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Photometric study of the short-period contact binary CW Canis Minoris

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, , Citation P Panpiboon et al 2019 J. Phys.: Conf. Ser. 1380 012084 DOI 10.1088/1742-6596/1380/1/012084

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patapong.pa@rmu.ac.th

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1 Program of Applied Physics, Faculty of Science and Technology, Rajabhat Maha Sarakham University, Maha Sarakham, 44000, Thailand

2 Program of Physics, Faculty of Science and Technology, Rajabhat Maha Sarakham University, Maha Sarakham, 44000, Thailand

3 Program of Physics, Faculty of Education, Rajabhat Maha Sarakham University, Maha Sarakham, 44000, Thailand

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1742-6596/1380/1/012084

Abstract

We present the new BV light curves of the short-period contact binary CW Canis Minoris. The (O-C) diagram was fitted with times of minima for a new linear ephemeris which the period of the contact binary is found to be 0.313152 (±0.000053) days. The orbital period of the eclipsing binary is found to show a long-term increase at a rate of 3.34 (±0.50) × 10-7 days per year. The light curves were analyzed by the Wilson-Devinney code which has a mass ratio of 0.710 (±0.003) and a degree of contact about 0.013 (±0.989) %. The geometric structures of CW CMi are obtained with the components exactly filling its limited lobe.

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10.1088/1742-6596/1380/1/012084