Kinematics of the Gould Belt based on open clusters

摘要: We have redetermined the kinematic parameters of Gould Belt using currently available data on motion nearby young (log t < 7.91) open clusters, OB associations, and moving stellar groups. Our modeling shows that residual velocities reach their maximum values −4 km s−1 for rotation (in direction Galactic rotation) +4 expansion at a distance from center ≈300 pc. taken following center: R0 = 150 pc l0 128°. The whole structure is shown to move relative local standard rest velocity 10.7 ± 0.7 in l 274° 4° b −1° 3°. Using derived velocity, we estimated virial mass be 1.5 × 106M⊙.