A Schwarzschild model of the Galactic bar with initial density from N-body simulations

	A Schwarzschild model of the Galactic bar with initial density from N-body simulations
	Wang, Yougang 1; Mao, Shude 2,3; Long, Richard J.2,3; Shen, Juntai4
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2013-11-01
卷号	435 期号:4 页码:3437-3443
关键词	Galaxy: bulge galaxies: kinematics and dynamics galaxies: structure
英文摘要	Using the potential from N-body simulations, we construct the Galactic bar models with the Schwarzschild method. By varying the pattern speed and the position angle of the bar, we find that the best-fitting bar model has pattern speed (p) = 40 km s(-1) kpc(-1), and bar angle theta(bar) = 45 degrees. N-body simulations show that the best-fitting model is stable for more than 1.5 Gyr. Combined with the results in Wang et al., we find that the bar angle and/or the pattern speed are not well constrained by Bulge Radial Velocity Assay data in our Schwarzschild models. The proper motions predicted from our model are slightly larger than those observed in four fields. In the future, more kinematic data from the ground- and space-based observations will enable us to refine our model of the Milky Way bar.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	RADIAL-VELOCITY ASSAY ; MEASURE GALAXY MODELS ; DARK-MATTER HALO ; RED-CLUMP GIANTS ; GRAVITATIONAL LENSING EXPERIMENT ; SUPERMASSIVE BLACK-HOLE ; STELLAR PROPER MOTIONS ; MILKY-WAY ; ROTATION CURVE ; INNER GALAXY
收录类别	SCI
语种	英语
WOS记录号	WOS:000325774700053
公开日期	2014-12-26
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15424]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England 4.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yougang,Mao, Shude,Long, Richard J.,et al. A Schwarzschild model of the Galactic bar with initial density from N-body simulations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,435(4):3437-3443.
APA	Wang, Yougang,Mao, Shude,Long, Richard J.,&Shen, Juntai.(2013).A Schwarzschild model of the Galactic bar with initial density from N-body simulations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,435(4),3437-3443.
MLA	Wang, Yougang,et al."A Schwarzschild model of the Galactic bar with initial density from N-body simulations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 435.4(2013):3437-3443.