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The Catalogues Analysis of Stars Equatorial Coordinates and B-Magnitude of the FON Project
Andruk, V. M.; Akhmetov, V. S.; Protsyuk, Yu. I. +1 more
FON project was expected a catalogue of stellar positions and B magnitude of Northern sky from combination six astronomical observatories of the former USSR were equipped with the same wide-angle astrographs: Goloseevo (Ukraine), Zvenigorod, Zelenchuk (Russia), Abastumani (Georgia), Kitab (Uzbekistan) and HisorAO (Tajikistan). This paper has been …
Results of Processing of CCD Observations of Selected Open Clusters on Maidanak
Andruk, V. M.; Muminov, M. M.; Protsyuk, Yu. I. +4 more
Observations of 20 open clusters at the Maidanak Observatory were performed using the Zeiss-1000 telescope in the winter of 2018. As the light receiver, a CCD camera Apogee Alta U9000 (3K x 3K, FOV 19.5'x19.5') was used. All observations were performed using BVRI light filters. The exposure time, depending on the filter was from 60 to 150 seconds.…
Spectroscopic Investigations of Galactic Clusters with Associated Cepheid Variables. I. Polaris Cluster and α UMi.
Miroshnichenko, A. S.; Kovtyukh, V. V.; Danford, S. +4 more
We present the results of an analysis of the spectra of nine so called Polaris cluster A-FV stars obtained during 2016-2018. Radial velocities (RV) and GAIA DR 18 parallaxes-distances for these stars allow us to determine their membership in the cluster and to construct its 3D kinematic model. However Teff for four stars determined spec…
Spectroscopic Investigations of Galactic Clusters with Associated Cepheid Variables. II. NGC 5662 and V Cen
Kniazev, A. Yu.; Miroshnichenko, A. S.; Mishenina, T. V. +4 more
We present the results of a spectroscopic and photometric investigation of 15 objects from the open cluster NGC 5662, which contains the Cepheid V Cen. Besides the Cepheid, we studied one G-supergiant, two K-giants, four B-giants, and seven main sequence stars. Radial velocities (RV), v sin i, Teff, log g, and [Fe/H] were determined usi…
Kinematics of the Milky Way from Velocities of Young Red Clump Giants Using the PMa and Gaia DR2 Data
Fedorov, P. N.; Velichko, A. B.
Subsample of 19,600 young red clump giants with distances up to 1200 pc was selected from 7.2 mln Gaia DR2 data with radial velocities using the MG vs. G - KS diagram. Ages of these stars do not exceed 2 bln years. For this stellar subsample kinematic parameters of the Ogorodnikov-Milne model as well as the Kxy-ter…