Spectroscopic Analysis of the Eclipsing Binary ∝ CrB

Journal of astrophysics and astronomy

S. M. Saad¹  B. Korany2¹  M. A. Elkhamisy¹  M. I. Nouh1 2² 

[1] Astronomy Department, National Research Institute of Astronomy and Geophysics, 11721 Cairo, Egypt.$$;Physics Department, Faculty of Science, Northern Border University, 1321 Arar, Saudi Arabia.$$

关键词: Eclipsing binaries;    model atmosphere;    disentangling spectra;    stellar models.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The eclipsing binary ∝ CrB, is a well-known double-lined spectroscopic binary. The system is considered unique among main-sequence systems with respect to its small mass ratio and large magnitude difference between the components. Our aim in the present paper is to compute the orbital parameters and to model the atmospheric parameters of the system. Synthetic spectral analysis of both the individual and disentangled spectra has been performed and yielded effective temperatures 𝑇eff = 10000 ± 250 K, surface gravities log 𝑔 = 4 ± 0.25 and projected rotational velocities 𝑣 sin 𝑖 = 110 ± 5 km/sec for the primary component, and 𝑇eff = 6000 ± 250 K and log 𝑔 = 4.5 ± 0.25 for the secondary component. Evolutionary state of the system is investigated using stellar models.

【 授权许可】

Unknown