Dust attenuation assumptions and spatially resolved quenching in CANDELS

Determining how galaxies stop forming stars remains an open issue in our understanding of galaxy evolution. The mechanisms behind the cessation of star formation can be identified by studying the radial profiles of the star formation rate (SFR) for galaxies of different integrated masses, star formation properties, and at different redshifts. Estimating radial SFR profiles, however, depends sensitively on assumptions of the nature of dust attenuation within galaxies. We examine the effects of assuming different attenuation curves in spatially resolved spectral energy distribution fitting of massive galaxies at redshift about 1 in the CANDELS survey. Surprisingly, we find different results in the shape and normalization of the radial profiles when assuming different attenuation curves. In this talk, I present results and hints of a varying slope of the attenuation curve within galaxies, provided other parameters degenerate with dust are accounted for adequately