Light curve solutions of the eclipsing Kepler binaries KIC 5080652, KIC 5285607, KIC 9236858 and KIC 11975363 |
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| Institution: | 1. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Astronomy Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421, Helwan, Cairo, Egypt;2. Physics Department, Faculty of Science, Northern Border University, Rafha Branch, Saudi Arabia;3. Astronomy Department, Faculty of Science, King Abdul Aziz University, Jeddah, Saudi Arabia;4. Institute of Astronomy Russian Academy of Sciences (INASAN), 48 Pyatnitskaya st., Moscow, Russia;5. Department of Physics and Institute of Astronomy, National Tsing Hua University, Hsin-Chu, Taiwan;6. Aryabhatta Research Institute of observational sciencES (ARIES), Manora Peak Nainital 263 002, India;1. INAF Astronomical Observatory of Padova, via dell’Osservatorio 8, 36012 Asiago (VI), Italy;2. ANS Collaboration, c/o Astronomical Observatory, 36012 Asiago (VI), Italy;1. Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China;2. Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China;3. University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China;1. Millennium Institute of Astrophysics, Chile;2. Departamento de Ciencias Físicas, Universidad Andrés Bello, Fernándes Concha 700, 759-1598 Las Condes, Santiago, Chile;3. Observatorio Astronómico de Córdoba, Universidad Nacional de Córdoba, Laprida 854, X5000BGR, Córdoba, Argentina;4. Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile;5. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, CABA, C1425FQB, Argentina;6. Unidad de Astronomía, Facultad Cs. Básicas, Universidad de Antofagasta, Avda. U. de Antofagasta 02800, Antofagasta, Chile;7. Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Playa Ancha, Casilla 5030, Valparaíso, Chile;8. Universidade Federal do Rio Grande do Sul, Departamento de Astronomia, CP 15051, RS, 91501-970, Porto Alegre, Brazil |
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| Abstract: | We carried out light curve solutions of four detached binaries with circular orbits, observed by Kepler. As a result their orbital inclinations, temperatures and relative stellar radii were determined. We estimated also their global parameters on the base of the obtained solutions and empirical relation “temperature, luminosity” for MS stars. The out-of-eclipse light curves of KIC 5080652, KIC 9236858 and KIC 11975363 reveal a trend the bigger amplitudes to correspond to single-waved shape while the two-waved shape to be inherent to the smaller amplitudes. This type of variability was attributed to gradually transition between state with two almost opposite cool spots and state with bigger in size polar spot. We detected also several microflares of KIC 11975363 with amplitudes of 0.002–0.003 mag. |
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