Wide-Field Survey of Globular Clusters in M31. II. Kinematics of the Globular Cluster System**Based on observations with the Kitt Peak National Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under cooperative agreement with the National Science Foundation.

We present a kinematic analysis of the globular cluster (GC) system in M31, using the velocity data for 504 GCs including those for 150 GCs in our wide-field survey. The all GC system shows strong rotation, with rotation amplitude of vrot ∼ 190 km s−1, and weak rotation persists even for the outermost samples at | Y| ⩾ 5 kpc, where Y represents the projected distance from the major axis. The rotation-corrected velocity dispersion for the GC …