{
  "abstract": "We present a spectral analysis of diffuse Galactic background emission using SPHEREx data in a pilot Galactic-plane field, where uncertainty in the estimation of the diffuse infrared background is a major source of systematic uncertainty in extinction studies at near- and mid-infrared wavelengths. We construct channel-resolved background maps across the 0.75--5~$μ$m range using a Large Median Filter approach and then carry the extinction analysis forward only for the cleaner long-wavelength subset at $λ\\geq 3~μ$m. In the present field, comparison against an earlier masked-median background model gives a median channel-by-channel background difference of about 6\\% and a maximum change of $|Δτ_{\\rm norm}|\\simeq 7.4$ near 3.205~$μ$m, underscoring the importance of wavelength-dependent background modeling. These results demonstrate that spectral mapping with SPHEREx provides a practical framework for controlling diffuse background systematics and enables improved constraints on dust opacity and extinction in the Galactic plane.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04780",
  "author_total": 4,
  "authors": [
    {
      "name": "Wanggi Lim"
    },
    {
      "name": "Jae Hwan Kang"
    },
    {
      "name": "Keunho J. Kim"
    },
    {
      "name": "Young-Jun Kim"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/91rekgmj9mhb4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04780",
  "fulltext_url": null,
  "id": "91rekgmj9mhb4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04780",
  "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",
      "3103|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W7220731162",
  "pdf_url": "https://arxiv.org/pdf/2610.04780",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/91rekgmj9mhb4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04780",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04780"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Diffuse Galactic Backgrounds with SPHEREx: A Pilot Study of Background Modeling and Its Impact on Extinction",
  "title_text": "Diffuse Galactic Backgrounds with SPHEREx: A Pilot Study of Background Modeling and Its Impact on Extinction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/91rekgmj9mhb4",
  "venue": "arXiv",
  "versions": []
}