TESS Photometry and LAMOST Spectroscopy of 10 Detached Eclipsing Binaries

Abstract This study presents a thorough analysis of 10 detached eclipsing binaries that contain main-sequence stars. We have utilized a multifaceted approach, incorporating data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), TESS photometry, and broadband photometric spectral energy distributions, to determine the atmospheric parameters, radii, and masses of the component stars with high precision. The integration of these diverse data sets allows for the cross verification of results, thereby enhancing the accuracy and trustworthiness of our findings. Our investigation reveals consistent atmospheric parameters and stellar radii across the three methodologies, with exceptions like TIC 369605666 and 54759992, where the effective temperatures determined by the spectra differ from those calculated using the light-curve orbital solution. We explored possible reasons for the discrepancies in parameter estimation among the different methods for specific sources. Utilizing precise stellar parameters, determined and validated by multiple means, we compared them with PARSEC models to assess these samples’ evolutionary states and infer their ages. Regarding the determination of binary ages, the components of most sources are in agreement. However, for two targets with eccentric orbits, where the component stars’ ages diverge, we explored the potential causes.