Structural properties of faint low surface brightness galaxies
  We study the structural properties of Low Surface Brightness galaxies (LSB)
using a sample of 263 galaxies observed by the Green Bank Telescope (Schneider
et al 1992). We perform 2D decompositions of these galaxies in the SDSS $g$,
$r$ and $i$ bands using the GALFIT software. Our decomposition reveals that
about $60\%$ of these galaxies are bulgeless i.e., their light distributions
are well modelled by pure exponential disks. The rest of the galaxies were
fitted with two components: a Sersic bulge and an exponential disk. Most of
these galaxies have bulge-to-total (B/T) ratio less than 0.1. However, of these
104 galaxies, $20\%$ have $B/T > 0.1$ i.e., hosting significant bulge component
and they are more prominent amongst the fainter LSBs. According to $g - r$
colour criteria, most of the LSB galaxies in our sample are blue, with only 7
classified as red LSBs. About $15\%$ of the LSB galaxies (including both blue
and red) in our sample host stellar bars. The incidence of bars is more
prominent in relatively massive blue LSB galaxies with very high gas fraction.
These findings may provide important clues to the formation and evolution of
LSB galaxies - in particular on the bar/bulge formation in faint LSB disks.
