{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-09-15-018",
    "source_story_id": "tmp-sidebar-fuse-ovi-galaxy-cooling",
    "edition_id": "mp-2026-09-15-morning-0068",
    "edition_url": "https://themachinepress.com/edition/2026-09-15",
    "position": 20,
    "story_type": "ticker",
    "section": "research",
    "editorial_classification": "editorial",
    "headline": "Elliptical Galaxies Lost Most of the Gas Below 300,000 Kelvin",
    "slug": "elliptical-galaxies-lost-most-of-the-gas-below-300-000-kelvin",
    "dek": "Reprocessed FUSE spectra point to mass-dependent hot-gas cooling and roughly tenfold suppression before the molecular phase.",
    "summary": "Reprocessed FUSE spectra point to mass-dependent hot-gas cooling and roughly tenfold suppression before the molecular phase.",
    "body_text": "A modern reanalysis of archival FUSE spectra measures or limits O VI emission in 29 massive elliptical galaxies and uses it to infer gas cooling through about 300,000 kelvin. The reported comparison suggests cooling from hotter circumgalactic gas is suppressed four to five times more strongly at cluster scale than around groups and ellipticals. Cooling onward to molecular gas appears suppressed by about an order of magnitude across masses, implying additional mixing, conduction or recycling physics.",
    "why_it_matters": "Reprocessed FUSE spectra point to mass-dependent hot-gas cooling and roughly tenfold suppression before the molecular phase.",
    "limitations": [],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-09-15-018/elliptical-galaxies-lost-most-of-the-gas-below-300-000-kelvin",
    "json_url": "https://themachinepress.com/story/mp-2026-09-15-018.json",
    "first_published_at": "2026-09-15T09:00:00.000-04:00",
    "modified_at": "2026-09-15T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-09-15-018-001",
        "text": "Reprocessed FUSE spectra point to mass-dependent hot-gas cooling and roughly tenfold suppression before the molecular phase.",
        "source_ids": [
          "source-2026-09-15-020"
        ],
        "qualification": null
      }
    ],
    "source_ids": [
      "source-2026-09-15-020"
    ],
    "tags": [
      "elliptical galaxies",
      "circumgalactic gas",
      "ultraviolet astronomy"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-09-15-020",
      "title": "arXiv preprint 2609.13368",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.13368",
      "canonical_url": "https://arxiv.org/abs/2609.13368",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-09-13T20:00:00.000-04:00",
      "accessed_at": "2026-09-15T08:18:00.000-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-09-15-018-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "Elliptical Galaxies Lost Most of the Gas Below 300,000 Kelvin",
    "publisher": "The Machine Press",
    "published_at": "2026-09-15T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-09-15-018/elliptical-galaxies-lost-most-of-the-gas-below-300-000-kelvin"
  }
}