Search Publications

Determination of the Rotation Curve for Stars of the Gould Belt Using Bottlinger's Formulas

Bobylev, V. V.

Based on the Hipparcos catalog and the radial velocities of stars published to date, we perform a kinematic analysis of OB stars. Parameters of the general Galactic rotation were determined from distant OB stars. We used the residual velocities of stars corrected for the general Galactic rotation to study the proper rotation of nearby OB stars. Ge…

Astrometric Control of the Inertiality of the Hipparcos Catalog

Bobylev, V. V.

Based on the most complete list of the results of an individual comparison of the proper motions for stars of various programs common to the Hipparcos catalog, each of which is an independent realization of the inertial reference frame with regard to stellar proper motions, we redetermined the vector omega of residual rotation of the ICRS system r…

Stars of Extragalactic Origin in the Solar Neighborhood

Borkova, T. V.; Marsakov, V. A.

For 77 main-sequence F-G stars in the solar neighborhood with published iron, magnesium, and europium abundances determined from high-dispersion spectra and with the ages estimated from theoretical isochrones, we calculated the spatial velocities using Hipparcos data and the Galactic orbital elements. A comparison with the orbital elements of the …

Proper Motions of 59 766 Stars Absolutized Using Galaxies in 149 Sky Fields (PUL2)

Bobylev, V. V.; Shakht, N. A.; Bronnikova, N. M.

The PUL2 catalog has been photographically compiled in Pulkovo according to Deutch's plan. The catalog contains the mean coordinates of stars in the ICRS system at epoch J2000.0 and their original absolute proper motions. The photographic observations were performed with a normal astrograph. The first and second epochs of the photographic plates a…

Kinematic Control of the Inertiality of ICRS Catalogs

Bobylev, V. V.

We perform a kinematic analysis of the HIPPARCOS and TRC proper motions of stars by using a linear Ogorodnikov-Milne model. All of the distant (r > 0.2 kpc) stars of the HIPPARCOS catalog have been found to rotate around the Galactic y axis with an angular velocity of M_{13}^- = -0.36 +/- 0.09 mas/yr. One of the causes of this rotation may be a…

Occultations of Stars Brighter Than 15 mag by the Largest Trans-Neptunian Objects in 2004-2014

Denissenko, D. V.

We computed the occultations of stars brighter than 15 mag by the largest trans-Neptunian objects (TNOs) for the next ten years. In our search, we used the following catalogs: Hipparcos; Tycho2 with the coordinates of 2838666 stars taken from UCAC2 (Herald 2003); and UCAC2 (Zacharias et al. 2003) with 16356096 stars between 12.00 mag and 14.99 mag…