Stellar, gas and dark matter content of barred galaxies
  We select a sample of galaxies from the Sloan Digital Sky Survey Data Release
7 (SDSS-DR7) where galaxies are classified, through visual inspection, as
hosting strong bars, weak bars or as unbarred galaxies, and make use of HI mass
and kinematic information from the Arecibo Legacy Fast ALFA (ALFALFA) survey
catalog, to study the stellar, atomic gas and dark matter content of barred
disk galaxies. We find, in agreement with previous studies, that the bar
fraction increases with increasing stellar mass. A similar trend is found with
total baryonic mass, although the dependence is not as strong as with stellar
mass, this due to the contribution of gas. The bar fraction shows a decrease
with increasing gas mass fraction. This anticorrelation between the likelihood
of a galaxy hosting a bar with the gas richness of the galaxy results from the
inhibiting effect the gas has in the formation of bars. We also find that for
massive galaxies with stellar masses larger than 10$^{10} M_{\odot}$, at fixed
stellar mass, the bar fraction decreases with increasing global halo mass (i.e.
halo mass measured up to a radius of the order of the HI disk extent).
