Spectral energy distributions of quasars selected in the mid-infrared
  We present preliminary results on fitting of SEDs to 142 z>1 quasars selected in the mid-infrared. Our quasar selection finds objects ranging in extinction from highly obscured, type-2 quasars, through more lightly reddened type-1 quasars and normal type-1s. We find a weak tendency for the objects with the highest far-infrared emission to be obscured quasars, but no bulk systematic offset between the far-infrared properties of dusty and normal quasars as might be expected in the most naive evolutionary schemes. The hosts of the type-2 quasars have stellar masses comparable to those of radio galaxies at similar redshifts. Many of the type-1s, and possibly one of the type-2s require a very hot dust component in addition to the normal torus emission. 
Mark Lacy (1), Anna Sajina (2), Susan E. Ridgway (3), Danielle M.   Nielsen (4), Tanya Urrutia (5), Duncan Farrah (6), Elino...
astro-ph.CO