Stephan's Quintet


images from Xu etal 1999

Optical
ISOCAM LW3

 
 
Starburst may be occuring at interface between galaxy and hot intragroup medium. 

Compare:

  • optical (greyscale), 
  • Xray (black contours), 
  • radio continuum (white contours)
radio: van der Hulst & Rots 1981
Xray: Pietsch etal 1997