Hints for a bar in M31 kinematics and morphology

As the nearest large spiral galaxy, M 31 provides a unique opportunity to study the structure and evolutionary history of this galaxy type in great detail. Among the many...作为距离地球最近的大型旋涡星系，M31为我们细致研究此类星系的结构与演化历史提供了独特机遇。在诸多……