Unification models of AGNs
Seyfert unified model? dusty/molecular torus (few pc) blocking nucleus and BLR
- ISOPHOT-S spectra of CfA Seyferts supports standard model (isotropic PAH emission, Seyfert 1 are brighter than Sey. 2)
However:
- theoretical evidence that dust distribution extend over few hundred pc (Fadda et al. 1998)
- observational evidences that MIR emission is extended (NGC 1068, Cameron et al 1993)
- stellar origin of UV continuum in Seyfert 2 galaxies (Colina et al 1997)
To be addressed by MID IR
- subarcsecond imaging of nearby AGNs, temperature mapping.