Speaker
Description
We present a comprehensive investigation of 10 detached eclipsing binaries composed of main-sequence stars, aiming to refine the precision of stellar parameter determination through multi-wavelength and multi-instrument data integration. This work combines spectroscopic data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), photometric observations from TESS, and broadband spectral energy distributions to derive key atmospheric parameters, radii, and masses of component stars.
The cross-validation across diverse datasets strengthens the robustness of our results, with consistent atmospheric parameters and stellar radii observed for most targets across the three methodologies. Potential sources of uncertainty in parameter estimation are analyzed by examining occasional discrepancies between effective temperatures from spectral analysis and those derived via light-curve orbital solutions. By leveraging high-precision, multi-method validated stellar parameters, we compare our results with PARSEC evolutionary models to assess the evolutionary states and infer ages of the sample binaries. While age consistency between components is observed for most systems, targets with eccentric orbits occasionally exhibit age discrepancies, prompting further exploration of underlying physical mechanisms. This study demonstrates the value of integrating complementary observational datasets in constraining stellar properties, offering insights into the reliability of multi-method parameter determination and its implications for understanding binary star evolution.
| Affiliation of the submitter | National Astronomical Observatories, Chinese Academy of Sciences, China |
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| Attendance | in-person |
