{
  "abstract": "We investigate the link between dust obscuration and star formation rate (SFR) estimators using Hα luminosities, LHα and radio luminosities, Lradio. While the Balmer Decrement (BD) is the standard tool for attenuating Hα, it can fail to account for optically thick dust regions from which Hα cannot escape. The ratio of SFRs estimated from radio luminosity and LHα corrected for dust attenuation using the BD can be used as a probe of the degree of optically thick dust affecting Hα. We explore this combining Evolutionary Map of the Universe (EMU) Early Science data at 887.5 MHz in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data. We draw on dust estimates using both the BD and the dust mass, Md, demonstrating systematic underlying dependencies with Lradio/LHα. By combining the BD and Md, we quantify how they relate to Lradio/LHα and other galaxy properties. We use this approach to establish an Hα SFR (SFRHα) estimator that accounts for optically thick dust, demonstrating its consistency with conventional SFR indicators. Rather than proposing a replacement for standard correction methods, we aim to demonstrate the effectiveness of a dust geometry model that integrates both BD and Md parameters. This Hdust parameter provides a more physically complete representation of optically thick environments that traditional methods may overlook, and can produce SFR estimates consistent with traditional techniques.",
  "abstract_shown": true,
  "affiliations": [
    "School of Mathematical and Physical Sciences, 12 Wally’s Walk, Macquarie University , NSW 2109 ,",
    "School of Chemistry, and Physics, Faculty of Science, Queensland University of Technology , Brisbane, QLD 4000 ,",
    "University of Southern Queensland, Centre for Astrophysics , West Street, Toowoomba, QLD 4350",
    "Astrophysics Group, School of Physics, University of Bristol , Tyndall Ave, Bristol BS8 1TL ,",
    "University of Wisconsin-Madison Department of Physics, , Madison, WI 53706-1390 ,",
    "University of Louisville Department of Physics and Astronomy, , Natural Science Building 102, Louisville, KY 40292 ,",
    "Ruhr-Universität Bochum, Astronomisches Institut , Universitätsstr 150 / GAFO03, 44801 Bochum ,",
    "Centre of Excellence for Data Science, AI, and Modelling (DAIM) , University of Hull, Cottingham Road, Kingston-upon-Hull, HU6 7RX ,",
    "Hamburger Sternwarte, Universität Hamburg , Gojenbergsweg 112, 21029 Hamburg ,",
    "International Centre for Radio Astronomy Research, University of Western Australia , 7 Fairway, Crawley, WA 6009 ,",
    "Research School of Astronomy & Astrophysics, The Australian National University , Mt Stromlo Observatory D.115, Cotter Rd, Weston Creek, ACT 2611 ,",
    "ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO-3D) ,",
    "University of Calgary Department of Physics and Astronomy, , Calgary, Alberta, T2N 1N4 ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "U T Ahmed",
      "orcid": "0000-0002-0309-1599"
    },
    {
      "affs": [
        0
      ],
      "name": "A M Hopkins"
    },
    {
      "affs": [
        1
      ],
      "name": "B Farley"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "M Cowley",
      "orcid": "0000-0002-4653-8637"
    },
    {
      "affs": [
        3
      ],
      "name": "S Phillipps",
      "orcid": "0000-0001-5991-3486"
    },
    {
      "affs": [
        4
      ],
      "name": "Y A Gordon"
    },
    {
      "affs": [
        5
      ],
      "name": "B W Holwerda",
      "orcid": "0000-0002-4884-6756"
    },
    {
      "affs": [
        6
      ],
      "name": "D J Bomans"
    },
    {
      "affs": [
        7
      ],
      "name": "K A Pimbblet",
      "orcid": "0000-0002-3963-3919"
    },
    {
      "affs": [
        8
      ],
      "name": "S Casura",
      "orcid": "0000-0003-1645-0543"
    },
    {
      "affs": [
        9,
        10,
        11
      ],
      "name": "A Battisti"
    },
    {
      "affs": [
        12
      ],
      "name": "D A Leahy"
    },
    {
      "affs": [
        0
      ],
      "name": "J Prathap"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/87zj7fh31s9pk.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag2106",
  "fulltext_url": null,
  "id": "87zj7fh31s9pk",
  "issns": [
    "0035-8711",
    "1365-2966"
  ],
  "landing_url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2106/9013655",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [],
  "openalex": null,
  "pdf_url": "https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stag2106/73135208/stag2106.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/87zj7fh31s9pk.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T00:21:01Z",
      "native_id": "10.1093/mnras/stag2106",
      "source": "crossref",
      "url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2106/9013655"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "EMU/GAMA: Understanding the link between dust geometry and star formation rate in galaxies",
  "title_text": "EMU/GAMA: Understanding the link between dust geometry and star formation rate in galaxies",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T00:21:01Z",
  "url": "https://research.draconitic.com/paper/87zj7fh31s9pk",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": []
}