Deep, low mass ratio overcontact binary systems. v. the lowest mass ratio binary V857 herculis

• Main Authors: S. B. Qian, L. Y. Zhu, B. Soonthornthum, J. Z. Yuan, Y. G. Yang, J. J. He
• Format: Journal
• Published: 2018
• Subjects: Earth and Planetary Sciences; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=25844440067&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/62175
• Institution: Chiang Mai University

Charge-coupled device (CCD) photometric light curves in the B, V, and R bands of the complete eclipsing binary star V857 Her are presented. It is shown that the light curves of the W UMa-type binary are symmetric and of A type according to Binnendijk's classification. Our four epochs of light m...