First BVR light curves and preliminary results of a recently discovered W UMa-type binary: V1848 Ori

• Main Authors: Kriwattanawong W., Poojon P.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-84886834562&partnerID=40&md5=f20a91000ef09cb9edd809bda9f873ba; http://cmuir.cmu.ac.th/handle/6653943832/7182
• Institution: Chiang Mai University

First complete photometric light curves of a recently discovered contact binary, V1848 Ori, are presented. BVR imaging data were used to derive photometric solutions, using Wilson-Devinney code. We discovered that this system is a weak-contact binary, with a fillout factor of f = 13.14%(±1.44%). Preliminary results showed that V1848 Ori is an A-type W UMa system, with a mass ratio of q = 0.7615. The more massive component was found about 400 K hotter than the other one. This system has varied from W-type to A-type during the last decade. According to the preliminary physical parameters, the weak-contact configuration of this system, with the mass ratio close to unity, and no sign of long-term orbital period change yet, is unlikely to be broken. The contact configuration is expected to be maintained and become deeper or not, depending on effect of the AML mechanism. © 2013 Elsevier B.V. All rights reserved.