{
  "abstract": "Building on Paper~I, which constrained core overshooting to $f_{\\rm ov} < 0.01$ for $M < 1.4\\,M_{\\odot}$ and found $α_{\\rm MLT} \\simeq 2.0$ for metal-rich red giants, we extend this analysis to four lower-mass \\textit{Kepler} red giants spanning a broad metallicity range: KIC~6117517, KIC~9475697, KIC~10123207, and KIC~10200377. Two complementary model grids are constructed: Grid~A fixes $α_{\\rm MLT} = 2.0$ while varying metallicity; Grid~B adopts spectroscopic metallicities with $α_{\\rm MLT}$ as a free parameter. Grid~A successfully reproduces both asteroseismic and spectroscopic constraints for the metal-rich targets (KIC~6117517 and KIC~9475697), confirming $α_{\\rm MLT} = 2.0$ for metal-rich red giants. For the metal-poor targets (KIC~10123207 and KIC~10200377), Grid~B yields larger mixing-length parameters of $α_{\\rm MLT} \\approx 2.16$--$2.18$. Although only four stars are analyzed with unequal sensitivity to $α_{\\rm MLT}$, these results suggest a tentative increase in convective efficiency toward lower metallicity, consistent with 3D hydrodynamical simulations but opposite to some 1D empirical calibrations. The best-fitting overshooting parameters ($f_{\\rm ov} = 0.006$--$0.007$) independently support the Paper~I constraint and are consistent with a mass-dependent overshooting relation. The parameter uncertainties reach $0.6$--$2.5\\%$ in mass, $0.2$--$0.9\\%$ in radius, $2$--$13\\%$ in age, and below $0.6\\%$ in helium-core mass and below $0.2\\%$ in helium-core radius. Surface-effect corrections are negligible for g-dominated mixed modes, validating $χ^2_{l=1g}$ as a robust fitting metric. For KIC~9475697, the core rotation rate is determined to be $Ω_{\\rm core} = 0.6945 \\pm 0.0190\\,μ$Hz from model-based trapping parameters.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.32357",
  "author_total": 3,
  "authors": [
    {
      "name": "Xinyi Zhang"
    },
    {
      "name": "Tanda Li"
    },
    {
      "name": "Shaolan Bi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/96bt5kqyn6av8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.32357",
  "fulltext_url": null,
  "id": "96bt5kqyn6av8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.32357",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7223657283",
  "pdf_url": "https://arxiv.org/pdf/2610.32357",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/96bt5kqyn6av8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.32357",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.32357"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Probing Red Giant Interiors with g-Dominated Mixed Modes II: The Cases of KIC 6117517, KIC 9475697, KIC 10123207 and KIC 10200377",
  "title_text": "Probing Red Giant Interiors with g-Dominated Mixed Modes II: The Cases of KIC 6117517, KIC 9475697, KIC 10123207 and KIC 10200377",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/96bt5kqyn6av8",
  "venue": "arXiv",
  "versions": []
}