Benchmarking B-type line list

Compiled through careful merging and expansion of established literature sources, this list addresses the critical lack of comprehensive and homogeneous atomic data for hot star spectroscopy. The line list was rigorously validated using high-resolution HERMES and UCLES spectra of the benchmark star HR 1765 and FOCES spectra of the Algol-type binary system u Herculis.

By performing a homogeneous local thermodynamic equilibrium (LTE) abundance analysis with literature stellar parameters, we successfully reproduced the published results for the single star HR 1765 and obtained a revised abundance pattern for the mass-gaining primary component of u Her. A key aspect of our methodology is the subsequent application of NLTE calculations for several key species (He, Ne, and Si). The spurious helium enrichment suggested by LTE for HR 1765 was resolved, yielding an NLTE abundance consistent with the local cosmic standard, thereby mitigating the systematic biases inherent in the LTE approach and yielding abundances consistent with the cosmic standards.