Statistics – Computation
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acaps...6....6t&link_type=abstract
(Acta Astrophysica Sinica, vol. 6, no. 1, 1986, p. 6-11) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 10, June 1986
Statistics
Computation
Cool Stars, K Stars, Kinematic Equations, Late Stars, Solar System, Stellar Motions, Computational Astrophysics, Galactic Nuclei, Milky Way Galaxy, Radial Velocity, Solar Position, Star Distribution, Stellar Evolution
Scientific paper
Recently available radial velocity data of K-stars are used for an analysis of their kinematics in the solar neighborhood. Solution for the mean solar motion is nu(0) = -9.1 + or - 2.2, v(0) = -20.4 + or - 2.6, w(0) = -5.2 + or - 2.5 km/s, in fair agreement with previous determinations. Another solution using proper motions from the SAO Catalogue shows no significant differences. After dividing the stars into groups according to their w-velocities, it was found that the younger disk stars have an outward (away from the Galactic center) motion of about 7 km/s relative to the older disk stars. Also, the mean solar motion found for these nearby K-stars appears to be consistent with the kinematics of the Gould's Belt.
Tian Kai-Ping
Zhao Jian-Ling
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