A simple gaussian line profile. If the width is then it is treated as a delta function. The zagauss variant computes a redshifted gaussian.
where:
par1 = | line wavelength in Angstrom |
par2 = | line width in Angstrom |
Norm = K | total photons/cm/s in the line |
For zagauss the corresponding formula is:
and the parameters are:
par1 = | line wavelength in Angstrom |
par2 = | line width in Angstrom |
par3 = z | redshift |
Norm = K | total photons/cm/s in the line |
The line is truncated at the point that the integrated flux under the line is within a critical value of the total flux. This critical value can be changed using xset LINECRITLEVEL. The default critical value is .