The determination of white dwarf parameters in dwarf novae by optical spectral modeling

作     者：Anastasiya Andreevna Dudnik Arina Alekseevna Mitrofanova Vladislav Vladimirovich Shimansky Nikolay Vladimirovich Borisov Nail Abdullovich Sakhibullin Anastasiya Andreevna Dudnik;Arina Alekseevna Mitrofanova;Vladislav Vladimirovich Shimansky;Nikolay Vladimirovich Borisov;Nail Abdullovich Sakhibullin

作者机构：Kazan(Volga Region)Federal UniversityKazanRepublic of TatarstanRussia Special Astrophysical ObservatoryRussian Academy of ScienceNizhnii ArkhysKarachai-Cherkessian RepublicRussia 

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7期

页      面：37-40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 Ministry of Science and Higher Education of the Russian Federation financial support from the RFBR and the Government of the RT in the framework of scientific projects 18–42–160003 funded by the subsidy 671–2020–0052 allocated to KFU for assignment in scientific activities 

主　　题：techniques:spectroscopic stars:variables:dwarf novae stars:individual:TY Psc stars:individual:FL Psc stars:individual:V455 And 

摘      要：This paper presents the results of a model analysis of optical spectra and determination of the parameters of three individual SU UMa and WZ Sge type dwarf *** moderate resolution spectra of TY Psc,FL Psc and V455 And were obtained at the 6-m BTA of the SAO RAS in the low state of these systems with the determination of white dwarf *** theoretical spectra were calculated using the grid models of hydrogen dwarf atmospheres of white dwarfs by varying the parameters(T_(eff) and log g) to reach the best agreement with the observed *** highlight different effects of the parameters on the shape and intensity of the HI ***,it is possible to unambiguously determine T_(eff) and log g from the analysis of *** fundamental parameters of white dwarfs(M and R) were found by comparing the parameters of atmospheres with theoretical models of the internal *** obtained parameters of the primaries of TY Psc,FL Psc and V455 And are consistent with the average values for SU UMa and WZ Sge *** a result,we demonstrate the efficiency of the method for determining the parameters of such systems based on the analysis of a limited set of observed optical spectra.