TX Cnc is a member of the young open cluster NGC 2632. In the present paper, four CCD epochs of light minimum and a complete V light curve of TX Cnc are presented. A period investigation based on all available photoelectric or CCD data showed that it is found to be superimposed on a long-term increase (dP/dt=+3.97×10−8\,days/year), and a weak evidence suggests that it includes a small-amplitude period oscillation (A3=0.d0028; T3=26.6years). The light curves in the V band obtained in 2004 were analyzed with the 2003 version of the W-D code. It was shown that TX Cnc is an overcontact binary system with a degree of contact factor f=24.8. The absolute parameters of the system were calculated: M1=1.319±0.007M⊙, M2=0.600±0.01M⊙; R1=1.28±0.19R⊙, R2=0.91±0.13R⊙. TX Cnc may be on the TRO-controlled stage of the evolutionary scheme proposed by Qian (2001a, b; 2003a), and may contains an invisible tertiary component (m3≈0.097M⊙). If this is true, the tertiary component has played an important role in the formation and evolution of TX Cnc by removing angular momentum from the central system(Pribulla & Rucinski, 2006). In this way the contact binary configuration can be formed in the short life time of a young open cluster via AML.
@article{arxiv.1103.2020,
title = {CCD Photometric Study of the Contact Binary TX Cnc in the Young Open Cluster NGC 2632},
author = {Liu Liang and Qian Shengbang and BOONRUCKSAR Soonthornthum and Zhu Liying and He Jiajia and J. -Z. Yuan},
journal= {arXiv preprint arXiv:1103.2020},
year = {2015}
}