A tale on two close binaries in Pegasus
Baltic Astronomy, cilt.23, sa.2, ss.123-135, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 23 Sayı: 2
- Basım Tarihi: 2014
- Doi Numarası: 10.1515/astro-2017-0177
- Dergi Adı: Baltic Astronomy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.123-135
- Anahtar Kelimeler: Binaries, Eclipsing - stars, Fundamental parameters - stars, Individual (BB Peg, V407 Peg), Stars
- Boğaziçi Üniversitesi Adresli: Hayır
Özet
We present the simultaneous light and radial velocity curve analysis of two contact binaries in Pegasus using the Wilson-Devinney code. The following absolute astrophysical parameters are determined: masses, radii and effective temperatures. BB Peg is a W-subtype W UMa-type binary, components of which are main sequence stars with 0.50M⊙ and 1.40M⊙. The radii of its components are R1 = 0.81R⊙ and R2 = 1.28R⊙. V407 Peg is an A-subtype contact binary composed of two subgiant components with masses 1.70 M⊙ and 0.43M⊙, and radii R1 = 2.17R⊙ and R2 = 1.25R⊙. Comparisons with the theoretical models for solar composition by Girardi et al. (2000) confirms our classification and supports the results.