Barlenses in the CALIFA survey: combining the photometric and stellar
  population analysis
  We investigate barlenses in the Calar Alto Legacy Integral Field Area
(CALIFA) survey galaxies, studying their morphologies, stellar populations and
metallicities. Multi-component decompositions are made using the Sloan Digital
Sky Survey (SDSS) images and making GALFIT models, fitting besides bulges,
disks and bars, also barlenses, which are the face-on counterparts of
Boxy/Peanut bulges. Similar GALFIT models as were made for the galaxies, were
made also for the simulation snap-shots. For the stellar populations and
metallicities in the various structure components CALIFA IFU-observations are
used. We show that, when present, barlenses account for a significant portion
of light of photometric bulges (i.e. the excess light on top of the disks),
which highlights the importance of bars in accumulating the central galaxy mass
concentrations in the cosmic timescale. Bars and barlenses are found to have
similar cumulative stellar age and metallicity distributions. This is the first
time that a combined morphological and stellar population analysis is used to
study barlenses. We show that their stars are accumulated in a prolonged time
period, concurrently with the evolution of the narrow bar.
