Morphology of the host galaxies. Comparison between early-type (Hubble type T ≤ 3, 10 objects) and late-type (T >  3, 6 objects) spiral galaxies. Upper panel: distribution of the Sérsic index of the primary bar component n_bar. Lower panel: distribution of the sSFR in the bar region s_bSFR_b. The median errors of n_bar and log(s_bSFR_b) are shown in the upper right corner. A typical error of Hubble type classifications for spiral galaxies is σ = 1.01 T-types (based on > 700 classification of 5 observers, Walcher et al. 2014). A k-sample Anderson-Darling test yields that the hypothesis that the early- and late-type galaxy samples are drawn from the same parent distribution cannot be rejected for either the Sérsic index nor s_bSFR_b with significance levels of 92% and 55%, respectively.