A photometric study of an ew-Type binary system: GV Leo

• Main Authors: Wichean Kriwattanawong, Panomporn Poojon
• Format: Journal
• Published: 2018
• Subjects: Earth and Planetary Sciences; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84887694261&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/52484
• Institution: Chiang Mai University

A photometric study of a contact binary system, GV Leo is presented. New observationswere done using the BVR filter bands.We find that a revised orbital period is 0.26673171d and the orbital period of this system is decreasing at a rate of dP/dt = -4.95 × 10-7 d yr-1. The photometric solutions are fairly well fitted at a mass ratio of q = 0.1879, with a fillout factor of f = 17.74%. The results indicate that there exists mass transfer from the moremassive component to the less massive one at a rate of relative mass exchange, ṁ1/m = -1.09×10-7 yr-1. It is possible that this weakcontact system, that shows a decreasing orbital period, may undergo contraction of the inner and outer critical Roche lobes and evolve into a deep-contact binary.