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arXiv · 0707.2903

Speckle Interferometry of Metal-Poor Stars in the Solar Neighborhood. I

D. A. Rastegaev·Yu. Yu. Balega·E. V. Malogolovets
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Abstract

We report the results of speckle-interferometric observations of 109 high proper-motion metal-poor 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$^\circ$~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.

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D. A. Rastegaev, Yu. Yu. Balega, E. V. Malogolovets. 2007-07-20. Speckle Interferometry of Metal-Poor Stars in the Solar Neighborhood. I. https://doi.org/10.1134/s1990341307030042

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