Addition of different AGN contributions to the IR SED of RV4. AGN types simulated are type 1 (blue), intermediate type (green), and type 2 (red), as defined in Ciesla et al. (2015). The different lines correspond to different power of the AGN from 0% (no AGN) to 50% of the total IR luminosity. The gray downward triangles are the WISE 12 and 22 μm upper limits while the black downward triangles are the Herschel/PACS upper limits.