Rotation curve shapes and the Tully-Fisher relations

被引：1
|
作者：
Verheijen, M [1 ]
机构：
[1] Natl Radio Astron Observ, Charlottesville, VA 22903 USA
来源：
ASTROPHYSICS AND SPACE SCIENCE | 1999年 / 269卷 / 0期
关键词：
Rotation Curve; Dark Matter Halo; Kinematic Measure; Observational Uncertainty; Radio Astronomy Observatory;
D O I：
10.1023/A:1017063128321
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The scatter in the K'-band Tully-Fisher relation (TFr) is larger than can be expected from observational uncertainties when using the widths of global HI profiles of a volume limited, complete sample without any morphological selection criteria. This poster shows, however, that the observed scatter can be explained when considering the shapes of the galaxy rotation curves (RCs). Using V(m)ax from the RCs, it turns out that galaxies with rising RCs tend to lie on the low-velocity side of the TFr and those with declining RCs tend to lie on the high velocity side. The scatter in the K'-V-flat TFr is consistent with the measurement uncertainties.
引用
收藏
页码：671 / 672
页数：2
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