Exploring the Convective Core of the Hybrid δ Scuti-γ Doradus Star CoRoT 100866999 with Asteroseismology
文献类型：期刊论文
| 作者 | Chen,Xinghao4,5; Li,Yan2,3,4,5; Zhang,Xiaobin1
|
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-12-20 |
| 卷号 | 887期号:2 |
| 关键词 | Asteroseismology Delta Scuti variable stars Pulsating variable stars Gamma Doradus variable stars |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab585b |
| 英文摘要 | Abstract We computed a grid of theoretical models to fit the δ Scuti frequencies of CoRoT 100866999 detected earlier from the CoRoT time serials. The pulsating primary star is determined to be a main-sequence star with a rotation period of days, rotating slower than the orbital motion. The fundamental parameters of the primary star are determined to be , , , K, , , , and , matching those obtained from the eclipsing light-curve analysis. Based on the model fittings, p1 and p5 are suggested to be two dipole modes, and p3, p4, p6, and p7 are suggested to be four quadrupole modes. In particular, p4 and p7 are identified as two components of one quintuplet. Based on the best-fitting model, we find that p1 is a g mode and the other nonradial modes have pronounced mixed characters, which give strong constraints on the convective core. Finally, the relative size of the convective core of CoRoT 100866999 is determined to . |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-887-2-AB585B |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28697]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China; xzhang@bao.ac.cn 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China 3.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 4.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China 5.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; chenxinghao@ynao.ac.cn, ly@ynao.ac.cn |
| 推荐引用方式 GB/T 7714 | Chen,Xinghao,Li,Yan,Zhang,Xiaobin. Exploring the Convective Core of the Hybrid δ Scuti-γ Doradus Star CoRoT 100866999 with Asteroseismology[J]. The Astrophysical Journal,2019,887(2). |
| APA | Chen,Xinghao,Li,Yan,&Zhang,Xiaobin.(2019).Exploring the Convective Core of the Hybrid δ Scuti-γ Doradus Star CoRoT 100866999 with Asteroseismology.The Astrophysical Journal,887(2). |
| MLA | Chen,Xinghao,et al."Exploring the Convective Core of the Hybrid δ Scuti-γ Doradus Star CoRoT 100866999 with Asteroseismology".The Astrophysical Journal 887.2(2019). |
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