Skip to main content

Come analyze HEASARC, IRSA, and MAST data in the cloud! The Fornax Initiative is now welcoming all interested beta users.

Xspec Home Page

next up previous contents
Next: mtable: multiplicative tabular model Up: Multiplicative Model Components Previous: lorabs, zlorabs: lorentzian absorption   Contents


lyman: Voigt absorption profiles for H I or He II Lyman series

This model calculates the Voigt absorption profiles for the H I and He II Lyman series.

par1 n: H I or He II column density ($10^{22}$ atoms/cm$^2$)
par2 b: b value (km/s)
par3 z: Redshift
par4 ZA: Atomic number of species being calculated.