Rotation velocities in Pleiades and {alpha}Per

We investigate to what extent the spin axes of stars in young open clusters are aligned. Assuming that the spin vectors lie uniformly within a conical section, with an opening...本研究旨在探究年轻疏散星团内恒星自转轴的对齐程度。我们假设恒星的自旋矢量均匀分布于一个具有张角的圆锥区域内，其张角……