How similar is the stellar structure of low-mass late-type galaxies to
  that of early-type dwarfs?
  We analyse structural decompositions of 500 late-type galaxies (Hubble
$T$-type $\ge 6$) from the Spitzer Survey of Stellar Structure in Galaxies
(S$^4$G), spanning a stellar mass range of about $10^7$ to a few times
$10^{10}$ M$_\odot$. Their decomposition parameters are compared with those of
the early-type dwarfs in the Virgo cluster from Janz et al. They have
morphological similarities, including the fact that the fraction of simple
one-component galaxies in both samples increases towards lower galaxy masses.
We find that in the late-type two-component galaxies both the inner and outer
structures are by a factor of two larger than those in the early-type dwarfs,
for the same stellar mass of the component. While dividing the late-type
galaxies to low and high density environmental bins, it is noticeable that both
the inner and outer components of late types in the high local galaxy density
bin are smaller, and lie closer in size to those of the early-type dwarfs. This
suggests that, although structural differences between the late and early-type
dwarfs are observed, environmental processes can plausibly transform their
sizes sufficiently, thus linking them evolutionarily.
