论文标题
与银河盘的加热相关的非扩展过程
Non-extensive processes associated with heating of the Galactic disc
论文作者
论文摘要
我们通过从日内瓦 - 欧洲山脉目录中提取的太空速度$ u $，$ v $和$ w $的动态分析了银河盘加热的机制。为此，我们使用基于非扩展统计力学的模型，在其中得出了量化非高斯效应的概率分布函数。此外，我们发现给定恒星年龄的偏差$ q-1 $遵循非随机行为。结果，$ q $ index的行为表明垂直于银河平面的垂直组件$ w $不会随机````加热'''，这与以前的作品不同意，这些作品将$ w $的演变归因于随机性。最后，我们的结果为这一问题带来了新的观点，并通过考虑非强大的统计模型的眼光来研究银河运动学成分，这些模型考虑了非高斯效应。
We analyse the mechanisms ruling galactic disc heating through the dynamics of space velocities $U$, $V$ and $W$, extracted from the Geneva-Copenhagen catalogue. To do this, we use a model based on non-extensive statistical mechanics, where we derive the probability distribution functions that quantify the non-Gaussian effects. Furthermore, we find that the deviation $q-1$ at a given stellar age follows non-random behaviour. As a result, the $q$-index behaviour indicates that the vertical component $W$, perpendicular to the Galactic plane, does not ``heat up'' at random, which is in disagreement with previous works that attributed the evolution of $W$ to randomness. Finally, our results bring a new perspective to this matter and open the way for studying Galactic kinematic components through the eyes of more robust statistical models that consider non-Gaussian effects.
