The Influence of the Dynamic State of Galaxy Clusters on Segregation
  Phenomena and Velocity Dispersion Profiles
  In this work we investigate the influence of the dynamic state of galaxy
clusters on segregation effects and velocity dispersion profiles (VDPs) for a
sample of 111 clusters extracted from SDSS-DR7. We find that 73 clusters have
Gaussian (G) velocity distribution and 38 clusters have a complex or
non-Gaussian (NG) velocity distribution. We also split the G and NG samples
into 'active' and 'passive' galaxies, according to their sSFRs and stellar
masses. Our results indicate a strong spatial segregation between active and
passive galaxies both in G and NG systems, with passive galaxies being more
central. We also found that the passive population in G systems is the only
family with lower velocity dispersions for the brightest galaxies ($M_r
\lesssim -22.75$), thus presenting velocity segregation with luminosity. The
similarity found between the VDPs of the galaxy populations in NG systems
indicate that these sets probably share a similar mix of orbits. We also found
a clear evolutionary trend for G systems, with brighter galaxies in richer
clusters having flatter VDPs. The scenario emerging from this study suggests a
direct relationship between segregation effects, VDPs and the dynamic state of
clusters.
