论文标题
测量单个模拟快照的条形图速度
Measuring bar pattern speeds from single simulation snapshots
论文作者
论文摘要
我们描述了从模拟禁止星系的单个快照中同时测量方向角$ψ$和模式速度$ω$的方法。与以前的尝试不同，我们的方法是公正的，精确的，并且从某种意义上说，$ψ= \intΩ\ mathrm {d} t $。它可以扩展以获得旋转的速率和轴，即矢量$ \boldsymbolΩ$。我们提供实施我们方法的计算机代码。
We describe methods to measure simultaneously the orientation angle $ψ$ and pattern speed $Ω$ from single snapshots of simulated barred galaxies. Unlike previous attempts, our approach is unbiased, precise, and consistent in the sense that $ψ=\intΩ\mathrm{d}t$. It can be extended to obtain the rate and axis of rotation, i.e. the vector $\boldsymbolΩ$. We provide computer code implementing our method.
