{
  "abstract": "We present measurements of galaxy spin-filament alignments at 0.20<z<0.42 using the MAGPI Survey, exploiting resolved stellar and ionised gas kinematics to reconstruct 3D spin axes. Cosmic filaments are identified using a stellar mass-matched constant-number-density population from the GAMA, MAGPI Redshift Survey and DESI datasets. We detect a flipping of the statistical alignment signal at z~0.3 as a function of M*: low-mass galaxies preferentially exhibit spins parallel to the direction of their host filaments, while high-mass galaxies tend towards perpendicular orientations. The transition mass is measured to be log(M{*,t}/Msun)~10.8, approximately 0.6 dex higher than the value for the SAMI Galaxy Survey at z~0.05. Bootstrap analysis gives 99.5% confidence that the transition mass is higher for MAGPI than SAMI. At fixed stellar mass MAGPI galaxies exhibit stronger parallel alignments than their SAMI counterparts, suggesting evolution of spin-filament alignments over the past ~3 Gyr. The gaseous component in MAGPI galaxies is more closely aligned with filaments than the stellar component, relative to a M*-matched SAMI sample. This indicates a stronger coupling between ionised gas and the large-scale structure at z~0.3, consistent with coherent gas accretion onto filaments remaining efficient at higher M*. At z~0 we detect a transition toward perpendicular alignments at lower M*, while the gas and stellar components exhibit similar alignments relative to filaments, likely due to the cumulative effects of mergers and secular evolution.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.00212",
  "author_total": 23,
  "authors": [
    {
      "name": "Stefania Barsanti"
    },
    {
      "name": "Andrew J. Battisti"
    },
    {
      "name": "Sabine Bellstedt"
    },
    {
      "name": "Matthew Colless"
    },
    {
      "name": "Scott M. Croom"
    },
    {
      "name": "Caroline Foster"
    },
    {
      "name": "Katherine E. Harborne"
    },
    {
      "name": "Claudia D. P. Lagos"
    },
    {
      "name": "J. Trevor Mendel"
    },
    {
      "name": "Matt S. Owers"
    },
    {
      "name": "Elmo Tempel"
    },
    {
      "name": "Emily Wisnioski"
    },
    {
      "name": "Iris Breda"
    },
    {
      "name": "Pratyush K. Das"
    },
    {
      "name": "Clotilde Laigle"
    },
    {
      "name": "Rhea-Silvia Remus"
    },
    {
      "name": "Gauri Sharma"
    },
    {
      "name": "Sabine Thater"
    },
    {
      "name": "Lucas M. Valenzuela"
    },
    {
      "name": "Jesse van de Sande"
    },
    {
      "name": "Glenn van de Ven"
    },
    {
      "name": "Daria Zakharova"
    },
    {
      "name": "Bodo L. Ziegler"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fwxjhq9sw4ts1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00212",
  "fulltext_url": null,
  "id": "fwxjhq9sw4ts1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.00212",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2611.00212",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fwxjhq9sw4ts1.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00212",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00212"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "The MAGPI Survey: the evolution of galaxy spin-filament alignments since z~0.3",
  "title_text": "The MAGPI Survey: the evolution of galaxy spin-filament alignments since z~0.3",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/fwxjhq9sw4ts1",
  "venue": "arXiv",
  "versions": []
}