code: def _log10_Inorm_extern_atmx(self, Teff, logg, abun):
          
  
          log10_Inorm = libphoebe.wd_atmint(Teff, logg, abun, self.extern_wd_idx, self.wd_data["planck_table"], self.wd_data["atm_table"])
  
          return log10_Inorm
docs: Internal function to compute normal passband intensities using
          the external WD machinery that employs model atmospheres and
          ramps.
  
          @Teff: effective temperature in K
          @logg: surface gravity in cgs
          @abun: metallicity in dex, Solar=0.0
  
          Returns: log10(Inorm)