论文标题
系统不对称：在真实和模拟星系中的\ hi \概况不对称的比较
Systematically Asymmetric: A comparison of \hi\ profile asymmetries in real and simulated galaxies
论文作者
论文摘要
我们检查了银河系HI速度曲线的不同措施。我们介绍了逐通道不对称的渠道和平等速度统计量，以量化不对称性。使用模拟星系样品，我们检查了这些和标准的偏斜度形态统计量如何取决于各种观察效应，包括视角和倾斜度。我们发现，与其他形态计量学相比，我们新引入的逐通道不对称性对视角和倾斜度的影响不太敏感。将我们的统计数据应用于Whisp Hi Galaxy样品，我们还发现逐通道不对称的频道是更好地分类的不对称轮廓的更好指标。此外，我们发现平等空间的偏斜性可用于识别具有深度中央倾角的曲线，而无需直观检查。
We examine different measures of asymmetry for galaxy HI velocity profiles. We introduce the channel-by-channel asymmetry and the velocity-of-equality statistics to quantify profile asymmetries. Using a sample of simulated galaxies, we examine how these and the standard lopsidedness morphometric statistic depend on a variety of observational effects including the viewing angle and inclination. We find that our newly introduced channel-by-channel asymmetry is less sensitive to the effects of viewing angle and inclination than other morphometrics. Applying our statistics to the WHISP HI galaxy sample, we also find that the channel-by-channel asymmetry, is a better indicator of visually-classified asymmetric profiles. In addition, we find that the lopsidedness-velocity of equality space can be used to identify profiles with deep central dips without visual inspection.
