The Flow through the Arms of Normal and Barred-Spiral Galaxies

被引：0
作者：
Patsis, P. A. [1 ]
机构：
[1] Acad Athens, Res Ctr Astron, GR-11527 Athens, Greece
来源：
CHAOS IN ASTRONOMY, CONFERENCE 2007 | 2009年
关键词：
STELLAR DYNAMICS; GASEOUS DISKS; ORBITS;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We examine the flow at the arms of spiral galaxies from a qualitative point of view. In particular we investigate the properties in cases of ordered and chaotic stellar flows. Ordered flows are associated with normal (non-barred) spiral galaxies, while chaotic arms appear in barred-spiral systems. The two cases are characterized by different forcing at corotation. The chaotic orbits that reinforce the spiral arms traverse also the bar region and are associated with the outer boxy isophotes surrounding early type bars. Chaotic spiral arms either stop at an azimuth smaller than pi/2, or present clear gaps at this angle.
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收藏
页码：33 / 44
页数：12
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