{
  "abstract": "Dwarf spheroidal galaxies (dSphs) contain little detectable cold gas, but the relative roles of stellar feedback, reionization, and environmental effects in their gas loss remain uncertain. We apply an order-of-magnitude energy-budget test to nine Milky Way dwarf satellites using published color--magnitude-diagram star formation histories (SFHs), galaxy-level velocity dispersions, effective radii, and integrated $V$-band luminosities. For each galaxy and halo prescription, we define the energy-equivalence time $τ_{\\mathrm{E}}$, when a crossing exists, as the first elapsed time at which the cumulative effective energy from core-collapse supernovae equals the adopted gas binding energy. This quantity is an energetic diagnostic rather than a direct measurement of wind launch. Under the fiducial parameters, all nine galaxies reach the nominal threshold under the kinematic--size prescription K+B16, yet star formation often continues long after threshold crossing. We compare the corresponding lookback time $t_{\\mathrm{E,lb}}$ with $t_{90,\\mathrm{lb}}$, the lookback time at which 90\\% of the total initial stellar mass had formed. Because both times are derived from the same cumulative SFH, their temporal proximity is interpreted descriptively rather than as independent evidence of feedback-driven quenching. Whether the threshold is reached depends on the adopted halo mass, radius, retained gas fraction, and supernova--gas coupling efficiency. These results distinguish the availability of sufficient cumulative feedback energy from the processes that determine the timing of quenching.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.21186",
  "author_total": 4,
  "authors": [
    {
      "name": "Sena A. Matsui"
    },
    {
      "name": "Tsutomu T. Takeuchi"
    },
    {
      "name": "Suchetha Cooray"
    },
    {
      "name": "Kiyoaki Christopher Omori"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2rtewyns4n5r3.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.21186",
  "fulltext_url": null,
  "id": "2rtewyns4n5r3",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.21186",
  "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": "W7222739616",
  "pdf_url": "https://arxiv.org/pdf/2610.21186",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2rtewyns4n5r3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.21186",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.21186"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "An Energetic Consistency Test for Feedback-Driven Gas Loss in Milky Way Dwarf Satellites",
  "title_text": "An Energetic Consistency Test for Feedback-Driven Gas Loss in Milky Way Dwarf Satellites",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/2rtewyns4n5r3",
  "venue": "arXiv",
  "versions": []
}