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Statistical Modeling of Foreground Galactic Cirrus for Diffuse Halo Light Measurement — arXiv:2611.03172

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.03172
License (as archived): CC0-1.0
Archived: 2026-11-03T11:50:51.260Z
SHA-256 of the archived text: 2ecbefcdd7f467660f6d90343450117866eb28742c4d0a4ad0e3c0a32a04b12d
Stable URL of this page: https://metraipolis.com/documento/dc_287c77a6f18b

How to cite

Statistical Modeling of Foreground Galactic Cirrus for Diffuse Halo Light Measurement — arXiv:2611.03172 — arXiv (en), https://arxiv.org/abs/2611.03172 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_287c77a6f18b (Metraipolis archive dc_287c77a6f18b, sha256 2ecbefcdd7f467660f6d90343450117866eb28742c4d0a4ad0e3c0a32a04b12d)

BibTeX

@misc{dc287c77a6f18b,
  title = {Statistical Modeling of Foreground Galactic Cirrus for Diffuse Halo Light Measurement — arXiv:2611.03172},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.03172},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_287c77a6f18b; sha256 2ecbefcdd7f467660f6d90343450117866eb28742c4d0a4ad0e3c0a32a04b12d},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.03172. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Galactic cirrus, the diffuse Milky Way starlight scattered by interstellar dust, has become a major source of systematic uncertainty in measurements of extragalactic diffuse emission at ultra-low surface brightness levels. Proper modeling and correction of this foreground is crucial to unlock the full potential of next-generation deep imaging surveys for studies of faint diffuse emission such as galactic stellar halos, ultra-diffuse galaxies, and intracluster light (ICL). We develop a statistical approach to reconstruct the 2D distribution of the Galactic cirrus while preserving the underlying diffuse extragalactic emission from stellar halos. We combine the broad dust morphology traced by far-infrared emission with multiscale structural information extracted from the optical images. The method synthesizes plausible cirrus structures through iteratively refining the foreground, the smooth diffuse light model, and the residual sky. The performance is assessed through injection--recovery experiments using Euclid VIS observations of the Abell 2390 cluster, which show substantial improvements in recovered stellar halo photometry, although residual biases depend on the local foreground structure and sky estimation. We apply the method to the central Abell 2390 field to correct for a prominent cirrus complex near its brightest cluster galaxy (BCG), revealing a smoother BCG+ICL distribution with a steeper outer light profile and reduced contamination in the integrated light. Our results demonstrate the potential of statistical modeling of Galactic cirrus to improve diffuse light photometry in deep wide-field imaging surveys.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.IM, nuovi lavori del giorno).
Categorie arXiv: Astrophysics of Galaxies (astro-ph.GA) ; Instrumentation and Methods for Astrophysics (astro-ph.IM).
Pagina del lavoro: https://arxiv.org/abs/2611.03172 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T11:12:07.690Z dalla pagina https://arxiv.org/list/astro-ph.IM/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).