Kinematic analysis of solar-neighborhood stars based on RAVE4 data

We consider stars with radial velocities, proper motions, and distance estimates from the RAVE4 catalogue. Based on a sample of more than 145 000 stars at distances r < 0.5 kpc, we have found the following kinematic parameters: = (9.12, 20.80, 7.66) +/- (0.10, 0.10, 0.08) km s(-1), Omega(0) = 28.71 +/- 0.63 km s(-1) kpc(-1), and Omega(0) (') = -4.28 +/- 0.11 km s(-1) kpc(-2). This gives the linear rotation velocity V (0) = 230 +/- 12 km s(-1) (for the adopted R (0) = 8.0 +/- 0.4 kpc) and the Oort constants A = 17.12 +/- 0.45 km s(-1) kpc(-1) and B = -11.60 +/- 0.77 km s(-1) kpc(-1). The 2D velocity distributions in the UV, UW, and VW planes have been constructed using a local sample, r < 0.25 kpc, consisting of similar to 47 000 stars. A difference of the UV velocity distribution from the previously known ones constructed from a smaller amount of data has been revealed. It lies in the fact that our distribution has an extremely enhanced branch near the Wolf 630 peak. A previously unknown peak at (U, V) = (-96, -10) km s(-1) and a separate new feature in the Wolf 630 stream, with the coordinates of its center being (U, V) = (30, -40) km s(-1), have been detected.