Instability of mass transfer in a planet-star system

	Instability of mass transfer in a planet-star system
	Jia S(贾石)1,2,3,4 ; Spruit, H. C.2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-02-11
卷号	465 期号:1 页码:149-160
关键词	planets and satellites: general planet-star interactions stars: general planetary systems
ISSN号	0035-8711
通讯作者	Jia, Shi(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
产权排序	第1完成单位
英文摘要	We show that the angular momentum exchange mechanism governing the evolution of mass-transferring binary stars does not apply to Roche lobe filling planets, because most of the angular momentum of the mass-transferring stream is absorbed by the host star. Apart from a correction for the difference in specific angular momentum of the stream and the centre of mass of the planet, the orbit does not expand much on Roche lobe overflow. We explore the conditions for dynamically unstable Roche lobe overflow as a function of planetary mass and mass and radius (age) of host star and equation of state of planet. For a Sun-like host, gas giant planets in a range of mass and entropy can undergo dynamical mass transfer. Examples of the evolution of the mass transfer process are given. Dynamic mass transfer of rocky planets depends somewhat sensitively on equation of state used. Silicate planets in the range 1 < M-p < 10M(circle plus) typically go through a phase of dynamical mass transfer before settling to slow overflow when their mass drops to less than 1 M-circle plus.
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]	ROCHE-LOBE OVERFLOW ; CATACLYSMIC VARIABLE EVOLUTION ; CLASSICAL T-TAURI ; CLOSE-IN PLANETS ; GIANT PLANETS ; CIRCUMBINARY DISKS ; ACCRETION DISKS ; MAGNETIC-FIELD ; BINARY-SYSTEMS ; HOT JUPITERS
收录类别	SCI
原文出处	https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw1693
语种	英语
WOS记录号	WOS:000393782000012
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9924]
专题	云南天文台_大样本恒星演化研究组云南天文台_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, Kunming 650011, China 2.Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 4.University of Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式 GB/T 7714	Jia S,Spruit, H. C.. Instability of mass transfer in a planet-star system[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,465(1):149-160.
APA	Jia S,&Spruit, H. C..(2017).Instability of mass transfer in a planet-star system.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,465(1),149-160.
MLA	Jia S,et al."Instability of mass transfer in a planet-star system".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 465.1(2017):149-160.