The Investigation of the Dynamical Evolution of Extrasolar Three-planetary System GJ 3138

作     者：Alexander Perminov Eduard Kuznetsov Alexander Perminov;Eduard Kuznetsov

作者机构：Ural Federal University51 Lenin AvenueYekaterinburgRussia 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第1期

页      面：68-84页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Russian Foundation for Basic Research (grant 18-32-00283 mol_a)(A. Perminov) Ministry of Science and Higher Education of the Russian Federation under the grant 075-15-2020-780 (No.13.1902.21.0039)(E. Kuznetsov) 

主　　题：Planetary Systems planets and satellites:dynamical evolution and stability planetstar interactions celestial mechanics 

摘      要：This article is devoted to studying the dynamical evolution and orbital stability of compact extrasolar threeplanetary system GJ 3138. In this system, all semimajor axes are less than 0.7 au. The modeling of planetary motion is performed using the averaged semi-analytical motion theory of the second order in planetary masses,which the authors construct. Unknown and known with errors orbital elements vary in allowable limits to obtain a set of initial conditions. Each of these initial conditions is applied for the modeling of planetary motion. The assumption about the stability of observed planetary systems allows to eliminate the initial conditions leading to excessive growth of the orbital eccentricities and inclinations and to identify those under which these orbital elements conserve moderate values over the whole modeling interval. Thus, it becomes possible to limit the range of possible values of unknown orbital elements and determine their most probable values in terms of stability.