The Galaxy Population In Voids: Are All Voids The Same?
  The influence of under-dense environments on the formation and evolution of
galaxies is studied by analysing the photometric properties of ~200 galaxies
residing in voids, taken from our SDSS DR10 void catalogue up to z ~0.055. We
split void galaxies into two subsamples based on the luminosity density
contrast of their host voids: 'sparse void' {\delta}_s = {\delta} < -0.95 and
'populous void' {\delta}_p = {\delta} > -0.87. We find that galaxies in sparse
voids are less massive than galaxies in populous voids. The luminosity
distribution of galaxies in populous voids follows the same distribution
observed across the SDSS survey in the same redshift range. Galaxies in the
sparse voids are also bluer suggesting that they may be going through a
relatively slow and continuous star formation. Additionally, we find that the
luminosity function of galaxies in populous voids is represented with the
Schechter function whereas the same does not hold for sparse voids. Our
analysis suggests that the properties of a host void plays a significant role
in the formation and evolution of the void galaxies and determining the large
scale evolution of voids is an important step to understand what processes
regulate the evolution of galaxies.
