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

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 f...

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Main Authors: Kriwattanawong W., Poojon P.
格式: Article
語言:English
出版: 2014
在線閱讀:http://www.scopus.com/inward/record.url?eid=2-s2.0-84887694261&partnerID=40&md5=fd5903c8a782a9170209de4bfbba4d65
http://cmuir.cmu.ac.th/handle/6653943832/7243
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機構: Chiang Mai University
語言: English
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總結: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.