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The orbital configuration of the two interacting Jupiters in HD 155358 system
Ma, Da-Zhu1,2,3; Fu, Yan-Ning1; Wang XL(王晓丽)4; Ma, Da-Zhu(Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China)
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2017-08-01
卷号470期号:1页码:706-712
DOI10.1093/mnras/stx1230
产权排序第4完成单位
收录类别SCI
关键词Methods: Numerical Planetary Systems
摘要Recent observation reveals two interacting Jupiters possibly trapped in a 2: 1 mean motion resonance (MMR) around the star HD 155358. For the 2:1 MMR, Beauge et al. found that as long as the orbital decay was sufficiently slow, the trapped planets should also be in apsidal co-rotation. So it is very interesting to explore whether HD 155358 did undergo such an evolution and presents an apsidal co-rotation. Based on the existing results of spectroscopic orbital determination, the global dynamics of the system shows that the two planets are in an apsidal co-rotation if the eccentricity of the outer planet (ec) takes values very close to the lower limit of its 1 sigma confidence interval. This makes us conjecture that the globally minimizing solution could be missed in the previous orbital determination. Using an efficient global optimization method, we do find a better solution, reducing chi(2) from 1.4 to 1.2. This new solution is significantly different from the previous one, and in particular, with smaller ec. However, the increased possibility for the system to be trapped in a 2: 1 MMR with apsidal co-rotation is still not high. A set of simulations of the adiabatic convergent migration process are then performed. The results consistently indicate that the 2: 1 MMR forms before apsidal co-rotation. Finally, the long-term stability of the formed system and of its resonant structure is extensively explored, and the resulting statistics are given. A conclusion is that the 2: 1 MMR with apsidal co-rotation is a very stable structure.
项目资助者Natural Science Foundation of China (NSFC)(11263003, 11533004, 11603072)
语种英语
学科领域天文学
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000406842600042
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MEAN-MOTION RESONANCE ; LINED SPECTROSCOPIC BINARIES ; RADIAL-VELOCITY DATA ; PLANETARY SYSTEM ; EXTRASOLAR PLANETS ; GIANT PLANETS ; EVOLUTION ; MIGRATION ; ORIGIN ; DISC
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11881
专题丽江天文观测站(南方基地)
通讯作者Ma, Da-Zhu(Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China)
作者单位1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.School of Science, Hubei University for Nationalities, Enshi 445000, China
4.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
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Ma, Da-Zhu,Fu, Yan-Ning,Wang XL,et al. The orbital configuration of the two interacting Jupiters in HD 155358 system[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,470(1):706-712.
APA Ma, Da-Zhu,Fu, Yan-Ning,Wang XL,&Ma, Da-Zhu.(2017).The orbital configuration of the two interacting Jupiters in HD 155358 system.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,470(1),706-712.
MLA Ma, Da-Zhu,et al."The orbital configuration of the two interacting Jupiters in HD 155358 system".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 470.1(2017):706-712.
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