EXPLORING THE HELIUM CORE OF THE delta SCUTI STAR COROT 102749568 WITH ASTEROSEISMOLOGY

	EXPLORING THE HELIUM CORE OF THE delta SCUTI STAR COROT 102749568 WITH ASTEROSEISMOLOGY
	Chen XH(陈兴浩)1,2,3 ; Li Y(李焱)1,2,3,4 ; Lin GF(林桂芳)1,2 ; Chen, Yanhui2,5,6 ; Guo JJ(郭军军)1,2,3
刊名	ASTROPHYSICAL JOURNAL
	2017-01-10
卷号	834 期号:2
关键词	stars: individual (CoRoT 102749568) stars: rotation stars: variables: delta Scuti
ISSN号	0004-637X
通讯作者	Chen, Xinghao(Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China)
产权排序	第1完成单位
英文摘要	Based on regularities in rotational splitting, we seek possible multiplets for the observed frequencies of CoRoT 102749568. There are 21 sets of multiplets identified, including four sets of multiplets with l = 1, nine sets of multiplets with l = 2, and eight sets of multiplets with l = 3. In particular, there are three complete triplets (f(10), f(12), f(14)), (f(31), f(34), f(35)), and (f(41), f(43), f(44)). The rotational period of CoRoT 102749568 is estimated to be 1.34(-0.05)(+0.04) days. When doing model fittings, three l = 1 modes (f(12,) f(34), and f(43)) and the radial first overtone f(13) are used. Our results shows that the three nonradial modes (f(12), f(34), and f(43)) are mixed modes, which mainly provide constraints on the helium core. The radial first overtone f(13) mainly provides constraint on the stellar envelope. Hence the size of the helium core of CoRoT 102749568 is determined to be M-Pi e = 0.148 +/- 0.003 M-circle dot and R-Pi e = 0.0581 +/- 0.0007 R-circle dot. The fundamental parameters of CoRoT 102749568 are determined to be M = 1.54 +/- 0.03 M-circle dot, Z=0.006, f(ov) = 0.004 +/- 0.002, log g = 3.696 +/- 0.003, T-eff = 6886 +/- 70 K, R = 2.916 +/- 0.039 R-circle dot, and L = 17.12 +/- 1.13 L-circle dot.
学科主题	天文学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STELLAR ASTROPHYSICS MESA ; WHITE-DWARFS ; OSCILLATIONS ; EVOLUTION ; ROTATION ; MODELS ; CONVECTION ; PHOTOMETRY ; OVERSHOOT ; SPECTROSCOPY
收录类别	SCI
原文出处	http://stacks.iop.org/0004-637X/834/i=2/a=146?key=crossref.aa32bb78f038a8bf05eb5209ced3221f
语种	英语
WOS记录号	WOS:000393759200008
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9923]
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
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 2.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China 5.Institute of Astrophysics, Chuxiong Normal University, Chuxiong 675000, China 6.School of Physics and Electronical Science, Chuxiong Normal University, Chuxiong 675000, China
推荐引用方式 GB/T 7714	Chen XH,Li Y,Lin GF,et al. EXPLORING THE HELIUM CORE OF THE delta SCUTI STAR COROT 102749568 WITH ASTEROSEISMOLOGY[J]. ASTROPHYSICAL JOURNAL,2017,834(2).
APA	Chen XH,Li Y,Lin GF,Chen, Yanhui,&Guo JJ.(2017).EXPLORING THE HELIUM CORE OF THE delta SCUTI STAR COROT 102749568 WITH ASTEROSEISMOLOGY.ASTROPHYSICAL JOURNAL,834(2).
MLA	Chen XH,et al."EXPLORING THE HELIUM CORE OF THE delta SCUTI STAR COROT 102749568 WITH ASTEROSEISMOLOGY".ASTROPHYSICAL JOURNAL 834.2(2017).