Speckle interferometry of metal-poor stars in the solar neighborhood. I
Abstract
We report the results of speckle-interferometric observations of 109 high proper-motion metalpoor stars made with the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences. We resolve eight objects—G102-20, G191-55, BD+19° 1185A, G89-14, G87-45, G87-47, G111-38, and G114-25—into individual components and we are the first to astrometrically resolve seven of these stars. New resolved systems included two triple (G111-38, G87-47) and one quadruple (G89-14) star. The ratio of single-to-binary-to-triple-to-quadruple systems among the stars of our sample is equal to 71:28:6:1.
- Publication:
-
Astrophysical Bulletin
- Pub Date:
- September 2007
- DOI:
- 10.1134/S1990341307030042
- arXiv:
- arXiv:0707.2903
- Bibcode:
- 2007AstBu..62..235R
- Keywords:
-
- 97.20.Tr;
- 97.80.-d;
- Astrophysics
- E-Print:
- 8 pages, 4 figures, accepted to Astrophysical Bulletin