Abstract:Multi-band photometric observations of eleven totally eclipsing contact binaries were carried out. Applying the Wilson-Devinney program, photometric solutions were obtained. There are two W-subtype systems, which are CRTS J133031.1+161202 and CRTS J154254.0+324652, and the rest systems are A-subtype systems. CRTS J154254.0+324652 has the highest fill-out factor with 94.3%, and the lowest object is CRTS J155009.2+493639 with only 18.9%. The mass ratios of the eleven systems are all less than 0.1, which means th… Show more
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