Angular Momentum across the Hubble sequence from the CALIFA survey
  We investigate the stellar angular momentum of galaxies across the Hubble
sequence from the CALIFA survey. The distribution of CALIFA elliptical and
lenticular galaxies in the $\lambda_{\rm Re}-\epsilon_{\rm e}$ diagram is
consistent with that shown by the Atlas$^\mathrm{3D}$ survey. Our data,
however, show that the location of spiral galaxies in this diagram is
significantly different. We have found two families of spiral galaxies with
particularly peculiar properties: (a) spiral galaxies with much higher
$\lambda_{\rm Re}$ values than any elliptical and lenticular galaxy; (b)
low-mass spiral galaxies with observed $\lambda_{\rm Re}$ values much lower
than expected for their apparent flattening. We use these two families of
objects to argue that (1) fading alone cannot explain the transformation of
spiral to lenticular galaxies, and (2) that those low-mass spiral galaxies are
in fact dark matter dominated, which explains the unusually low angular
momentum.
