Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cha%26a..10...98t&link_type=abstract
Chinese Astronomy and Astrophysics, Volume 10, Issue 2, p. 98-102.
Astronomy and Astrophysics
Astrophysics
Galaxy: Kinematics, Stars: Late-Type
Scientific paper
Recently available radial velocity data of K-stars are used for an analysis of their kinematics in the solar neighbourhood. Solution for the mean solar motion is u0 = -9.1 +/- 2.2, v0 = -20.4 +/- 2.6, w0 = -5.2 +/- 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 centre) 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 Jun-Liang
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