标题： 重棒和轻螺旋——利用星系中的不对称性 显示英文标题

标题： Heavy Bars and Light Spirals -- Taking Advantage of Asymmetries in Galaxies

摘要： 我总结了一系列研究，其核心主题是利用非轴对称盘状结构（如棒和螺旋臂）。 通过测量这些结构产生的引力强度，我们可以测量它们的质量。 这种方法的优势在于，质量与光度比可以以独立于暗物质分布的方式加以限制。 通过对多种类型的星系进行考察，似乎可以发现形态与暗物质比例之间存在相关性。 显示英文摘要

摘要： I summarize a series of studies where the underlying theme is to exploit non-axisymmetry disk structures such as bars and spiral arms. By measuring the strength of gravitational forces from these structures we can measure the mass in them. The advantage of this approach is that mass to light ratios can be constrained in a way independent of the dark matter profile. By examining a variety of types of galaxies it appears that a correlation between morphology and dark matter fraction emerges.