Exploring the Convective Core of the Hybrid delta Scuti-gamma Doradus Star CoRoT 100866999 with Asteroseismology
文献类型:期刊论文
作者 | Chen XH(陈兴浩)1,2; Li Y(李焱)1,2,3,4; Zhang, Xiaobin5 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2019-12-20 |
卷号 | 887期号:2页码:12 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab585b |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We computed a grid of theoretical models to fit the delta 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 4.1(-0.5)(+0.6) days, rotating slower than the orbital motion. The fundamental parameters of the primary star are determined to be M = 1.7(-0.04)(+0.13) M-circle dot, Z = 0.012(-0.000)(+0.004), f(ov) = 0.02(-0.02)(+0.00), T-eff = 8024(-297)(+249) K, L = 11.898(-1.847)(+2.156) L-circle dot, log g = 4.166(-0.002)(+0.013), R = 1.787(-0.016)(+0.011), R-circle dot, and X-c = 0.488(-0.020)(+0.011), matching those obtained from the eclipsing light-curve analysis. Based on the model fittings, p(1) and p(5) are suggested to be two dipole modes, and p(3), p(4), p(6), and p(7), are suggested to be four quadrupole modes. In particular, p(4) and p(7) are identified as two components of one quintuplet. Based on the best-fitting model, we find that p(1) 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 R-conv/R = 0.0931(-0.0013)(+0.0003). |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | AMPLITUDE-MODULATION ; CHEMICAL-COMPOSITION ; INSTABILITY STRIP ; MAIN-SEQUENCE ; ROTATION ; OSCILLATIONS ; PULSATIONS ; MODELS ; SCT ; FREQUENCY |
资助项目 | NSFC of China[11333006] ; NSFC of China[11521303] ; NSFC of China[11833002] ; NSFC of China[11803082] ; West Light Foundation of The Chinese Academy of Sciences |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000506012000147 |
资助机构 | NSFC of China[11333006, 11521303, 11833002, 11803082] ; West Light Foundation of The Chinese Academy of Sciences |
源URL | [http://ir.ynao.ac.cn/handle/114a53/22108] |
专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Chen XH(陈兴浩) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China 2.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China 3.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China 5.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China |
推荐引用方式 GB/T 7714 | Chen XH,Li Y,Zhang, Xiaobin. Exploring the Convective Core of the Hybrid delta Scuti-gamma Doradus Star CoRoT 100866999 with Asteroseismology[J]. ASTROPHYSICAL JOURNAL,2019,887(2):12. |
APA | Chen XH,Li Y,&Zhang, Xiaobin.(2019).Exploring the Convective Core of the Hybrid delta Scuti-gamma Doradus Star CoRoT 100866999 with Asteroseismology.ASTROPHYSICAL JOURNAL,887(2),12. |
MLA | Chen XH,et al."Exploring the Convective Core of the Hybrid delta Scuti-gamma Doradus Star CoRoT 100866999 with Asteroseismology".ASTROPHYSICAL JOURNAL 887.2(2019):12. |
入库方式: OAI收割
来源:云南天文台
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