GEMS Imaging of Red Sequence Galaxies at z~0.7: Dusty or Old? by Bell, E, McIntosh, D, Barden, M, Wolf, C, Caldwell, J, Rix, H, Beckwith, S, Borch, A, Haeussler, B, Jahnke, K, Joggee, S, Meisenheimer, K, Peng, C, Sanchez, S, Somerville, R, Wisotzki, L