{
  "abstract": "The Euclid spectroscopic surveys will substantially increase the number of observed emission-line galaxies. We assess the ability of the Euclid Wide Survey (EWS) and Euclid Deep Survey (EDS), at the final DR3 depth, to recover the star-forming main sequence (MS), dust-mass relation (DMR), and mass-metallicity relation (MZR) from emission-line measurements. We use MAMBO (mocks with abundance matching in Bologna) spectroscopic simulations processed with the official Euclid pipelines. The MS is traced over $0\\leq z\\leq 4$ using Pa$β$, H$α$, and [OII] as SFR tracers. The shallow EWS flux limit biases the MS towards higher normalisation and a flatter slope by selecting the brightest, most strongly star-forming galaxies. The deeper EDS enables almost complete sampling with Pa$β$ and H$α$ at log$_{10}(M_*/M_\\odot)\\geq10.3$ over $0\\leq z\\leq 1.88$, with mild biases at both redshift limits. The [OII]-based MS is increasingly biased towards higher SFRs at the highest redshifts. The DMR is traced through the Balmer decrement over $1.45\\leq z\\leq 1.88$ and $0.9\\leq z\\leq 1.88$ in the EWS and EDS, respectively. The derived colour excess agree well with the input values, although detecting the faint H$β$ line restricts the sample to less obscured galaxies at fixed $M_*$, particularly in the EWS; the DMR is better sampled in the EDS. Finally, a golden sample detected in multiple optical rest-frame emission lines at $1.49\\leq z\\leq 1.88$ recovers gas-phase metallicities with typical accuracy of 0.1 dex at log$_{10}(M_*/M_\\odot)\\geq10$, while lower-mass galaxies show biases up to 0.15 dex. Relative to H-band limited sample, this sample preferentially traces the upper MS and lower MZR. Despite the simplified simulations lacking effects such as mutual spectral contamination and detector persistence, these forecasts provide a benchmark for future Euclid spectroscopic analyses.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05482",
  "author_total": 320,
  "authors": [
    {
      "name": "Euclid Collaboration"
    },
    {
      "name": "C. Mancini"
    },
    {
      "name": "L. Gabarra"
    },
    {
      "name": "S. Quai"
    },
    {
      "name": "L. Pozzetti"
    },
    {
      "name": "P. Cassata"
    },
    {
      "name": "M. Talia"
    },
    {
      "name": "M. Scodeggio"
    },
    {
      "name": "M. Bolzonella"
    },
    {
      "name": "M. Moresco"
    },
    {
      "name": "D. Vergani"
    },
    {
      "name": "E. Maiorano"
    },
    {
      "name": "V. Le Brun"
    },
    {
      "name": "B. R. Granett"
    },
    {
      "name": "S. Bisogni"
    },
    {
      "name": "A. Gargiulo"
    },
    {
      "name": "G. Vietri"
    },
    {
      "name": "M. Siudek"
    },
    {
      "name": "R. Ragusa"
    },
    {
      "name": "G. Herzog"
    },
    {
      "name": "G. De Lucia"
    },
    {
      "name": "L. Scharré"
    },
    {
      "name": "M. Fumana"
    },
    {
      "name": "M. Hirschmann"
    },
    {
      "name": "V. Allevato"
    },
    {
      "name": "L. Bisigello"
    },
    {
      "name": "A. Enia"
    },
    {
      "name": "A. Feltre"
    },
    {
      "name": "G. Rodighiero"
    },
    {
      "name": "G. Zamorani"
    },
    {
      "name": "P. Corcho-Caballero"
    },
    {
      "name": "X. Lopez Lopez"
    },
    {
      "name": "S. Andreon"
    },
    {
      "name": "N. Auricchio"
    },
    {
      "name": "C. Baccigalupi"
    },
    {
      "name": "M. Baldi"
    },
    {
      "name": "A. Balestra"
    },
    {
      "name": "S. Bardelli"
    },
    {
      "name": "P. Battaglia"
    },
    {
      "name": "A. Biviano"
    },
    {
      "name": "E. Branchini"
    },
    {
      "name": "M. Brescia"
    },
    {
      "name": "S. Camera"
    },
    {
      "name": "V. Capobianco"
    },
    {
      "name": "C. Carbone"
    },
    {
      "name": "J. Carretero"
    },
    {
      "name": "M. Castellano"
    },
    {
      "name": "G. Castignani"
    },
    {
      "name": "S. Cavuoti"
    },
    {
      "name": "P. -Y. Chabaud"
    },
    {
      "name": "A. Cimatti"
    },
    {
      "name": "C. Colodro-Conde"
    },
    {
      "name": "G. Congedo"
    },
    {
      "name": "L. Conversi"
    },
    {
      "name": "Y. Copin"
    },
    {
      "name": "F. Courbin"
    },
    {
      "name": "H. M. Courtois"
    },
    {
      "name": "H. Degaudenzi"
    },
    {
      "name": "S. de la Torre"
    },
    {
      "name": "H. Dole"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ax5rfbc8yjdbq.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05482",
  "fulltext_url": null,
  "id": "ax5rfbc8yjdbq",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05482",
  "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.CO"
    ],
    [
      "arxiv",
      "astro-ph.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05482",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ax5rfbc8yjdbq.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05482",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05482"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Euclid. Predicting scaling relations for emission-line galaxies using simulated data",
  "title_text": "Euclid. Predicting scaling relations for emission-line galaxies using simulated data",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:10Z",
  "url": "https://research.draconitic.com/paper/ax5rfbc8yjdbq",
  "venue": "arXiv",
  "versions": []
}