The first photometric analysis of the totally eclipsing contact binary V811 Cep

作     者：Xiang Gao Kai Li Xing Gao Yuan Liu 高翔;李凯;高兴;刘媛

作者机构：Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial EnvironmentInstitute of Space SciencesShandong UniversityWeihai 264209China Xinjiang Astronomical ObservatoryUrumqi 830011China Qilu Institute of TechnologyJinan 250200China 

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

年 卷 期：2021年第21卷第8期

页      面：99-105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 Joint Research Fund in Astronomy(No.U1931103)under cooperative agreement between the National Natural Science Foundation of China(NSFC)and Chinese Academy of Sciences(CAS) by NSFC(No.11703016) by Young Scholars Program of Shandong University,Weihai(No.20820171006) by the Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(No.OP201704) 

主　　题：binaries:close binaries:eclipsing stars:evolution stars:individual(V811 Cep) 

摘      要：The first photometric analysis of V811 Cep was carried *** first complete light curves of V,R and I bands are *** analysis was carried out by the Wilson-Devinney(W-D)program,and the results show that V811 Cep is a median-contact binary(f=33.9(±4.9)%)with a mass ratio of *** is a W-subtype contact binary,that is,the component with less mass is hotter than the component with more mass,and the light curves are asymmetric(O’Connell effect),which can be explained by the existence of a hot spot on the component with less *** orbital inclination is i=88.3°,indicating that it is a totally eclipsing binary,so the parameters obtained are *** the O-C analyzing,it is found that the orbital period decreases at the rate of P=-3.90(±0.06)×10^(-7)d yr^(-1),which indicates that the mass transfer occurs from the more massive component to the less massive one.