Solar models with revised abundances and opacities

	Solar models with revised abundances and opacities
	Yang WM(杨伍明)1,2 ; Bi SL(毕少兰)1,3
刊名	ASTROPHYSICAL JOURNAL
	2007-03-20
卷号	658 期号:1 页码:L67-L70
关键词	Sun : abundances Sun : helioseismology Sun : interior
ISSN号	0004-637X
通讯作者	Yang, WM (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Using reconstructed opacities, we construct solar models with low heavy-element abundance. Rotational mixing and enhanced diffusion of helium and heavy elements are used to reconcile the recently observed abundances with helioseismology. The sound speed and density of models in which the relative and absolute diffusion coefficients for helium and heavy elements have been increased agree with seismically inferred values at better than the 0.005 and 0.02 fractional levels, respectively. However, the surface helium abundance of the enhanced diffusion model is too low. The low-helium problem in the enhanced diffusion model can be solved to a great extent by rotational mixing. The surface helium and the convection zone depth of rotating model M04R3, which has a surface Z of 0.0154, agree with the seismic results at the levels of 1 sigma and 3 sigma, respectively. M04R3 is almost as good as the standard model M98. Some discrepancies between the models constructed in accord with the new element abundances and seismic constraints can be solved individually, but it seems difficult to resolve them as a whole.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	LINE FORMATION ; NE/O ABUNDANCE ; ROTATING SUN ; HELIOSEISMOLOGY ; GRANULATION ; DIFFUSION ; OPAL ; INTERIOR ; DEPTH ; ZONE
收录类别	SCI
原文出处	http://iopscience.iop.org/1538-4357/658/1/L67/
语种	英语
WOS记录号	WOS:000244929400017
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5186]
专题	云南天文台_恒星物理研究组
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Graduate School of the Chinese Academy of Sciences 3.Department of Astronomy, Beijing Normal University, Beijing 100875, China
推荐引用方式 GB/T 7714	Yang WM,Bi SL. Solar models with revised abundances and opacities[J]. ASTROPHYSICAL JOURNAL,2007,658(1):L67-L70.
APA	Yang WM,&Bi SL.(2007).Solar models with revised abundances and opacities.ASTROPHYSICAL JOURNAL,658(1),L67-L70.
MLA	Yang WM,et al."Solar models with revised abundances and opacities".ASTROPHYSICAL JOURNAL 658.1(2007):L67-L70.