The above data are compiled together into a multi-waveband spectrum in Fig. 4. The spectral data plotted in this figure have not been stellar-subtracted or corrected for any reddening (i.e. this is the total galaxy+AGN spectrum as observed at Earth). The dotted line sketches the approximate intrinsic (i.e. dereddened/unabsorbed) spectrum of this source given a reddening of E(B-V)=0.61 (see Section 3).
There are several noteworthy features in this multiwaveband spectrum.
First, the observed spectral energy distribution [i.e. 
] peaks
in the mid-infrared ( 
). As discussed below,
this is probably due to thermal emission from warm/hot dust grains.
Secondly, whereas many classical Seyfert 1 galaxies display a strong
optical/UV continuum (the so-called Big Blue Bump), MCG-6-30-15 is
heavily reddened in the optical band and almost extinguished in the UV.
There is then a strong recovery at X-ray frequencies. The effect of the
warm absorber and iron K 
emission line are clearly seen in the
X-ray spectrum.
Figure 4: Multiband spectrum of MCG-6-30-15. These data have not been
corrected for reddening (either Galactic or intrinsic) and include the
stellar component. The dotted line shows the estimated intrinsic spectrum
of the source, after correction for reddening and absorption. A reddening
of E(B-V)=0.61 (see Section 3) has been assumed in the placement of this
line.