Krushevskaya V. The modeling of observable optical effects in star planetary systems

The regularities of spatial distribution of stars with planets were studied, and some fundamental characteristics of extrasolar planets and their parent stars were calculated and analysed in this work. The methods applied for investigation of Solar System planets were considered, and their availability for observations of planets around other stars was shown. The reality of ground-based study of extrasolar planets by photometrical method was shown. The possibility of registration both total decrease of "star + planet" system brightness and relative changes of celestial bodies brightness with amplitude of a few thousandths of per cent of main radiation flow caused by extrasolar planet orbital motion was pointed out. The method of use of extrasolar planet orbital phase curve for improvement its mass was worked out. The results of our calculations have shown that planet orbital inclination angle to the picture plane can be estimated thanks to features of phase curve inclination. The improvement of value of this angle will allow to find more precise value of planet mass that then will give more precise values of many others parameters of extrasolar planets. This method was tasted on the planetary system near HD209458 star. The necessity of obligatory calculation of scattered light by planet atmospheres at analysis of planet spectra in visible and near-infrared range was pointed out in this work.