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High-Resolution Spectroscopy of the B[e] Star MWC 645
Miroshnichenko, A. S.; Manset, N.; Zharikov, S. V. +4 more
Optical high-resolution spectroscopic observations of the emission-line star MWC645 are presented. The spectrum exhibits strong variable double-peaked Balmer emission lines as well as low-excitation emission lines of FeII, [FeII], and [OI] which are signatures of the B[e] phenomenon, while lines of helium have not been found. In addition to the em…
Early Kyiv Observations of Asteroids: Analysis and New Reduction with Tycho-2 and Gaia Catalogs
Shatokhina, S. V.; Kazantseva, L. V.
For more than 50 years, the continuous photographic observations of asteroids have been carried outwith telescopes of the Astronomical Observatory of the Taras Shevchenko National University of Kyiv and the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. About 3,000 photographic plates were obtained, some of which wer…
Re-Reduction of the Old Photographic Observations of Interamnia (704) Based on Gaia DR2 Reference Catalogue
Protsyuk, Yu. I.; Maigurova, N. V.
A new astrometric reduction of old photographic astroplates benefiting from integration of modern technologies such as the high precision digitizing machines and the high precision Gaia DR2 catalogue could be useful to study the orbital motion of Solar system minor bodies. Based on the newly released Gaia DR2 star catalogue, the scans of the photo…
Software for Search and Measuring of WDS Catalog Double and Multiple Stars from Database of Results of CCD Observation
Protsyuk, Yu. I.; Maigurova, N. V.
Double and multiple star systems are the source of unique information for determining the parameters of star formation models and for testing stellar models evolution. Therefore observations and measuring of their mutual configuration parameters is still important. Observations of double and multiple star systems at the Research Institute "Mykolai…
The Emission-Line Dusty Object IRAS 07080+0605, A Less-Evolved Example of the Red Rectangle
Miroshnichenko, A. S.; Manset, N.; Zharikov, S. V. +11 more
The all-sky survey conducted by the InfraRed Astronomical Satellite (IRAS) in the 1980's discovered many objects with infrared excesses whose nature has not been explored until recently. IRAS07080+0605 is one of those identified in the visual spectral range with an early-type star, which shows the B[e] phenomenon. The object is puzzling, because i…
The Re-Processing Results of Photographic Observations of Asteroids with GAIA Catalog at the Mao Nas of Ukraine
Andruk, V. M.; Shatokhina, S. V.; Kazantseva, L. V.
In total, about 4,500 asteroid po-sitions were determined from photographic observations conducted at the MAO NAS of Ukraine in 1952-1996. These are the early positions of the selected minor planets, mostly bright, the observations of which were initiated by the founders of the ORBITA observational program and were made in 1952-1986. The second la…
Spectroscopic Investigations of Galactic Clusters with Associated Cepheid Variables. III. Collinder 394 and BB SGR
Kniazev, A. Yu.; Miroshnichenko, A. S.; Mishenina, T. V. +4 more
We present the results of a spectroscopic and photometric investigation of 20 objects from the open cluster Collinder 394, which contains the Cepheid BB Sgr. Besides the Cepheid, we studied tree K-giants, four B-giants, and twelve B-A-F main sequence stars. Radial velocities (RV), v sin i, Teff, log g, were determined using spectroscopi…
New Astrometric Reduction of the Supercosmos Plate Archive: First Results
Andruk, V. M.; Akhmetov, V. S.; Protsyuk, Yu. I. +2 more
The arrivals of the new more accuracy reference catalogs and development of new methods and approaches for reduction astrometric data give the new life for photographic plates archives. Gaia DR2 is not only a giant step in the astrometric accuracy allowing to measure new objects it also provides plates archives observed in the past with modern acc…
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.…