Parent Stars of Extrasolar Planets. XII. Additional evidence for trends   with vsini, condensation temperature, and chromospheric activity
  Several recent studies have reported differences in vsini, abundance-condensation temperature trends, and chromospheric activity between samples of stars with and without Doppler-detected planets. These findings have been disputed, and the status of these results remains uncertain. We evaluate these claims using additional published data and find support for all three. 
Guillermo Gonzalez
astro-ph.SR