{
  "abstract": "We investigate how cluster environments affect galaxy star formation, structure, and stellar populations using spectroscopically-confirmed galaxies in X-ray-selected eROSITA clusters, that have deep HSC-SSP imaging and DESI DR1 spectroscopy. At 0.1<z<0.5, we compare dust-corrected Ha star formation rates (SFRs), effective radii (Re), bulge-to-total light ratios (B/T), and Dn4000 between cluster satellites and a stellar-mass- and redshift-matched field control sample. We identify UVJ-quiescent galaxies and divide the UVJ star-forming population at log(sSFR_Ha)= -10.5 yr-1 into actively star-forming and Ha-low systems, the latter referred to as green-valley (GV) galaxies. Cluster--field differences depend strongly on stellar mass, projected cluster-centric radius, and galaxy population. Cluster star-forming galaxies show modest SFR suppression but weak structural offsets. The strongest coupled signatures occur among Ha-low UVJ-star-forming galaxies, particularly low-mass satellites at R<0.5R500, which have lower SFRs, smaller light-weighted sizes, larger B/T, and larger Dn4000 than matched field counterparts. Quiescent galaxies show weaker structural offsets but retain a positive Dn4000 residual. We quantify the joint signal using a Mahalanobis distance based on matched residuals in SFR, Re, B/T, and Dn4000 with a field--field reference covariance. The multivariate offset is largest for low-mass GV galaxies and decreases toward larger projected radius. The broader radial extent of SFR suppression relative to structural offsets suggests that star-formation suppression has a broader environmental reach than structural transformation. These results show that environmental quenching and structural transformation are most strongly coupled in the Ha-low transition population.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29971",
  "author_total": 15,
  "authors": [
    {
      "name": "Can Xu"
    },
    {
      "name": "John D. Silverman"
    },
    {
      "name": "Qiusheng Gu"
    },
    {
      "name": "Daniela Galárraga-Espinosa"
    },
    {
      "name": "Andreas L. Faisst"
    },
    {
      "name": "Emanuele Daddi"
    },
    {
      "name": "Hassen M. Yesuf"
    },
    {
      "name": "Angelo George"
    },
    {
      "name": "Esra Bulbul"
    },
    {
      "name": "Zeyu Gao"
    },
    {
      "name": "Lalitwadee Kawinwanichakij"
    },
    {
      "name": "Takumi S. Tanaka"
    },
    {
      "name": "Yunjing Wu"
    },
    {
      "name": "Jialai Wang"
    },
    {
      "name": "Michiru Maruyama"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9fmesqyxc5kdg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29971",
  "fulltext_url": null,
  "id": "9fmesqyxc5kdg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29971",
  "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.GA"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7223215986",
  "pdf_url": "https://arxiv.org/pdf/2610.29971",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9fmesqyxc5kdg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29971",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29971"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "The Structural Anatomy of Galaxies: Environmental Dependence of Morphological and Quenching Evolution at 0.1 < z < 0.5",
  "title_text": "The Structural Anatomy of Galaxies: Environmental Dependence of Morphological and Quenching Evolution at 0.1 < z < 0.5",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/9fmesqyxc5kdg",
  "venue": "arXiv",
  "versions": []
}