Thomas, J., Saglia, R.P., Bender, R., Thomas, D., Gebhardt, K., Magorrian, J., Corsini, E. M., Wegner, G. 2007, MNRAS, 382, 657 Toomre, A. in The structure and evolution of normal galaxies; Proceedings of the Advanced Study Institute, Cambridge, England, August 3-15, 1980. Cambridge and New York, Cambridge University Press, 1981, 111 Valenzuela, O., Rhee, G., Klypin, A., Governato, F., Stinson, G., Quinn, T., Wadsley, J. 2007, ApJ, 657, 773 Walcher, C.J., van der Marel, R.P., McLaughlin, D., Rix, H.-W., B¨ oker, T., H¨ aring, N., Ho, L.C., Sarzi, M., Shields, J.C. 2005, ApJ, 618, 237 Walcher, C.J., B¨ oker, T., Charlot, S., Ho, L.C., Rix, H.-W., Rossa, J., Shields, J.C., van der Marel, R.P. 2006, ApJ, 649, 692 Westfall, K.B., Bershady, M.A., Verheijen, M.A.W., Andersen, D.R., Swaters, R.A. in Island Universes: Structure and Evolution of Disk Galaxies, ed. R. de Jong, 2007. Springer, Dordrecht, 157 This preprint was prepared with the AAS L A T E X macros v5.2. 34 Toomre, A. 1964, ApJ, 139, 1217 van Albada, T.S., Bahcall, J.N., Begeman, K., Sancisi, R. 1985, ApJ, 295, 305 van den Bosch, F.C., Swaters, R.A. 2001, MNRAS, 325, 1017 van der Kruit, P.C., Searle, L. 1981, A&A, 95, 105 Weinberg, M.D., Katz, N. 2002, ApJ, 580, 627 Weinberg, M.D., Katz, N. 2007, MNRAS, 375, 460 Widrow, L.M., Perrett, K.M., Suyu, S.H. 2003, ApJ, 588, 311 Widrow, L.M., Pym, B., Dubinski, J. 2008, ApJ, 679, 1239 Wielen, R. 1974, Highlights of Astronomy, 3, 395 Wozniak, H., Champavert, N. 2006, MNRAS, 369, 853 Wozniak, H., Combes, F., Emsellem, E., Friedli, D. 2003, A&A, 409, 469 Yoshino, A., Ichikawa, T. 2008, PASJ, 60, 493