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Speckle interferometry at the Blanco and SOAR telescopes in 2008 and 2009
Andrei Tokovinin, Brian D. Mason, William I. Hartkopf
The results of speckle interferometric measurements of binary and multiple stars conducted in 2008 and 2009 at the Blanco and SOAR 4-m telescopes in Chile are presented. A total of…
A catalog of visual double and multiple stars with eclipsing components
P. Zasche, M. Wolf, W. I. Hartkopf +4
A new catalog of visual double systems containing eclipsing binaries as one component is presented. The main purpose of this catalog is to compile a complete list of all known mult…
Cool Subdwarf Investigations II: Multiplicity
Wei-Chun Jao, Brian D. Mason, William I Hartkopf +2
Cool subdwarfs of types K and M are the fainter counterparts of cool main sequence dwarfs that dominate the Galactic population. In this paper we present the results of an optical…