Deep wide-field imaging down to the oldest main sequence turn-offs in the Sculptor dwarf spheroidal galaxyT. J. L. de Boer, E. Tolstoy, A. Saha, K. Olsen, M. J. Irwin, G. Battaglia, V. Hill, M. D. Shetrone, G. Fiorentino and A. ColeA&A, 528 (2011) A119DOI: https://doi.org/10.1051/0004-6361/201016398
