Article ISI
Astrophysical Journal  (2011)

Color and Stellar Population Gradients in Passively Evolving Galaxies at z ~ 2 from HST/WFC3 Deep Imaging in the Hubble Ultra Deep Field

Guo, Yicheng; Giavalisco, Mauro; Cassata, Paolo; Ferguson, Henry C.; Dickinson, Mark; Renzini, Alvio; Koekemoer, Anton; Grogin, Norman A.; Papovich, Casey; Tundo, Elena; Fontana, Adriano; Lotz, Jennifer M.; Salimbeni, Sara