Search academic texts

Information × Registration Number 0219U000498, 0113U008322 , R & D reports Title Determination of the physical parameters of the solar system's bodies, planetary systems and stars with disk structures popup.stage_title Head Vidmachenko A. P., Доктор фізико-математичних наук Registration Date 01-02-2019 Organization Main Astronomical Observatory popup.description2 According to the calendar plan, telescopes with sizes of 0.35-6 m were used to carried out observations of giant planets and their large satellites, binary stars and stars with exoplanets and circumstellar gas-dust structures. The temporal and seasonal changes in the physical properties and optical characteristics in the atmospheres of Jupiter and Saturn were investigated. From observations in 2014-2018 a new class of twilight fireballs was identified. Based on the results of the numerical solution of Maxwell's macroscopic equations using the superposition T-matrix method, the properties of electromagnetic radiation scattering by discrete media with a random distribution of constituent elements, typical of which are interstellar and interplanetary dust clouds in the solar system, dust atmospheres of comets, clouds in planetary atmospheres, are studied. , rings of planets, aerosol particles with various inclusions in the Earth's atmosphere. Evidence of the existence of additional bodies near eclipsing binary HS 2231 + 2441, V0873 Per and AR CrB was obtained from the analysis of the light curves and spectra using the methods of timing and transit, for AB And, ARСrB binary systems. From the processing of spectral data for transit systems HD189733, HD168746 and HD219828, chromospheric activity was recorded in their spectra. It was shown from Fotrie's calculations of the transport equation for polarized light in stellar atmospheres that information on the orientation of the planetary system in space, the physical and orbital parameters of the planets and the distribution of spots over the star disk can be obtained from polarimetric data. The distribution of energy in the spectrum of the G196-3B system with a brown dwarf and the narrow ring surrounding it, similar to the rings of Jupiter, and the energy distribution in the spectrum of the IRAS 22150 + 6109 system with a star of spectral type B3 and a circumstellar disk were studied. Comparison of the results of polarization observations of the earth's atmosphere with model calculations showed their better agreement with a particle size of rо = 0.16 ?m and the real part of the refractive index nr = 1.33-1.42. Product Description popup.authors Відьмаченко А.П Длугач Ж.М. Захожай О.В. Костогриз Н.М. Крушевська В.М. Кузнєцова Ю.Г. Мороженко О.В. Неводовський П.В. Овсак О.С. Розенбуш О.Е. Романюк Я.О. Стєклов О.Ф. Шавловський В.І. Шляхетська Я.О. popup.nrat_date 2020-04-02 Close