Obliquity evolution of the minor satellites of Pluto and Charon

doi:10.1016/j.icarus.2017.04.012

	Obliquity evolution of the minor satellites of Pluto and Charon
	Quillen, Alice C.1; Nichols-Fleming, Fiona 1; Chen, Yuan-Yuan1,2 ; Noyelles, Benoit 3,4
刊名	ICARUS
	2017-09-01
卷号	293 页码:94-113
ISSN号	0019-1035
DOI	10.1016/j.icarus.2017.04.012
通讯作者	Quillen, Alice C.(alice.quillen@gmail.com)
英文摘要	New Horizons mission observations show that the small satellites Styx, Nix, Kerberos and Hydra, of the Pluto-Charon system, have not tidally spun-down to near synchronous spin states and have high obliquities with respect to their orbit about the Pluto-Charon binary (Weaver, 2016). We use a damped mass spring model within an N-body simulation to study spin and obliquity evolution for single spinning non round bodies in circumbinary orbit. Simulations with tidal dissipation alone do not show strong obliquity variations from tidally induced spin-orbit resonance crossing and this we attribute to the high satellite spin rates and low orbital eccentricities. However, a tidally evolving Styx exhibits intermittent obliquity variations and episodes of tumbling. During a previous epoch where Charon migrated away from Pluto, the minor satellites could have been trapped in orbital mean motion inclination resonances. An outward migrating Charon induces large variations in Nix and Styx's obliquities. The cause is a commensurability between the mean motion resonance frequency and the spin precession rate of the spinning body. As the minor satellites are near mean motion resonances, this mechanism could have lifted the obliquities of all four minor satellites. The high obliquities need not be primordial if the minor satellites were at one time captured into mean motion resonances. (C) 2017 Elsevier Inc. All rights reserved.
WOS关键词	SOLAR-SYSTEM ; CHAOTIC ROTATION ; TIDAL EVOLUTION ; GIANT PLANETS ; SPIN ; ORIGIN ; BODIES ; RESONANCE ; DYNAMICS ; ORBIT
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000402849700008
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23033]
专题	中国科学院紫金山天文台
通讯作者	Quillen, Alice C.
作者单位	1.Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA 2.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Namur, Dept Math, 8 Rempart de la Vierge, B-5000 Namur, Belgium 4.Univ Namur, Namur Ctr Complex Syst naXys, 8 Rempart de la Vierge, B-5000 Namur, Belgium
推荐引用方式 GB/T 7714	Quillen, Alice C.,Nichols-Fleming, Fiona,Chen, Yuan-Yuan,et al. Obliquity evolution of the minor satellites of Pluto and Charon[J]. ICARUS,2017,293:94-113.
APA	Quillen, Alice C.,Nichols-Fleming, Fiona,Chen, Yuan-Yuan,&Noyelles, Benoit.(2017).Obliquity evolution of the minor satellites of Pluto and Charon.ICARUS,293,94-113.
MLA	Quillen, Alice C.,et al."Obliquity evolution of the minor satellites of Pluto and Charon".ICARUS 293(2017):94-113.