The Astrophysical Journal · 1964 · 33 citations · 0 references
Ninety-four visual binaries with separations greater than 25" were observed in three colors. These ta,in combination with the spectral classifications available in the literature, led to results which can summarized as follows: (1) Good confirmation was found for the theories of common origin and evolu)n. Each component apparently evolved as a single star without close-binary-type interactions. (2) Prosional distances, intrinsic separations, and periods were determined for each system. (3) No correlations re found between separation and absolute magnitude. (4) An upper limit of about 40000 a.u. was found r the intrinsic separations of these systems.