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Project VeSElkA (Vertical Stratification of Element Abundances) has beeninitiated with the aim to detect and study the vertical stratification ofelement abundances in the atmosphere of chemically peculiar stars. Abundancestratification occurs in hydrodynamically stable stellar atmospheres due to themigration of the elements caused by atomic diffusion. Two HgMn stars, HD53929and HD63975 were selected from the VeSElkA sample and analysed with the aim todetect some abundance peculiarities employing the ZEEMAN2 code. We present theresults of abundance analysis of HD53929 and HD63975 observed recently with thespectropolarimeter ESPaDOnS at Canada-France-Hawaii Telescope. Evidence ofphosphorus vertical stratification was detected in the atmosphere of these twostars. In both cases, phosphorus abundance increases strongly towards thesuperficial layers. The strong overabundance of Mn found in stellar atmosphereof both stars confirms that they are HgMn type stars.

Project VeSElkA: results of abundance analysis for HD53929 and HD63975