Results of UBV Photoelectric Observations of eclipsing binary RY Sct
Results of the three-colour photoelectric observation of the close binary system RY Sct, obtained at the Abastumani Astrophysical observatory, are presented.
astro-ph.SR↗
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K. B. Chargeishvili
Publications and source records attributed to K. B. Chargeishvili.
Results of UBV Photoelectric Observations of the Early-Type Eclipsing Binary System XZ Cep
Results of the three-colour photoelectric observation of the close binary system XZ Cep, obtained at the Abastumani Astrophysical observatory, are presented.
astro-ph.SR↗
Three-color Photoelectric Observations of UU Cas
Results of three-color photoelectric UBV observations of UU Cas performed at Abastumani Astrophysical Observatory in 1972-1984 are presented.
astro-ph.SR↗
Investigation of Non-Stable Processes in Close Binary Ry Scuti
We present results of reanalysis of old electrophotometric data of early type close binary system RY Scuti obtained at the Abastumani Astrophysical Observatory, Georgia, during 1972-1990 years and at the Maidanak Observatory, Uzbekistan, during 1979-1991 years. It is revealed non-stable processes in RY Sct from period to period, from month to month and from year to year. This variation consists from the hundredths up to the tenths of a magnitude. Furthermore, periodical changes in the system's light are displayed near the first maximum on timescales of a few years. That is of great interest with regard to some similar variations seen in luminous blue variable (LBV) stars. This also could be closely related to the question of why RY Sct ejected its nebula.
astro-ph.SR↗