Flux (F_λ) vs. wavelength (Å) G160M spectrum of the Si II λλ1260, 1265 region revealing the strong photospheric components of Si II and the broad, deep absorption due to a blend of P II lines. Superimposed on the HST spectrum are four synthetic spectra corresponding to four values of the phosphorus abundance and T_eff = 22,000 K, log g = 8.43, V_rot = 400 km s⁻¹, with all other chemical abundances as listed in Table 3. The dotted fit is for P abundance of 0.3 times solar, the dash‐dotted fit for 10 times solar, the dashed fit for 100 times solar, and the solid fit for 900 times solar.