Blue line: X-shooter data of HD 152235 from 1075 to 1105 nm showing an emission line from the star at 1083 nm (He I) and absorption at 1094 nm (H I). Red line: Stellar model in vacuum wavelength obtained using CMFGEN of a BOIa star of solar metalicity, T_eff = 21 800 K, log(g) = 2.55, and slightly enhanced He/H = 0.135 by number, offset in the ordinate for clarity. The purple line shows the model spectrum Gaussian smoothed to a FWHM of 0.91 nm (~250 km s⁻¹) to fit the absorption line data.