Could the 55 Cancri planetary system really be in the 3 : 1 mean motion resonance?

	Could the 55 Cancri planetary system really be in the 3 : 1 mean motion resonance?
	Ji, JH; Kinoshita, H ; Liu, L; Li, GY
	2003-03-10
Source Publication	ASTROPHYSICAL JOURNAL
Volume	585 Issue:2 Pages:L139-L142
Abstract	We integrate the orbital solutions of the planets orbiting 55 Cancri. In the simulations, we find that not only do the three resonant arguments theta(1) = lambda(1) - 3lambda(2) + 2 (ω) over tilde (1), theta(2) = lambda(1) - 3lambda(2) + 2 (ω) over tilde (2), and theta(3) = lambda(1) - 3lambda(2) + ((ω) over tilde (1) + (ω) over tilde (2)) librate, respectively, but the relative apsidal longitude Deltaomega also librates about 250degrees for millions of years. The results imply the existence of the 3 : 1 resonance and the apsidal resonance for the studied system. We emphasize that the mean motion resonance and apsidal locking can act as two important mechanisms for stabilizing the system. In addition, we further investigate the secular dynamics of this system by comparing the numerical results with those given by Laplace-Lagrange secular theory.
Keyword	Celestial Mechanics Methods : N-body Simulations Planetary Systems Stars : Individual (55 Cancri, Gj 876, Hd 12661, Hd 82943, Nu Andromedae, 47 Ursae Majoris)
WOS Headings	Science & Technology ; Physical Sciences
WOS Keyword	DYNAMICAL ANALYSIS ; GJ-876
Indexed By	SCI
Language	英语
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000181287300016
Citation statistics
Document Type	期刊论文
Identifier	http://libir.pmo.ac.cn/handle/332002/15830
Collection	太阳活动的多波段观测研究团组
Affiliation	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Natl Astron Observ Japan, Tokyo 1818588, Japan 4.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation GB/T 7714	Ji, JH,Kinoshita, H,Liu, L,et al. Could the 55 Cancri planetary system really be in the 3 : 1 mean motion resonance?[J]. ASTROPHYSICAL JOURNAL,2003,585(2):L139-L142.
APA	Ji, JH,Kinoshita, H,Liu, L,&Li, GY.(2003).Could the 55 Cancri planetary system really be in the 3 : 1 mean motion resonance?.ASTROPHYSICAL JOURNAL,585(2),L139-L142.
MLA	Ji, JH,et al."Could the 55 Cancri planetary system really be in the 3 : 1 mean motion resonance?".ASTROPHYSICAL JOURNAL 585.2(2003):L139-L142.

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