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Absolute Properties of Three Near-contact Binaries Undergoing Orbital Period Decrease at a Critical Evolutionary Stage

  • Authors: Bin Zhang, Xin-Jie Yan, Xu-Dong Zhang, Wen-Jun Xiao

Bin Zhang et al 2026 The Astrophysical Journal 1012 .

  • Provider: AAS Journals

Caption: Figure 2.

The O − C diagrams of three binary systems. The O − C values of these targets are calculated using the linear ephemeris listed in Equations (1)–(3). The red dashed lines indicate the quadratic fit, and open cycles stand for the observed data. The final fitting residuals are plotted in the bottom panel.

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