atable:  tabulated additive model

An additive table model component. The filename to be used must be given immediately after atable in the  model command. For example

 

model  atable{mymod.mod}

 

uses mymod.mod as the input for the model. For specifications of the table  model file, see the OGIP memo 92-009 on the FITS file format for table model  files (available on the WWW or by anonymous ftp from  ftp://legacy.gsfc.nasa.gov/caldb/docs/memos . Example additive table model files are mekal.mod and raysmith.mod in   $HEADAS/../spectral/modelIonData and testpo.mod  in   $HEADAS/../spectral/session.

Any number of tabulated model components (additive, multiplicative or exponential) may be used simultaneously.