Primordial alignment of elliptical galaxies in intermediate redshift
  clusters
  We measure primordial alignments for the red galaxies in the sample of eight
massive galaxy clusters in the southern sky from the CLASH-VLT Large Programme,
at a median redshift of 0.375. We find primordial alignment with about
$3\sigma$ significance in the four dynamically young clusters, but null
detection of primordial alignment in the four highly relaxed clusters. The
observed primordial alignment is not dominated by any single one of the four
dynamically young clusters, and is primarily due to a population of bright
galaxies ($M_r<-20.5\ \rm{m}$) residing in the region 300 to 810 kpc from the
cluster centers. For the first time, we point out that the combination of
radial alignment and halo alignment can cause fake primordial alignment.
Finally, we find that the detected alignment for the dynamically young clusters
is real rather than fake primordial alignment.
