The Impact of an AGN on PAH Emission in Galaxies: the Case of Ring Galaxy NGC 4138

G. P. Donnelly, J. D. T. Smith, B. T. Draine +5

We present a focused study of radially-resolved varying PAH emission in the low-luminosity AGN-host NGC 4138 using deep Spitzer/IRS spectral maps. Using new model PAH spectra, we i…