(a) the observed distribution for spirals in the OSUBSGS (cover the Hubble types up to ), taken from Block et al. [54], compared with the simulation models by Bournaud and Combes [55]. The solid line shows the observed values from Block et al., the dotted line is the model with no gas accretion, and the dashed line shows the model that doubles the total galaxy mass in 1010 years. (b) the observed distributions for the S0s and early-type spirals in NIRS0S, taken from Buta et al. [56]. Notice that in Block et al. [54] in (a) has the same meaning as in Buta et al. [56] in (b).
