Shape, Color and Distance in Weak Gravitational Flexion
  Canonically, elliptical galaxies might be expected to have a perfect
rotational symmetry, making them ideal targets for flexion studies - however,
this assumption hasn't been tested. We have undertaken an analysis of low and
high redshift galaxy catalogs of known morphological type with a new
gravitational lensing code, Lenser. Using color measurements in the u-r band
and fit Sersic index values, objects with characteristics consistent with
early-type galaxies are found to have a lower intrinsic scatter in flexion
signal than late-type galaxies. We find this measured flexion noise can be
reduced by more than a factor of two at both low and high redshift.
