Here you can find plots and data of ionic abundance for various cosmically-abundant elements within a photoionised plasma, with ionisation parameter xi, assuming the Spectral Energy Distribution (SED) of NGC 5548. These data have been provided by Jelle Kaastra (SRON). In the data files, the first column is the log of the ionisation parameter, and subsequent columns are the logs of the ionic column density, for solar abundances (Anders & Grevesse 1989), and where hydrogen is 10.00 by definition (so an entry of 4.00 for any ion means that the column of that ion with respect to hydrogen is 10**(4-10) = 1E-6 cm**-2).
Updated: 13 September 2002
Produced by Alexander Blustin at MSSL.
