MOVING STAR-CLUSTERS IN THE SOLAR NEIGHBO RHOOD

Two cluster analysis algorithms - the principal stars method and hiera rchical clustering - are used to identify moving star clusters in the velocity space in a sample of 1947 single and multiple stars in the cl ose solar neighborhood with space velocities taken from the Gliese and Jahreiss catalog. Five rich moving clusters have been identified at h igh confidence level. These clusters contain from 30 to 40 stars whose velocities do not differ by more than 6 km s(-1) from the centroid ve locity. Rich moving clusters include about 10% of all stars with known space velocities.