Kinematics of the Gould Belt Based on Open Clusters

Abstract

We have redetermined kinematic parameters of the Gould Belt using currently available data on the motion of nearby young (log t < 7.91) open clusters, OB associations, and moving stellar groups. Our modeling shows that the residual velocities reach their maximum values of -4 km/s for rotation (in the direction of Galactic rotation) and +4 km/s for expansion at a distance from the kinematic center of about 300 pc. We have taken the following parameters of the Gould Belt center: Ro=150 pc and lo=128 degrees. The whole structure is shown to move relative to the local standard of rest at a velocity of 10.7+-0.7 km/s in the direction l=274+-4degrees and b=-1+-3 degrees. Using the derived rotation velocity, we have estimated the virial mass of the Gould Belt to be 1.5E6 Solar mass.

arXiv comment15 pages, 6 figures

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Cited by in corpus (15)

• Dynamical Analysis of Nearby ClustErs. Automated astrometry from the ground: precision proper motions over wide field
• Dynamical Masses of Young M Dwarfs: Masses and Orbital Parameters of GJ 3305 AB, the Wide Binary Companion to the Imaged Exoplanet Host 51 Eri
• A kinematic study and membership analysis of the Lupus star-forming region
• Spatial Distribution and Kinematics of OB Stars
• Galactic Kinematics from a Sample of Young Massive Stars
• The Gould Belt, the de Vaucouleurs-Dolidze Belt, and the Orion Arm
• A kinematically hot population of young stars in the solar neighbourhood
• Ionized and neutral gas in the peculiar star/cluster complex in NGC 6946
• 3D maps of the local interstellar medium: searching for the imprints of past events
• Analysis of Galactic Rotation from Masers based on a Nonlinear Oort Model
• The System of Molecular Clouds in the Gould Belt
• Estimation of the Gould Belt scale height from T Tauri type stars in the Gaia DR2 catalogue
• Kinematics of T Tauri Stars Close to the Sun from the Gaia DR2 Catalogue
• A Search for a Globular Cluster whose Passage through the Galactic Disk Could Induce the Formation of the Gould Belt
• Kinematics of nearby OB3 stars with interstellar CaII line distances