Morphometry as a probe of the evolution of jellyfish galaxies
  We explore the morphometric properties of a group of 73 ram pressure
stripping candidates in the A901/A902 multi-cluster system, at z$\sim$0.165, to
characterise the morphologies and structural evolution of jellyfish galaxies.
By employing a quantitative measurement of morphometric indicators with the
algorithm \textsc{morfometryka} on Hubble Space Telescope (F606W) images of the
galaxies, we present a novel morphology-based method for determining trail
vectors. We study the surface brightness profiles and curvature of the
candidates and compare the results obtained with two analysis packages,
\textsc{morfometryka} and \textsc{iraf/ellipse} on retrieving information of
the irregular structures present in the galaxies. Our morphometric analysis
shows that the ram pressure stripping candidates have peculiar concave regions
in their surface brightness profiles. Therefore, these profiles are less
concentrated (lower S\'ersic indices) than other star forming galaxies that do
not show morphological features of ram pressure stripping. In combination with
morphometric trail vectors, this feature could both help identify galaxies
undergoing ram-pressure stripping and reveal spatial variations in the star
formation rate.
