"X-Raying" a Be star disk: fundamental parameters of the eclipsing binary Be star V658 Car

Spectroscopic observations of V658 Car were obtained from LCO (NRES) and SOAR (TripleSpec). Polarimetric observations were obtained from OPD (de Amorim+ 2025). SOAR: For each observation, we provide both the normalized and absolute spectra. NRES: We provide the calibrated normalized spectra for each observation, as well as a pickle file containing the interpolated (order-stitched) spectra and a Python script to read it. OPD: We provide the reduced photometric polarimetry data for the B, V, R, and I bands.