Properties of barred galaxies in the MaNGA galaxy survey
  We present the initial results of a census of 684 barred galaxies in the
MaNGA galaxy survey. This large sample contains galaxies with a wide range of
physical properties, and we attempt to link bar properties to key observables
for the whole galaxy. We find the length of the bar, when normalised for galaxy
size, is correlated with the distance of the galaxy from the star formation
main sequence, with more passive galaxies hosting larger-scale bars. Ionised
gas is observed along the bars of low-mass galaxies only, and these galaxies
are generally star-forming and host short bars. Higher-mass galaxies do not
contain H{\alpha} emission along their bars, however, but are more likely to
host rings or H{\alpha} at the centre and ends of the bar. Our results suggest
that different physical processes are at play in the formation and evolution of
bars in low- and high-mass galaxies.
