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Probing Red Giant Interiors with Gravity-dominated Mixed Modes. I. The Cases of KIC 9145955, KIC 9970396, KIC 9882316, and KIC 11968334

文献类型：期刊论文

作者Zhang, Xinyi1,2; Li, Tanda1,2; Chen, Jianxing2; Chen XH(陈兴浩)3; Li, Gang4; Li, Chunqian1,2; Bi, Shaolan1,2
刊名ASTROPHYSICAL JOURNAL
出版日期2026-05-10
卷号1002期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ae5e61
产权排序第3完成单位
文献子类Article
英文摘要We perform a detailed asteroseismic analysis of four red giants observed by Kepler: KIC 9145955, KIC 9970396, KIC 9882316, and KIC 11968334. Our study is based on individual oscillation frequencies, with particular emphasis on gravity-dominated (g-dominated) mixed modes. These modes are highly sensitive to the deep stellar interior and serve as powerful diagnostics of core structure, convective overshooting, and internal rotation. Moreover, surface effects have minimal impact on g-dominated mixed modes. To ensure accurate frequency matching between observations and theoretical models, we apply a mode-identification technique that effectively distinguishes pressure-dominated from g-dominated modes. Although a definitive confirmation of this trend requires a substantially larger asteroseismic sample, our best-fitting models suggest that the derived convective overshooting parameter (f(ov)) increases with stellar mass. In particular, within our sample, stars with masses exceeding 1.4M(circle dot) require f(ov) > 0.01, whereas lower-mass red giants tend to have f(ov) < 0.01. In addition, the average core rotation rate of KIC 11968334 is precisely determined to be 0.7409 +/- 0.0113 mu Hz from the asteroseismic model.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词STELLAR OSCILLATION FREQUENCIES ; CONVECTIVE-CORE ; PERIOD SPACINGS ; AUTOMATED-DETERMINATION ; ASTEROSEISMIC ANALYSIS ; INTERNAL-ROTATION ; SCALING RELATIONS ; ANGULAR-MOMENTUM ; STARS ; MASS
资助项目Yunnan Revitalization Talent Support Program Young Talent Project; Youth Innovation Promotion Association of the Chinese Academy of Science; China Manned Space Program[CMS-CSST-2025-A15]; The Fundamental Research Funds for the Central Universities; China Postdoctoral Science Foundation[2024M760241]; MOST divided by National Key Research and Development Program of China (NKPs)[No. 2024YFA1611901]; National Natural Science Foundation of China (NSFC)[No. 12090040]; Postdoctoral Fellowship Program of CPSF[GZC20240126]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001762446500001
出版者IOP Publishing Ltd
资助机构Yunnan Revitalization Talent Support Program Young Talent Project ; Youth Innovation Promotion Association of the Chinese Academy of Science ; China Manned Space Program[CMS-CSST-2025-A15] ; The Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation[2024M760241] ; MOST divided by National Key Research and Development Program of China (NKPs)[No. 2024YFA1611901] ; National Natural Science Foundation of China (NSFC)[No. 12090040] ; Postdoctoral Fellowship Program of CPSF[GZC20240126]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29184]  
专题云南天文台_恒星物理研究组
通讯作者Zhang, Xinyi
作者单位1.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People’s Republic of China; zhangxy_cn@bnu.edu.cn, litanda@bnu.edu.cn, bisl@bnu.edu.cn;
2.School of Physics and Astronomy, Beijing Normal University, Beijing 100875, People’s Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People’s Republic of China;
4.Institute of Astronomy (IvS), Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
推荐引用方式
GB/T 7714		 Zhang, Xinyi,Li, Tanda,Chen, Jianxing,et al. Probing Red Giant Interiors with Gravity-dominated Mixed Modes. I. The Cases of KIC 9145955, KIC 9970396, KIC 9882316, and KIC 11968334[J]. ASTROPHYSICAL JOURNAL,2026,1002(2).
APA Zhang, Xinyi.,Li, Tanda.,Chen, Jianxing.,陈兴浩.,Li, Gang.,...&Bi, Shaolan.(2026).Probing Red Giant Interiors with Gravity-dominated Mixed Modes. I. The Cases of KIC 9145955, KIC 9970396, KIC 9882316, and KIC 11968334.ASTROPHYSICAL JOURNAL,1002(2).
MLA Zhang, Xinyi,et al."Probing Red Giant Interiors with Gravity-dominated Mixed Modes. I. The Cases of KIC 9145955, KIC 9970396, KIC 9882316, and KIC 11968334".ASTROPHYSICAL JOURNAL 1002.2(2026).

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来源：云南天文台

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