Development and morphology of leading-following parts of sunspot groups
  The detailed sunspot catalogues, the DPD and SDD allow to study the leading and following parts of sunspot groups separately. We examine the equilibrium distance of the two parts, the speed of removal, the asymmetry of compactness and the area growth. The distributions of positive and negative tilts of sunspot groups are also examined. 
J. Murak\"ozy, T. Baranyi, A. Ludm\'any
astro-ph.SR