EVOLUTIONARY MODEL OF SV CENTAURI DOUBLE STAR SYSTEM
SV CENTAURI ҚОС ЖҰЛДЫЗ ЖҮЙЕСІНІҢ ЭВОЛЮЦИЯЛЫҚ МОДЕЛІ

А. Demesinova, A.B. Manapbayeva, N.Sh. Alimgazinova, A.Zh. Naurzbayeva, M.T. Kyzgarina
2022 REPORTS  
The study of evolution of stellar objects is one of the main tasks in astrophysics. Investigating stars and (double and multiple) stellar systems of different masses and at different stages it is possible to obtain the necessary information for studying evolution of galaxies and the Universe as a whole. This study presents the results of studying SV Сentauri double star system. Based on the observational data on the characteristics of the stars, given in the scientific literature, one hundred
more » ... d fifty scenarios proposed in the works of the Van Rensbergen group (2008, 2011) were considered. Evolutionary diagrams were constructed and analyzed, which include dependences of mass and its loss, orbital period on age, luminosity of stars on effective temperatures, corresponding to conservative and liberal scenarios for the development of double systems. The liberal model of evolution with the initial masses of the components 15Mʘ and 6Mʘ was selected as the most probable scenario for SV Centauri double star system, while the age of the system was estimated as ~13.6 Myears. Under this assumption, the parameters of the SV Centauri components (masses, radii, luminosities, effective temperatures and orbital period) lie close to the theoretical curves on the corresponding evolutionary diagrams. The patterns observed in the orbital period changes and mass loss for SV Centauri, described in the scientific literature, also correspond to the chosen model in a given period of evolution.
doi:10.32014/2022.2518-1483.173 fatcat:7xrmsvphybapbi2mjqcqo6mqxy