A photo-electric absorption using Wisconsin (Morrison & McCammon 1983) cross-sections.
where is the photo-electric cross-section (NOT including Thomson
scattering). Note that this model uses the Anders & Ebihara relative
abundances (1982) regardless of the abund command.
par1=![]() |
equivalent hydrogen column (in units of ![]() ![]() |
The zwabs variant allows the user to specify a (fixed) redshift parameter, and uses the corresponding formula
par1=![]() |
equivalent hydrogen column (in units of ![]() ![]() |
par2=z | redshift |