Baryonic compression on halo density profiles. Left: density profiles of compressed halos for the SPARC galaxies starting from the static NFW best-fit models. Right: density ratios of compressed to initial NFW halos. Both are color coded by effective surface brightness. High surface-brightness galaxies generally show larger density ratios, indicating more adiabatic contraction. Density ratios also increase towards the centers of galaxies where bulges can have a pronounced effect.