Radio emission from star-forming galaxies
UGC 09057 NGC 5257/5258 NGC 7252 z=0.0054 z=0.0223 z=0.0161 Estimated star formation rate: 1.8 Msun/yr 120 Msun/yr 32 Msun/yr (Radio emission is dominated by synchrotron radiation from electrons accelerated by supernova remnants, most are detected as IRAS sources)