Testing multiband (G, G(BP), G(RP), B, V, and TESS) standard bolometric corrections by recovering luminosity and radii of 341 host stars

Main-sequence bolometric corrections (BC) and a standard BC-T-eff relation are produced for TESS wavelengths using published physical parameters and light ratios from SED models of 209 detached double-lined eclipsing binaries. This and previous five-band (Johnson B , V , Gaia G , G(BP), G(RP)) standard BC-T-eff relations are tested by recovering luminosity (L) of the most accurate 341 single host stars (281 MS, 40 subgiants, 19 giants, and one pre-main-sequence). Recovered L of photometry are compared to L from published R and T-eff. A very high correlation (R-2 = 0.9983) is achieved for this mixed sample. Error histograms of recovered and calculated L show peaks at similar to 2 and similar to 4 per cent, respectively. The recovered L and the published T-eff were then used in L = 4 pi R-2 sigma T-eff(4) to predict the standard R of the host stars. Comparison between the predicted and published R of all luminosity classes are found successful with a negligible offset associated with the giants and subgiants. The peak of the predicted R errors is found at 2 per cent, which is equivalent to the peak of the published R errors. Thus, a main-sequence BC-T-eff relation could be used in predicting both L and R of a single star at any luminosity class, but this does not mean BC-T-eff relations of all luminosity classes are the same because luminosity information could be more constrained by star's apparent magnitude xi than its BC since m(Bol) = xi + BC xi.