Tootfinder

BSN-III: The First Multiband Photometric Study on the Eight Total Eclipse Contact Binary Stars
Atila Poro, Kai Li, Raul Michel, Li-Heng Wang, Fahri Alicavus, Ghazal Alizadeh, Liliana Altamirano-D\'evora, Francisco Javier Tamayo, Hector Aceves
https://arxiv.org/abs/2507.20607

BSN-III: The First Multiband Photometric Study on the Eight Total Eclipse Contact Binary Stars
This study continues our in-depth investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight new systems, complementing our previous work. Multiband $BVR_cI_c$ photometric data were acquired through ground-based observations at an observatory in Mexico, from which new times of minima were determined. Our analysis of orbital period variations using the O-C method revealed that one system shows no long-term variation, four systems exhibit a secular decrease in their o…