动力学气体输运框架下星系旋转曲线的局部形态与不对称性：NGC 3198
Local morphology and asymmetry of galactic rotation curves in a kinetic gas transport framework: NGC 3198
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中文总结 AI 辅助
研究在动力学气体输运框架下，利用NGC 3198两侧氢原子密度分布，基于特定方程重建旋转曲线，再现其大规模行为及局部形态与不对称性，揭示旋转曲线局部结构与氢原子分布及气体输运过程紧密相关。
中文摘要 AI 辅助
我们研究了在动力学气体输运描述框架内，能否直接从观测到的氢原子分布重建非平均化星系旋转曲线的精细结构和不对称性。利用星系NGC 3198靠近（东北）侧和远离（西南）侧单独的氢原子密度分布，基于先前文献中推导的方程重建相应旋转曲线。结果表明，重建曲线不仅再现了观测旋转曲线大致平坦的大规模行为，还分别再现了星系盘东北和西南侧的详细局部形态与不对称性。所得结果表明，星系旋转曲线的局部结构与局部氢原子分布紧密相连，是星系盘中动力学气体输运过程的自然结果。
英文摘要
We investigate whether the observed fine structure and asymmetry of non-averaged galactic rotation curves can be reconstructed directly from the observed HI distribution within the framework of a kinetic gas transport description. Using the observed HI density profiles separately for the approaching (north-eastern) side and the receding (south-western) side of the galaxy NGC~3198, we reconstruct the corresponding rotation curves based on the equation previously derived in \citet{Lipovka2022}. It is shown that the reconstructed curves reproduce not only the approximately flat large-scale behaviour of the observed rotation curves, but also their detailed local morphology and asymmetry separately for the north-eastern and south-western sides of the galactic disk. The obtained results indicate that the local structure of galactic rotation curves is closely connected with the local HI distribution and arises naturally as a consequence of kinetic gas transport processes in galactic disks.
