论文标题
NGC环6217的年轻恒星种群的空间规律性
Spatial regularity of the young stellar population in the ring of NGC 6217
论文作者
论文摘要
各种物理过程对星系磁盘中分子云的空间和时间分布的相对贡献尚未得到充分研究。年轻恒星种群在螺旋和环结构中分布的空间规律性是研究这一贡献的良好测试。我们基于对Galex Ultraviolet，光学UBVRI和HALPHA表面光度法数据的分析，研究了未禁止的螺旋星系NGC 6217中环和螺旋臂的光度特性。银河系中的环位于旋转区域附近。发现了沿星系环的年轻恒星种群分布的空间规律性。间距的特征尺度约为700 pc。同时，我们在NGC 6217的螺旋臂的年轻恒星种群的分布中没有发现类似的规律性。沿着螺旋臂的年轻恒星组浓度的空间规律性是一种非常罕见的现象，并且从未在银河系环中建立过。
The relative contribution of various physical processes to the spatial and temporal distribution of molecular clouds and star-forming regions in the disks of galaxies has not been fully studied. The spatial regularity in the distribution of the young stellar population in spiral and ring structures is a good test to study this contribution. We investigate photometric properties of the ring and spiral arms in the barred spiral galaxy NGC 6217 based on analysis of GALEX ultraviolet, optical UBVRI and Halpha surface photometry data. The ring in the galaxy is located near the corotation area. A spatial regularity in the distribution of the young stellar population along the galaxy ring was found. The characteristic scale of spacing is about 700 pc. At the same time, we did not find a similar regularity in the distribution of the young stellar population along the spiral arms of NGC 6217. The spatial regularity in concentration of young stellar groupings along spiral arms is a quite rare phenomenon, and it has never been found before in galactic rings.
