Role of the Rossiter-McLaughlin effect in the study of close binaries

作     者：Galina N.Dryomova Vladimir V.Dryomov 

作者机构：Russian Federal Nuclear Centre 

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

年 卷 期：2019年第19卷第3期

页      面：21-30页

核心收录：

学科分类：07[理学] 

主　　题：Rossiter-McLaughlin effect: eclipsing-variable stars apsidal effect individual binaries: AI Hya,NY Cep,EW Ori,DI Her,AS Cam 

摘      要：This paper is devoted to binary stars belonging to the class of eclipsing-variable *** and spectroscopic analysis of eclipses allows us to determine geometric parameters of the orbit and physical characteristics of stellar components as well as inclinations of stellar equators to the orbital plane. Estimations of inclinations can be obtained from measurement of the Rossiter-McLaughlin effect, which is discussed using examples of some eccentric binaries with an anomalous apsidal effect. Our task is to find the complete spectrum of solutions of the equation of apsidal motion, depending on the inclinations of the polar axes of the components to the orbital one for these systems, based on their individual spectroscopic and photometric observational data. The matrix of solutions allows us to select those pairs of polar inclinations that provide agreement with the observational apsidal period.