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A dynamical study of 12 wide visual binaries

Romanenko, L. G.; Kalinichenko, O. A.; Kisselev, A. A.

We have carried out the first dynamical studies of the relative motions of the components of 12 wide binaries: ADS 497, ADS 2427 (GL 130.1), ADS 3593, ADS 5436, ADS 6646, ADS 6783, ADS 9559 ( δ Boo), ADS 10329, ADS 10759 ( ψ Dra), ADS 14878, ADS 15229, and ADS 16558. The analysis is based on series of photographic observations made with the 26-inc…

A dynamical study of the wide hierarchic triple star ADS 10288

Kiselev, A. A.; Romanenko, L. G.; Gorynya, N. A.

We have performed the first dynamical study of the relative motions of the components of the wide hierarchic triple star system ADS 10288 (GL 649.1 = WDS 16579+4722), based on a 15-year series of photographic observations with the 26″ Pulkovo refractor, supplemented with data from the WDS catalog, HIPPARCOS parallaxes, and radial velocities of the…

Apex diagrams for the stellar population of the solar neighborhood

Vereshchagin, S. V.; Reva, V. G.; Chupina, N. V.

We have studied some kinematic features of the coronas of near-solar stellar streams, based on Hipparcos observations. Apex diagrams for kinematic streams, open clusters, and field stars are plotted. In our analysis, we used the apex-diagram (AD) method we developed earlier. We find that the Eggen streams and Arcturus stream have similar propertie…