Kinematics of B-F Stars as a Function of Their Dereddened Color from
  Gaia and PCRV Data
  Parallaxes with an accuracy better than 10% and proper motions from the Gaia
DR1 TGAS catalogue, radial velocities from the PCRV, Tycho-2 photometry,
PARSEC, MIST, YaPSI, BaSTI isochrones, and the most accurate reddening and
extinction estimates have been used to analyze the kinematics of 9543 thin-disk
B-F stars as a function of their dereddened color. These stars are located on
the Hertzsprung-Russell diagram relative to the isochrones with a high
accuracy. This has allowed me to conclude that the reddening and extinction
were significantly underestimated in some kinematic studies of other authors.
The median accuracy of the velocity components U, V, W in this study is 1.7
km/s, although outside the range $-0.1<(B_T-V_T)_0<0.5$ the kinematic
characteristics are noticeably biased due to the incompleteness of the sample.
We have confirmed the variations in the mean velocity of stars relative to the
Sun and the stellar velocity dispersion as a function of their dereddened color
known from the Hipparcos data. Given the age estimates for the stars under
consideration from the TRILEGAL model and the Geneva-Copenhagen survey, these
variations may be considered as variations as a function of the age. A
comparison of our results with the results of other studies of the stellar
kinematics near the Sun has shown that selection and reddening underestimation
explain almost completely the discrepancies between the results. The
dispersions and mean velocities from the results of reliable studies fit into a
$\pm2$ km/s corridor, while the ratios $\sigma_V/\sigma_U$ and
$\sigma_W/\sigma_U$ fit into $\pm0.05$. Based on all reliable studies in the
range $-0.1<(B_T-V_T)_0<0.5$, i.e., for an age from 0.23 to 2.4 Gyr, we have
found that the stellar velocity dispersions in km/s are proportional to the age
in Gyr raised to the power $\beta_U=0.33$, $\beta_V=0.285$, and $\beta_W=0.37$.
