The Circumnuclear Environment of IRAS 20551-4250: A Case Study of AGN/Starburst Connection for JWST
Figure 7
Schematic view of the possible spatial distribution of the absorbing/emitting medium in IRAS 20551-4250. The X-ray absorbing gas (in light yellow) is located within the dust sublimation radius and represents the inner edge of the axisymmetric (toroidal) absorber. The dusty regions emitting the thermal radiation are in orange (for both AGN torus and SB clouds). A compact, dense screen of cold dusty gas (in blue) forms the outer layer of the AGN absorber and is responsible for both continuum reddening and deep absorption troughs. PAH features and H2 lines come from diffuse material spatially mixed with young stars (yellow/orange clouds). Due to the large spatial extent, only moderate internal obscuration is affecting the SB environment.
