The Circumnuclear Environment of IRAS 20551-4250: A Case Study of AGN/Starburst Connection for JWST

Table 2

Extinction obtained by assuming a gas-to-dust ratio as in (1). Columns: (1) observational band used for the direct measurement with the relative reference. (2) and (3) L-band and 6 μm optical depth for the AGN continuum as obtained with our spectral decomposition model. (4) Optical depth of the aliphatic hydrocarbon feature once corrected for the SB dilution. (5) Gas column density measured from the X-ray spectrum. (6) Optical extinction predicted by Galactic relations (see text for details).

Extinction estimates
Band	𝜏𝐿	𝜏6	𝜏3.4	𝑁𝐻 cm^−2	Expected 𝐴𝑉 mag
3 μm [9]	8				220
6 μm [15]		1.2			110
3.4 μm [9]			1.5		450
2–10 keV [11]				8×10^23	420