NED object is NGC 2633; Reference is 1994MNRAS.268..203C

   Figure 1. Contour plots of galaxies in the sample that have a number of
 compact radio components. Peak flux = 2.0865E-03 JY per BEAM. Levs = 1.0000E-03
 * (-0.150, 0.150, 0.300, 0.400, 0.500, 0.600, 0.800, 1.000, 1.400, 2.000)