ATLAS and SYNTHE under Linux

We have successfully ported under GNU Linux ATLAS 9, the widely used stellar atmosphere modeling code, as well as both the SYNTHE suite of programs, its ``companion'' for spectral synthesis, and WIDTH, used to derive chemical abundances from equivalent widths of spectral lines. The porting has been realized by using the Intel Fortran Compiler. Our aim was to port the codes with the minimum possible amount of modifications: full compatibility with the VMS version has been maintained, along with all the codes functionalities. Dramatic improvement in calculation speed with respect to the VMS version has been achieved. The full suite of codes is intended to be freely available to anyone.