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Orbital classification in an N-body bar
Wang, Yougang1; Athanassoula, E.2; Mao, Shude1,3,4
2016-12-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号463期号:4页码:3499-3512
摘要The dynamics and evolution of any galactic structure are strongly influenced by the properties of the orbits that constitute it. In this paper, we compare two orbit classification schemes, one by Laskar [numerical analysis of fundamental frequencies (NAFF)], and the other by Carpintero and Aguilar (CA), by applying both of them to orbits obtained by following individual particles in a numerical simulation of a barred galaxy. We find that, at least for our case and some provisos, the main frequencies calculated by the two methods are in good agreement: for 80 per cent of the orbits the difference between the results of the two methods is less than 5 per cent for all three main frequencies. However, it is difficult to evaluate the amount of regular or chaotic bar orbits in a given system. The fraction of regular orbits obtained by the NAFF method strongly depends on the critical frequency drift parameter, while in the CA method the number of fundamental frequencies strongly depends on the frequency difference parameter L-r and the maximum integer used for searching the linear independence of the fundamental frequencies. We also find that, for a given particle, in general the projection of its motion along the bar minor axis is more regular than the other two projections, while the projection along the intermediate axis is the least regular.
文章类型Article
关键词Galaxy: Bulge Galaxies: Kinematics And Dynamics Galaxies: Structure
WOS标题词Science & Technology ; Physical Sciences
资助者Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; 973 Program(2014CB845700) ; 973 Program(2014CB845700) ; National Science Foundation of China(11390372 ; National Science Foundation of China(11390372 ; Sino-French 'Lia-Origins' project ; Sino-French 'Lia-Origins' project ; NSF(1066293) ; NSF(1066293) ; Ministry of Finance(ZDYZ2008-2) ; Ministry of Finance(ZDYZ2008-2) ; 11333003 ; 11333003 ; Y011061001 ; Y011061001 ; Y122071001) ; Y122071001) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; 973 Program(2014CB845700) ; 973 Program(2014CB845700) ; National Science Foundation of China(11390372 ; National Science Foundation of China(11390372 ; Sino-French 'Lia-Origins' project ; Sino-French 'Lia-Origins' project ; NSF(1066293) ; NSF(1066293) ; Ministry of Finance(ZDYZ2008-2) ; Ministry of Finance(ZDYZ2008-2) ; 11333003 ; 11333003 ; Y011061001 ; Y011061001 ; Y122071001) ; Y122071001)
DOI10.1093/mnras/stw2301
关键词[WOS]SPECTRAL STELLAR DYNAMICS ; FREQUENCY MAP ANALYSIS ; GLOBAL DYNAMICS ; CHAOTIC MOTION ; HAMILTONIAN-SYSTEMS ; GALAXIES S(4)G ; SPITZER SURVEY ; GALACTIC BAR ; MODELS ; EVOLUTION
收录类别SCI
语种英语
资助者Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; 973 Program(2014CB845700) ; 973 Program(2014CB845700) ; National Science Foundation of China(11390372 ; National Science Foundation of China(11390372 ; Sino-French 'Lia-Origins' project ; Sino-French 'Lia-Origins' project ; NSF(1066293) ; NSF(1066293) ; Ministry of Finance(ZDYZ2008-2) ; Ministry of Finance(ZDYZ2008-2) ; 11333003 ; 11333003 ; Y011061001 ; Y011061001 ; Y122071001) ; Y122071001) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; 973 Program(2014CB845700) ; 973 Program(2014CB845700) ; National Science Foundation of China(11390372 ; National Science Foundation of China(11390372 ; Sino-French 'Lia-Origins' project ; Sino-French 'Lia-Origins' project ; NSF(1066293) ; NSF(1066293) ; Ministry of Finance(ZDYZ2008-2) ; Ministry of Finance(ZDYZ2008-2) ; 11333003 ; 11333003 ; Y011061001 ; Y011061001 ; Y122071001) ; Y122071001)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000393568200007
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8269
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
2.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille 13, France
3.Tsinghua Univ, Dept Phys, Ctr Astrophys, Beijing 100084, Peoples R China
4.Univ Manchester, Ctr Astrophys, Jodrell Bank, Manchester M13 9PL, Lancs, England
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Wang, Yougang,Athanassoula, E.,Mao, Shude. Orbital classification in an N-body bar[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,463(4):3499-3512.
APA Wang, Yougang,Athanassoula, E.,&Mao, Shude.(2016).Orbital classification in an N-body bar.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,463(4),3499-3512.
MLA Wang, Yougang,et al."Orbital classification in an N-body bar".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 463.4(2016):3499-3512.
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