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https://hdl.handle.net/11147/2085
Title: | Absolute properties of the binary system BB pegasi | Authors: | Kalomeni, Belinda Yakut, Kadri Keskin, Varol Değirmenci, Ömer Lütfi Ulaş, Burak Köse, Oğuzhan |
Keywords: | Binaries Stars BB pegasi |
Issue Date: | Aug-2007 | Publisher: | IOP Publishing | Source: | Kalomeni, B., Yakut, K., Keskin, V., Değirmenci, Ö. L., Ulaş, B., and Köse, O. (2007). Absolute properties of the binary system BB pegasi. Astronomical Journal, 134(2), 642-647. | Abstract: | We present ground-based photometry of the low-temperature contact binary BB Peg. We collected all the times of mid-eclipse available in the literature and combined them with those obtained in this study. Analyses of the data indicate a period increase of (3.0 ± 0.1) × 10-8 days yr -1. This period increase of BB Peg can be interpreted in terms of the mass transfer 2.4 × 10-8 M⊙ yr-1 from the less massive to the more massive component. The physical parameters have been determined as Mc = 1.42M⊙, Mh = 0.53 M⊙, Rc = 1.29 R⊙, Rh, = 0.83 R⊙, Lc = 1.86 L⊙, and L h = 0.94 L⊙ through simultaneous solutions of light and of the radial velocity curves. The orbital parameters of the third body, which orbits the contact system in an eccentric orbit, were obtained from the period variation analysis. The system is compared to the similar binaries in the Hertzsprung-Russell and mass-radius diagrams. | URI: | http://hdl.handle.net/11147/2085 https://doi.org/10.1086/519493 |
ISSN: | 0004-6256 0004-6256 1538-3881 |
Appears in Collections: | Physics / Fizik Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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