The effects of viscosity on circumplanetary disks

CORC > 上海天文台 > 中国科学院上海天文台 > 空间导航与定位技术重点实验室

	The effects of viscosity on circumplanetary disks
	Bu, De-Fu 1; Shang, Hsien 2; Yuan, Feng1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2013
卷号	13 期号:1 页码:71-86
关键词	accretion hydrodynamics planets and satellites: formation solar system: formation accretion disks
英文摘要	The effects of viscosity on the circumplanetary disks residing in the vicinity of protoplanets are investigated through two-dimensional hydrodynamical simulations with the shearing sheet model. We find that viscosity can considerably affect properties of the circumplanetary disk when the mass of the protoplanet M-p less than or similar to 33 M-circle plus, where M-circle plus is the Earth's mass. However, effects of viscosity on the circumplanetary disk are negligibly small when the mass of the protoplanet M-p greater than or similar to 33 M-circle plus. We find that when M-p less than or similar to 33 M-circle plus, viscosity can markedly disrupt the spiral structure of the gas around the planet and smoothly distribute the gas, which weakens the torques exerted on the protoplanet. Thus, viscosity can slow the migration speed of a protoplanet. After including viscosity, the size of the circumplanetary disk can be decreased by a factor of greater than or similar to 20%. Viscosity helps to transport gas into the circumplanetary disk from the differentially rotating circumstellar disk. The mass of the circumplanetary disk can be increased by a factor of 50% after viscosity is taken into account when M-p less than or similar to 33 M-circle plus. Effects of viscosity on the formation of planets and satellites are briefly discussed.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	RADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; GAS GIANT PLANET ; MAGNETOROTATIONAL INSTABILITY ; PROTOPLANETARY DISCS ; ASTROPHYSICAL FLOWS ; ANGULAR-MOMENTUM ; MASS PLANETS ; ACCRETION ; SIMULATIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000314863600008
公开日期	2014-09-22
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15201]
专题	上海天文台_空间导航与定位技术重点实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Acad Sinica ASIAA, Inst Astron & Astrophys, Taipei, Taiwan
推荐引用方式 GB/T 7714	Bu, De-Fu,Shang, Hsien,Yuan, Feng. The effects of viscosity on circumplanetary disks[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(1):71-86.
APA	Bu, De-Fu,Shang, Hsien,&Yuan, Feng.(2013).The effects of viscosity on circumplanetary disks.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(1),71-86.
MLA	Bu, De-Fu,et al."The effects of viscosity on circumplanetary disks".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.1(2013):71-86.