The First Detailed Analysis on the Astrophysical Properties of The Eccentric Binary V990 Her
Revista Mexicana De Astronomia Y Astrofisica, cilt.57, ss.363-379, 2021 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 57
- Basım Tarihi: 2021
- Doi Numarası: 10.22201/ia.01851101p.2021.57.02.09
- Dergi Adı: Revista Mexicana De Astronomia Y Astrofisica
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.363-379
- Akdeniz Üniversitesi Adresli: Evet
Özet
We present accurate physical parameters of the eccentric binary systemV990 Her which has an orbital period ofP= 8.193315±0.000003days using its pho-tometric and spectroscopic data. The physical parameters of the components werederived asTeff1=8000±200K,Teff2=7570±200K,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 slightlyevolved from the zero-age main sequence with an age of6.3×108years. We esti-mated an apsidal motion with a period ofU= 14683±2936years in the systemand the internal structure constants of the components were derived for the firsttime.