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Photometric parameters, distance and period-colour study of contact binary stars in the globular cluster ω Centauri

Sriram, K.; Vivekananda Rao, P.; Kiron, Y. Ravi

We present V passband photometric solutions of six contact binaries in the globular cluster ω Centauri using the Wilson-Devinney code. We found that four of the systems are H subtype W UMa binary systems and remaining two are W-subtype W UMa systems. Four of the systems show the O'Connell effect in their light curves and brightness at 0.75 phase i…