{
  "abstract": "Context. In the context of Milky Way studies, the Vera C. Rubin Observatory’s Legacy Survey of Space and Time is often described as a deep extension of the Gaia survey. In the future, joint analyses of the Gaia and LSST data promise to bring new insights into the Galaxy’s structure and formation history. However, the relatively small overlap in the magnitude ranges of the two surveys raises the question of how to perform a joint calibration of these datasets. Aims. We produce high-quality synthetic LSST photometry from Gaia XP low-resolution spectra and use SDSS and DES observed photometry to calibrate the spectra. Methods. We developed a method for empirically correcting Gaia XP spectra using SDSS Stripe 82 photometry. We projected sources for which Gaia XP data are available onto a magnitude–magnitude grid and calculated the residuals between uncorrected synthetic and observed SDSS magnitudes, which we then used to derive correction coefficients across spectral regions corresponding to each photometric band. Results. The correction significantly reduces systematic trends and scatter in the synthetic magnitudes: the median residuals decrease by an order of magnitude (e.g. for the u band the improvement is from 0.038 to 0.002 mag), and the standard deviation of residuals typically reduces by factor of 2 (e.g. for the u band from 0.2 to 0.07 mag). Conclusions. Our correction approach improves the reliability of synthetic photometry derived from Gaia XP spectra and enables a joint analysis of Gaia and LSST data for studies of Galactic structure and stellar populations.",
  "abstract_shown": true,
  "affiliations": [
    "Ruđer Bošković Institute"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Razim Oleksandra",
      "orcid": "0000-0002-3045-0446"
    },
    {
      "affs": [
        0
      ],
      "name": "Tisanić Krešimir",
      "orcid": "0000-0001-6382-4937"
    },
    {
      "affs": [
        0
      ],
      "name": "Palaversa Lovro",
      "orcid": "0000-0003-3710-0331"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/13x6qaacvepvp.bib",
  "cited_by": 0,
  "doi": "10.1051/0004-6361/202555722",
  "fulltext_url": "https://www.aanda.org/articles/aa/full_html/2026/10/aa55722-25/aa55722-25.html",
  "id": "13x6qaacvepvp",
  "issns": [
    "0004-6361",
    "1432-0746"
  ],
  "landing_url": "https://doi.org/10.1051/0004-6361/202555722",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QB1-991"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7203759164",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "EDP Sciences",
  "ris": "https://research.draconitic.com/paper/13x6qaacvepvp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:47Z",
      "native_id": "c3e348f6f86e48b1a7a5101b05adfdd5",
      "source": "doaj",
      "url": "https://doi.org/10.1051/0004-6361/202555722"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Vera C. Rubin LSST synthetic magnitudes derived from Gaia XP spectra",
  "title_text": "Vera C. Rubin LSST synthetic magnitudes derived from Gaia XP spectra",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:47Z",
  "url": "https://research.draconitic.com/paper/13x6qaacvepvp",
  "venue": "Astronomy & Astrophysics",
  "versions": []
}