From Nearby Stars to Solar Kinematics: New Insight from Gaia DR2 Catalogue

Abstract

The motion of stars has an important role in understanding the kinematics and dynamics of celestial phenomena in the galaxy. In the present day, the new up to date stars catalogue from Gaia DR2 has provided new insight in the context of stars kinematics in the Galaxy. We attempt to analyze the FGK Main-Sequence nearby stars from Gaia DR2 catalogue to investigate the Solar kinematics. A data reduction and analytic classification are implemented in this work to obtain the well-selected stars. Our calculation shows that the Solar kinematics is typically (,,) = (15.136 ± 0.408, 11.454 ± 0.481, 8.899 ± 0.163) km/s after being corrected with asymmetric drift  = (8.261 ± 0.160) km/s for a typical position according to our selected stars in this work.