ISO's view of SS433 Jet Interactions with the Interstellar Medium

SS433 is a jet emitting X-ray binary surrounded by the W50 radio nebula. The SS433/W50 system is an excellent laboratory for studying relativistic jet interaction with the surrounding interstellar medium. In this context, part of the W50 nebula has been mapped with ISOCAM at 15 micron. I will show the results particularly on the W50 west lobe, and on 2 emitting zones detected with IRAS who have also been observed in millimetre wavelength (CO(1-0) transition), and for one of them by spectroscopy with ISOLWS and ISOSWS between 2 and 200 micron.