Search for Stellar Streams Based on Data from the RAVE5 and Gaia TGAS
  Catalogues
  We have analyzed the space velocities of stars with the proper motions and
trigonometric parallaxes from the Gaia TGAS catalogue in combination with the
line-of-sight velocities from the RAVE5 catalogue. In the (V,\sqrt{U^2+2V^2})
velocity plane we have identified three clumps, BB17-1, BB17-2, and BB17-3, in
the region of large velocities (V<-150 km/s). The stars of the BB17-1 and
BB17-2 clumps are associated with the kinematic groups VelHel-6 and VelHel-7
detected previously by Helmi et al. We give the greatest attention to the
BB17-3 clump. The latter is shown to be most closely linked with the debris of
the globular cluster \omega Cen. In the BB17-3 clump we have identified 28
stars with a low velocity dispersion with respect to the center of their
distribution. All these stars have very close individual age estimates: \log
t\approx 10. The distribution of metallicity indices in this sample is typical
for the stars of the globular cluster \omega Cen. In our opinion, the BB17-3
clump can be described as a homogeneous stream in the debris of the cluster
\omega Cen.
