Resonant relaxation and the warp of the stellar disc in the Galactic Centre

被引：115

作者：

Kocsis, Bence ^{[1
,2
]}

Tremaine, Scott ^{[2
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Inst Adv Study, Princeton, NJ 08540 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2011年 / 412卷 / 01期

关键词：

celestial mechanics; Galaxy: centre; Galaxy: nucleus; MASSIVE BLACK-HOLE; TWISTED ACCRETION DISKS; N-BODY SIMULATIONS; SGR-A-ASTERISK; YOUNG STARS; MILKY-WAY; NGC; 4258; S-STARS; SYSTEMS; EVOLUTION;

D O I：

10.1111/j.1365-2966.2010.17897.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of the spatial distribution and kinematics of young stars in the Galactic Centre can be interpreted as showing that the stars occupy one, or possibly two, discs of radii similar to 0.05-0.5 pc. The most prominent ('clockwise') disc exhibits a strong warp: the normals to the mean orbital planes in the inner and the outer third of the disc differ by similar to 60 degrees. Using an analytical model based on Laplace-Lagrange theory, we show that such warps arise naturally and inevitably through vector resonant relaxation between the disc and the surrounding old stellar cluster.

引用

页码：187 / 207

页数：21

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