NED object is NGC 4579; Reference is 1987A&AS...70..517H Figure 1. - Contour maps of nuclei that show a more complex structure of their radio continuum emission. The parameters relevant to these maps are given in table II. The optical positions are indicated by a cross. NGC 4579 Contours plotted (mJy per beam) -0.4, 0.4, 0.8, 1.6, 3.2, 12.8 HPBW (arcsec) 1.2 r.m.s. noise (mJy per beam) 0.19.