The effects of the Reimers eta on the solar rotational period when our Sun evolves to the RGB tip

	The effects of the Reimers eta on the solar rotational period when our Sun evolves to the RGB tip
	Guo, Jianpo 1,2; Lin, Ling 1; Bai, Chunyan 1; Liu, Jinzhong3
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2017
卷号	362 期号:1
关键词	Sun: rotation Stars: mass loss ISM: planetary nebulae Planets: hot Jupiter
ISSN号	0004-640X
英文摘要	Our Sun will expand enormously and lose substantial mass via a stellar wind during the red giant branch (RGB) phase; the rotational period will be prolonged by several orders of magnitude. It is difficult to predict how much mass the Sun will lose before it reaches the RGB tip. Therefore, the solar rotational period at the RGB tip is also quite indeterminate. In this work, the Sun is considered as a two-component system comprised of a core and a convective envelope, each being allowed to rotate freely. The angular momentum transfer from the inner planets to the solar envelope is taken into consideration. Using Eggleton's stellar evolution code, we study how the solar rotational period at the RGB tip depends on the value of Reimers. chosen. The solar envelope's rotational period at the RGB tip varies from 1 792 to 736 934 years, as the Reimers. is changed from 0.00 to 0.75. Recent observations show that the average Reimers. of Sun-like stars is 0.477. Adopting this average value of the Reimers., the solar envelope's rotational period at the RGB tip will be 24 868 years. We also show how the envelope's rotational evolves with age and luminosity. Other Sun-like stars, with different planetary configurations, may prematurely eject mass and lead to planetary nebulae, if they engulf a brown-dwarf companion at the RGB tip. Swallowing a planet with 13 Jupiter masses and a 3-day orbit, a Sun-like star can become a rapidly rotating giant star.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	POST-MAIN-SEQUENCE ; RED GIANT BRANCH ; STELLAR EVOLUTION ; MASS-LOSS ; HOT JUPITERS ; WHITE-DWARFS ; COOL STARS ; OPACITIES ; EARTH ; SYSTEMS
收录类别	SCI
语种	英语
WOS记录号	WOS:000392295900015
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1421]
专题	新疆天文台_光学天文与技术应用研究室
作者单位	1.Puer Univ, Sch Sci & Technol, Puer 665000, Yunnan Province, Peoples R China 2.Open Key Lab Mech Yunnan Prov, Puer 665000, Yunnan Province, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang Provin, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jianpo,Lin, Ling,Bai, Chunyan,et al. The effects of the Reimers eta on the solar rotational period when our Sun evolves to the RGB tip[J]. ASTROPHYSICS AND SPACE SCIENCE,2017,362(1).
APA	Guo, Jianpo,Lin, Ling,Bai, Chunyan,&Liu, Jinzhong.(2017).The effects of the Reimers eta on the solar rotational period when our Sun evolves to the RGB tip.ASTROPHYSICS AND SPACE SCIENCE,362(1).
MLA	Guo, Jianpo,et al."The effects of the Reimers eta on the solar rotational period when our Sun evolves to the RGB tip".ASTROPHYSICS AND SPACE SCIENCE 362.1(2017).