Physical and geometrical parameters of CVBS X:the spectroscopic binary Gliese 762.1

作     者：Suhail G.Masda Mashhoor A.Al-Wardat Ralph Neuh user Hamid M.Al-Naimiy 

作者机构：Astrophysikalisches Institut und Universitats-Sternwarte JenaFSU Jena07745 JenaGermany Physics DepartmentFaculty of ScienceAl al-Bayt UniversityPO Box:130040Mafraq25113 Jordan Applied Physics and Space Science DepartmentUniversity of Sharjah PO Box:27272 SharjahUnited Arab Emirates 

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

年 卷 期：2016年第16卷第7期

页      面：105-112页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 08[工学] 0708[理学-地球物理学] 080203[工学-机械设计及理论] 070401[理学-天体物理] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 080201[工学-机械制造及其自动化] 

基　　金：Ministry of Higher Education and Scientific Research in Yemen 

主　　题：stars fundamental parameters binaries spectroscopic binary system atmospheres modeling Gliese 762 1 

摘      要：We present the physical and geometrical parameters of the individual components of the close visual double-lined spectroscopic binary system Gliese 762.1, which were estimated using Al-Wardat＇s complex method for analyzing close visual binary systems. The estimated parameters of the individual components of the system are as follows： radius RA= 0.845±0.09R⊙, RB= 0.795±0.10R⊙, effective temperature Teff^A = 5300luminosity±50 K, Teff^B= 5150 L±50 K, surface gravity log gA= 4.52±0.10, log gB=4.54±0.15 and A= 0.51 with a semi-major axis of 0.0865±0.08L⊙, LB= 0.40±0.07L⊙. New orbital elements are presented±0.010 arcsec using the Hippracos parallax π = 58.96 ndividual masses of the system are determined as M = 1.±0.65 mas, and an accurate total mass and i72±0.60 M⊙,MA= 0.89±0.08 M⊙and MB= 0.83 K0 V and±0.07 M⊙. Finally, the spectral types and luminosity classes of both components are assigned as K1.5V for the primary and secondary components respectively,and their positions on the H-R diagram and evolutionary tracks are given.