  Narrow band multifilter photometry of the galaxy populations of four galaxy
clusters at z=0.4-0.5 has provided us with a sample of 73 E+A galaxies which
are secure cluster members. For 34 of them HST images are available (WFPC2). We
have determined surface brigthness profiles and by means of an exponential or
r^1/4 law fit we have classified the galaxies on the basis of their bulge to
disk ratio. We have found that most of these galaxies are disk systems judging
from the exponential nature of their profiles. We have also derived color
gradients for 10 E+A galaxies in Cl0016+16 to study the spatial distribution of
the starburst and to distinguish among the physical mechanisms at its origin.
Color gradients indicate that most of the E+A galaxies in Cl0016+16 show little
spatial variation in V-I colors (restframe U-V). Thus, our large and
homogeneous sample of distant E+A galaxies confirms the claim that their
enhanced star formation is a galaxy-wide phenomenon.
