Non-homogeneous solar models with metal enriched envelopes

	Non-homogeneous solar models with metal enriched envelopes
	Yang JY(杨家艳); Li Y(李焱); Xu HY(许华崟)
刊名	SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
	2001-02
卷号	44 期号:2 页码:265-272
关键词	solar structure solar evolution solar oscillations
ISSN号	1006-9283
通讯作者	Yang, JY (reprint author), NAOCAS, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Solar models with enhancement of heavy elements in the convective envelopes are investigated using the updated input physics. Unlike previous low-Z models that adopt quite low central metal abundance to considerably reduce neutrino fluxes, we investigate the effects of moderate enrichment of heavy elements in the solar convection zone on the solar structure and p-mode oscillations, It is found that the metal enriched models have less massive convection zones with deeper bottom boundaries, and their temperature profiles are systematically lower while the sound speed profiles are higher in the interior and lower in the envelope than that of the standard model. The contamination of heavy elements at different evolution phases is investigated, which results in little influence on the properties of the solar age models. The surface helium abundance is reduced considerably, and is able to approach the seismically determined value when the enhancement of heavy elements in the convection zone is carefully adjusted. The p-mode frequency patterns of our metal enriched models are systematically 10 mu Hz lower than those of the standard model, and are in better agreement with the results of observations.
学科主题	Mathematics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Mathematics, Applied ; Mathematics
研究领域[WOS]	Mathematics
关键词[WOS]	CONVECTION ZONE ; P-MODES ; FREQUENCIES ; ABUNDANCES ; OPACITIES ; SUN
收录类别	SCI ; EI
原文出处	http://link.springer.com/article/10.1007%2FBF02874430
语种	英语
WOS记录号	WOS:000167195800015
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5155]
专题	云南天文台_恒星物理研究组
作者单位	Yunnan Observatory, NAOCAS, 650011, Kunrning, China
推荐引用方式 GB/T 7714	Yang JY,Li Y,Xu HY. Non-homogeneous solar models with metal enriched envelopes[J]. SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY,2001,44(2):265-272.
APA	Yang JY,Li Y,&Xu HY.(2001).Non-homogeneous solar models with metal enriched envelopes.SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY,44(2),265-272.
MLA	Yang JY,et al."Non-homogeneous solar models with metal enriched envelopes".SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY 44.2(2001):265-272.