Stellar population gradients in Phoenix and Leo I

Martinez-Delgado, D; Gallart, C; Aparicio, A; Freedman, W; Whitelock, P; Cannon, R
1999
STELLAR CONTENT OF LOCAL GROUP GALAXIES
The study of gradients in the stellar populations of dwarf galaxies will give us necessary information to construct detailed models of their formation and evolution. We find clear traces of these gradients, in the sense of stars being older for larger galactocentric distances, in two interesting nearby dwarfs: Phoenix and Leo I.