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    "story_id": "mp-2026-10-30-019",
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    "headline": "One Hundred Fifty-Six Thousand Stars Draw a Pulsation Map",
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    "dek": "TESS and Gaia identify 156,706 delta Scuti pulsators among more than 1.5 million surveyed A- and F-type stars.",
    "summary": "TESS and Gaia identify 156,706 delta Scuti pulsators among more than 1.5 million surveyed A- and F-type stars.",
    "body_text": "The pulsator fraction peaks at 30 percent across the full instability strip and 80 percent in the brightest bins, showing that sensitivity explains much but not all apparent impurity. Cluster cross-matches suggest mean pulsation frequency may serve as an ensemble age indicator for young populations.",
    "why_it_matters": "TESS and Gaia identify 156,706 delta Scuti pulsators among more than 1.5 million surveyed A- and F-type stars.",
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      "The pulsator fraction peaks at 30 percent across the full instability strip and 80 percent in the brightest bins, showing that sensitivity explains much but not all apparent impurity."
    ],
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    "first_published_at": "2026-10-30T09:00:00.000-04:00",
    "modified_at": "2026-10-30T09:00:00.000-04:00",
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        "qualification": "The pulsator fraction peaks at 30 percent across the full instability strip and 80 percent in the brightest bins, showing that sensitivity explains much but not all apparent impurity."
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    "tags": [
      "TESS",
      "Gaia",
      "asteroseismology"
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  "sources": [
    {
      "source_id": "source-2026-10-30-021",
      "title": "arXiv preprint 2610.40656, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.40656v1",
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      "published_at": "2026-10-28T20:00:00.000-04:00",
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    "title": "One Hundred Fifty-Six Thousand Stars Draw a Pulsation Map",
    "publisher": "The Machine Press",
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