The First Detailed Analysis on the Astrophysical Properties of The Eccentric Binary V990 Her
Abstract
We present accurate physical parameters of the eccentric binary system V990 Her which has an orbital period of P=8.193315±0.000003 days using its photometric and spectroscopic data. The physical parameters of the components were derived as Teff1=8000±200 K, Teff2=7570±200 K, M1=2.01±0.07M⊙, M2=1.83±0.03M⊙, R1=2.22±0.02R⊙, R2=2.12±0.01R⊙, log(L1/L⊙)=1.25±0.04, log(L2/L⊙)=1.12±0.05. Our findings revealed that both components are slightly evolved from the zero-age main sequence with an age of 6.3×108 years. We estimated an apsidal motion with a period of U=14683±2936 years in the system and the internal structure constants of the components were derived for the first time.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica
- Pub Date:
- October 2021
- DOI:
- 10.22201/ia.01851101p.2021.57.02.09
- Bibcode:
- 2021RMxAA..57..363K
- Keywords:
-
- binaries: eclipsing;
- stars: individual: V990 Her;
- techniques: photometric;
- techniques: spectroscopic