Kinematics of Gould Belt Based on Open Clusters (Bobylev, 2006)

Details Kinematics of Gould Belt Based on Open Clusters (Bobylev, 2006) Kinematics of Gould Belt Based on Open Clusters (Bobylev, 2006)

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ycat.100320906b&link_type=abstract

VizieR On-line Data Catalog: J/PAZh/32/906. Originally published in: 2006PAZh...32..906B; 2006AstL...32..816B

Physics

Clusters: Open, Associations: Stellar, Space Velocities, Radial Velocities

Scientific paper

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

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