  The results of speckle interferometric observations of 115 metal-poor stars
[m/H]<-1 within 250 pc from the Sun and with proper motions mu <= 0.2"/yr, made
with the 6-m telescope of the Special Astrophysical Observatory of the Russian
Academy of Sciences, are reported. Close companions with separations ranging
from 0.034" to 1" were observed for 12 objects - G76-21, G59-1, G63-46,
G135-16, G168-42, G141-47, G142-44, G190-10, G28-43, G217-8, G130-7, and G89-14
- eight of them are astrometrically resolved for the first time. The newly
resolved systems include one triple star - G190-10. If combined with
spectroscopic and visual data, our results imply a
single:binary:triple:quadruple star ratio of 147:64:9:1 for a sample of 221
primary components of halo and thick-disk stars.

Astrophysics