论文标题
建模螺旋星系
Modelling Spiral Galaxies
论文作者
论文摘要
我们开发了一种新技术，以配备螺旋星系模型以及与观测值相匹配的自洽动力学。我们应用我们的技术并使用动态星形介质（ISM）为银河系构建模型。在模拟中，该模型出现了一个四臂螺旋结构，与在银河系ISM中观察到的模型相似。此外，在我们的模型中，牛仔裤不稳定性为ISM中原子氢的速度分散剂提供了解释。如果我们选择速度分散在观察到的速度色散，则这种不稳定性从我们的模型中消失。我们的模型使用重生，暗物质，该暗物质位于光盘中，并且动态冷。这使我们的模型成为BOSMA效应的典型例子。
We develop a new technique to equip models of spiral galaxies with self-consistent dynamics that match observations. We apply our technique and construct a model for the Milky Way with a dynamical interstellar medium (ISM). In simulations a four-arm spiral structure emerges from this model that is similar to the one observed in the Milky Way's ISM. Further, in our model the Jeans instability offers an explanation for the observed velocity dispersion of atomic hydrogen in the ISM; this instability vanishes from our model if we choose a velocity dispersion just above the observed one. Our model uses baryonic, dark matter, which resides in the disc and is dynamically cold. This makes our model a typical example for the Bosma effect.
