New observations of polar ring galaxies

被引:0
作者
Sparke, LS [1 ]
Cox, AL [1 ]
机构
[1] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
来源
XVTH IAP MEETING DYNAMICS OF GALAXIES: FROM THE EARLY UNIVERSE TO THE PRESENT | 2000年 / 197卷
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Polar ring systems are 'multi-spin galaxies' (Rubin 1994): different components have discrepant axes of rotation. The outer gas-rich material in polar orbit appears to be a late acquisition; it shares neither the rotation nor the symmetry axis of the early-type inner galaxy, which contains little gas and consists largely of old stars. These systems represent galaxy mergers that are not yet completed.
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页码:119 / 124
页数:6
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