Orbital solution and evolutionary state for the eclipsing binary 1SWASP J080150.03+471433.8 |
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| Institution: | 1. Astronomy Dept., National Research Institute of Astronomy and Geophysics, Box: 138, 11421, Helwan, Cairo, Egypt;2. Kottamia Center of Scientific Excellence in Astronomy and Space Sciences (KCScE) STDF, ASRT, Cairo, Egypt;3. Physics Dept., College of Science, Northern Border University, 1320, Arar, Saudi Arabia;4. Astronomy Dept. and Meteorology, Faculty of Science, Al-Azhar University, Cairo, Egypt;1. Florida Institute of Technology, Physics and Space Sciences Department, Melbourne, Florida, 32901, USA;2. Florida Institute of Technology, Systems Engineering Department, Melbourne, Florida, 32901, USA;1. Physics Department, Faculty of Science and Arts, Northern Border University, Rafha Branch, Saudi Arabia;2. Physics Department, Faculty of Science, Northern Border University, Arar, Saudi Arabia;3. Astronomy Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421, Helwan, Cairo, Egypt;1. Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e.V. (BAV), Berlin, Germany;2. American Association of Variable Star Observers (AAVSO), Cambridge, USA;3. Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlá?ská 2, 611 37 Brno, Czech Republic;1. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;2. Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China;3. Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road,Beijing 100049, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;1. Laboratório Nacional de Astrofísica, Rua Estados Unidos, 154, Itajubá, CEP 37504-364 - MG, Brazil;2. Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão, 1226, São Paulo, CEP 05508-090, Brazil |
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| Abstract: | We present an orbital solution study for the newly discovered system 1SWASP J080150.03+471433.8 by means of new CCD observations in VRI bands. Our observations were carried out on 25 Feb. 2013 using the Kottamia optical telescope at NRIAG, Egypt. 12. New times of minima were estimated and the observed light curves were analysed using the Wilson–Devinney code. The accepted orbital solution reveals that the primary component of is more massive and hotter than the secondary one by about 30 K. The system is an over-contact one with fillout ratio ～29% and is located at a distance of about 195 Pc. The evolutionary status of the system is investigated by means of stellar models and empirical data. |
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