{
  "abstract": "Context. The chemical composition of the intracluster medium (ICM) provides key insights into the enrichment history of galaxy clusters. However, high-resolution abundance measurements with X-ray microcalorimeters remain available for only a few systems. While most cool-core clusters exhibit near-solar elemental abundance ratios relative to Fe, previous studies of the Virgo cluster have suggested super-solar ratios in its core.Aims. We investigate the chemical properties of the Virgo cluster core using XRISM/Resolve observations, focusing on precise measurements of Si, S, Ar, Ca, Cr, Fe, and Ni abundances. We aim to determine whether Virgo displays abundance patterns distinct from other nearby cool-core clusters and to explore the physical origin of any differences.Methods. We analyzed full field-of-view XRISM/Resolve spectra in four regions of the Virgo core (center, east, northwest, and southwest) in the 1.7–11 keV band. Single-temperature, multi-temperature, and multi-abundance models were applied to characterize the thermal structure and derive elemental abundances. The resulting abundance ratios were compared between pointings, with previous studies of Virgo/M87, and with recent XRISM measurements of other clusters.Results. All four pointings exhibit systematically super-solar X/Fe ratios, although the northwest region shows values closer to solar. Multi-abundance modeling of the eastern and southwestern regions reveals that cool, metal-rich gas uplifted by the AGN coexists with a hotter and more chemically homogeneous ambient ICM. The super-solar ratios are robust against variations in bandpass and temperature structure. We interpret these enhanced ratios as reflecting the enrichment history of the old stellar population in M87 combined with a limited cold gas reservoir.Conclusions. The Virgo core exhibits spatially resolved chemical enrichment that differs from the abundance patterns observed in other cool-core clusters. These results highlight the importance of high-resolution spectroscopy for disentangling AGN-driven transport, multi-phase structure, and stellar enrichment. Expanding microcalorimeter observations to a larger cluster sample will be essential to determine whether Virgo is an outlier or representative of a broader diversity in cluster-core enrichment histories.Key words: galaxies: abundances / galaxies: clusters: general / galaxies: clusters: intracluster medium / galaxies: clusters: individual: Virgo Cluster / galaxies: clusters: individual: M87 / X-rays: galaxies: clusters",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.18989",
  "author_total": 29,
  "authors": [
    {
      "name": "J Martin"
    },
    {
      "name": "A Simionescu"
    },
    {
      "name": "F Mernier"
    },
    {
      "name": "C Kilbourne"
    },
    {
      "name": "A Tümer"
    },
    {
      "name": "H.R Russell"
    },
    {
      "name": "M Charbonneau"
    },
    {
      "name": "N Dizdar"
    },
    {
      "name": "D Eckert"
    },
    {
      "name": "Y Ezoe"
    },
    {
      "name": "R Fujimoto"
    },
    {
      "name": "M Fujita"
    },
    {
      "name": "K Fukushima"
    },
    {
      "name": "L Gu"
    },
    {
      "name": "E Hodges-Kluck"
    },
    {
      "name": "Y Ichinohe"
    },
    {
      "name": "D Ito"
    },
    {
      "name": "S Kitamoto"
    },
    {
      "name": "M.A Leutenegger"
    },
    {
      "name": "M Loewenstein"
    },
    {
      "name": "H Mccall"
    },
    {
      "name": "B.R Mcnamara"
    },
    {
      "name": "E.D Miller"
    },
    {
      "name": "I Mitsuishi"
    },
    {
      "name": "K Nakazawa"
    },
    {
      "name": "A Ogorzalek"
    },
    {
      "name": "K Sato"
    },
    {
      "name": "A Szymkowiak"
    },
    {
      "name": "I Zhuravleva"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3egvqtx0z7g9k.bib",
  "cited_by": 0,
  "doi": "10.1051/0004-6361/202659739",
  "fulltext_url": null,
  "id": "3egvqtx0z7g9k",
  "issns": [],
  "landing_url": "https://hal.science/hal-05830219v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7162711553",
  "pdf_url": "https://hal.science/hal-05830219/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3egvqtx0z7g9k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "hal-05830219",
      "source": "hal",
      "url": "https://hal.science/hal-05830219v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Galaxies: Formation, Evolution, Phenomena",
      "subfield": "galaxies"
    }
  ],
  "title": "High-resolution X-ray spectroscopy with XRISM/Resolve reveals super-solar abundance ratios in Virgo/M87",
  "title_text": "High-resolution X-ray spectroscopy with XRISM/Resolve reveals super-solar abundance ratios in Virgo/M87",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/3egvqtx0z7g9k",
  "venue": "Astron.Astrophys.",
  "versions": []
}