An ionized absorber based on that of Done et al. (1992) developed by Magdziarz and Zdziarski. See also Zdziarski et al., 1995, ApJ, 363, L1. The opacities used by Done by Lang (1974) have been replaced by those of Morrison and McCammon (1983), and the iron abundance is variable now. The ion data are as used by Done, i.e., of Reilman and Manson (1982, ApJS), who employ the Hartree-Slater approximation (accurate to about 5%). Send questions or comments to aaz@camk.edu.pl.
par1 = power-law photon index.par2 = Hydrogen column in units of
cm
.
par3 = Absorber temperature in K.
par4 = Absorber ionization state (
), see Done et al. (1992).
par5 = Redshift.
par6 = Iron abundance relative to that of Morrison & MCammon (1983).