Beyond the bulge-halo conspiracy? Density profiles of Early-type galaxies from extended-source strong lensing

Amy Etherington, James W. Nightingale, Richard Massey +9

Observations suggest that the dark matter and stars in early-type galaxies `conspire' to produce a surprisingly simple distribution of total mass, $\rho (r)\propto {\rho }^{-\gamma }$, with $γ\appr…