We provide three statistical model prescriptions for the bolometric corrections appropriate for B-type stars as a function of: 1) T_eff, 2) T_eff, log g, and 3) T_eff, log g, [M/H]. These statistical models have been calculated for 27 different filters, including those of the Gaia space mission, and were derived based on two different grids of bolometric corrections assuming LTE and LTE+NLTE, respectively. Previous such work has mainly been limited to a single photometric passband without taking into account NLTE effects on the bolometric corrections. Using these statistical models, we calculate the luminosities of 34 slowly pulsating B-type (SPB) stars with available spectroscopic parameters, to place them in the Hertzsprung-Russell diagram and compare their position to the theoretical SPB instability strip. We find that excluding NLTE effects has no significant impact on the derived luminosities for the temperature range 11500-21000 K. We conclude that spectroscopic parameters are needed in order to achieve meaningful luminosities of B-type stars. The three prescriptions for the bolometric corrections are valid for any galactic B-type star with effective temperatures and surface gravities in the ranges 10000-30000 K and 2.5-4.5 dex, respectively, covering regimes below the Eddington limit.

中文翻译：

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B 型恒星的热辐射校正和盖亚光度的方法：在星震样本中的应用

我们为适用于 B 型恒星的热辐射校正提供了三个统计模型规定，作为以下函数：1) T_eff, 2) T_eff, log g, 和 3) T_eff, log g, [M/H]。这些统计模型是针对 27 种不同滤波器（包括盖亚太空任务的滤波器）计算得出的，并且分别基于假设 LTE 和 LTE+NLTE 的两个不同的辐射热校正网格推导出来。以前的此类工作主要限于单个光度通带，而没有考虑 NLTE 对辐射热校正的影响。使用这些统计模型，我们使用可用的光谱参数计算了 34 颗缓慢脉动 B 型 (SPB) 恒星的光度，将它们放置在赫兹-罗素图中，并将它们的位置与理论 SPB 不稳定带进行比较。我们发现排除 NLTE 效应对 11500-21000 K 温度范围内的导出光度没有显着影响。我们得出结论，需要光谱参数才能获得有意义的 B 型恒星光度。辐射热校正的三个规定适用于有效温度和表面重力分别在 10000-30000 K 和 2.5-4.5 dex 范围内的任何银河 B 型恒星，覆盖范围低于爱丁顿极限。