Search Publications

Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system

Gontcharov, G. A.

The Pulkovo Compilation of Radial Velocities (PCRV) has been made to study the stellar kinematics in the local spiral arm. The PCRV contains weighted mean absolute radial velocities for 35 495 Hipparcos stars of various spectral types and luminosity classes over the entire celestial sphere mainly within 500 pc of the Sun. The median accuracy of th…

Astrometric study of the triple star ADS 9173

Kiyaeva, O. V.

An approximate orbit of the wide visual binary star ADS 9173 A(Bb) with a period of ∼6000 yr has been determined for the first time by the method of apparent motion parameters. The orbit was computed using a short (1982 2004) arc of photographic observations obtained with the 26-inch Pulkovo Observatory refractor and the Hipparcos parallax. Agreem…

Kinematic control of the inertiality of the system of Tycho-2 and UCAC2 stellar proper motions

Bobylev, V. V.; Khovirtchev, M. Yu.

Based on the Ogorodnikov-Milne model, we analyze the proper motions of Tycho-2 and UCAC2 stars. We have established that the model component that describes the rotation of all stars under consideration around the Galactic y axis differs significantly from zero at various magnitudes. We interpret this rotation found using the most distant stars as …