Properties of metal-poor subsystems of RR Lyraes with low peculiar velocity (top row) and high peculiar velocity (bottom row). The first column shows histograms in the rotation velocities. The second column shows the distribution of Z (see text for details), and the curves approximate the reconstructed distributions with exponential law The third column shows relations between maximum height above the galactic plane and metallicity.discussion in the text | privious figure | next figure