in their ages and stellar masses as a function of galactocentric distance. These gradients are steeper than those measured for the intra-clump regions of the host galaxies and are robust against uncertainties introduced by different modelling assumptions. For nearby galaxies we argue that the observed low-redshift clumps are likely analogues of high-redshift GSFCs and that the inward migration of star-forming clumps directly contributes to the central bulge formation of the host galaxy.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.20079",
  "author_total": 5,
  "authors": [
    {
      "name": "Jürgen J. Popp"
    },
    {
      "name": "Hugh Dickinson"
    },
    {
      "name": "Stephen Serjeant"
    },
    {
      "name": "Lucy F. Fortson"
    },
    {
      "name": "Vihang Mehta"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/00d49h34zbb82.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.20079",
  "fulltext_url": null,
  "id": "00d49h34zbb82",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.20079",
  "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",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7213586855",
  "pdf_url": "https://arxiv.org/pdf/2609.20079",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/00d49h34zbb82.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.20079",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.20079"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Physical properties of star-forming clumps in nearby galaxies from CLAUDS and HSC-SSP",
  "title_text": "Physical properties of star-forming clumps in nearby galaxies from CLAUDS and HSC-SSP",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/00d49h34zbb82",
  "venue": "arXiv",
  "versions": []
}