论文标题
风：附近螺旋星系的H $α$运动学调查 - 附近磁盘型星系的垂直扰动
WiNDS: An H$α$ kinematics survey of nearby spiral galaxies -- Vertical perturbations in nearby disk-type galaxies
论文作者
论文摘要
我们介绍了附近磁盘星系调查（风）中的波浪，其中包括附近的40个低倾斜磁盘星系，通过H $α$高分辨率的Fabry Perot干涉法观察到。风由12个新的星系观测和28个数据存档观测值组成，这些观测值是从不同的星系调查获得的。我们得出了对这些低封闭式晚期星系的银河系磁盘中垂直速度流的可能存在的分析的二维速度速度场，并使用速度残留图得出，这些速度残留图从轴对称旋转模型到旋转速度图的减法。在几乎面对面星系的视线速度中，大型且全球相干的流量可能与磁盘相对于其中平面的大垂直位移有关。我们的目标是表征当地宇宙中出现的频繁垂直扰动，例如以银河系观察到的扰动。我们目前可用的数据使我们能够识别20美元的风星系，具有强速度扰动，这与垂直扰动的银河系磁盘一致。
We present the Waves in Nearby Disk galaxies Survey (WiNDS) consisting of 40 nearby low inclination disk galaxies observed through H$α$ high-resolution Fabry Perot interferometry. WiNDS consists of 12 new galaxy observations and 28 data archived observations obtained from different galaxy surveys. We derive two-dimensional line-of-sight velocity fields that are analyzed to identify the possible presence of vertical velocity flows in the galactic disks of these low-inclination late-type galaxies using velocity residual maps, derived from the subtraction of an axisymmetric rotation model to rotational velocity map. Large and globally coherent flows in the line-of-sight velocity of nearly face-on galaxies can be associated with large vertical displacement of the disk with respect to its mid-plane. Our goal is to characterize how frequent vertical perturbations, such as those observed in the Milky Way, arise in the Local Universe. Our currently available data have allowed us to identify 20$\%$ of WiNDS galaxies with strong velocity perturbations that are consistent with vertically perturbed galactic disks.
