wabs, zwabs: photoelectric absorption, Wisconsin cross-sections
A photo-electric absorption using Wisconsin (Morrison and McCammon; ApJ 270, 119) cross-sections.
where s(E) is the photo-electric cross-section (NOT including Thomson scattering). Note that this model uses the Anders & Ebihara relative abundances (1982, Geochimica et Cosmochimica Acta 46, 2363) regardless of the abund command.
par1= nH |
equivalent hydrogen column (in units of 1022 atoms cm–2) |
The zwabs variant allows the user to specify a (fixed) redshift parameter, and uses the corresponding formula
par1= nH |
equivalent hydrogen column (in units of 1022 atoms cm–2) |
par2= z |
redshift |