A New Challenge: Bar Formation and Secular Evolution in Lenticular   Galaxies
  To further enhance our understanding on the formation and evolution of bars in lenticular (S0) galaxies, we are undertaking a detailed photometric and spectroscopic study on a sample of 22 objects. Here we report the results of a 2D structural analysis on two barred face-on S0's, which indicate that presently these galaxies do not possess disks. We discuss two possibilities to explain these surprising results, namely strong secular evolution and bar formation without disks. 
Dimitri A. Gadotti (1) and Ronaldo E. de Souza (1) ((1) Astronomy   Department - University of Sao Paulo - Brazil)