Correlation between the two-armed $V_R$ spiral in the $Z$--$V_Z$ plane and moving groups

Yan Xu, Chao Liu, Chengdong Li +5

We use a cross-matched sample of 3.7 million stars from Gaia DR3 and LAMOST DR7 to investigate the velocity substructures in the Milky Way disk. The median radial velocity $V_R$ as…