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The new spectropolarimetric spectra of HD157087 obtained recently withESPaDOnS at CFHT are analysed to verify the nature of this object. Thefundamental stellar parameters $T_{\rm eff}$ = 8882 K, $\log{g}$=3.57 have beenobtained for HD157087 from the analysis of nine Balmer line profiles in twoavailable spectra. Comparison of the results of our abundance analysis with thepreviously published data shows a variability of average abundance with timefor some chemical species, while the abundance of other elements remains almostthe same. The abundance analysis also reveals evidence of a significantabundance increase towards the deeper atmospheric layers for C, S, Ca, Sc, V,Cr, Mn, Co, Ni and Zr. Together with the found enhanced abundance of Ca and Scthis fact contradicts the classification of HD157087 as a marginal Am star.Analysis of the available measurements of radial velocity results in detectionof long periodic and short periodic variations. The long periodic variationsupports the idea that HD157087 is an astrometric binary system with a periodhigher than 6 years. The presence of short periodic variation of $V_{\rm r}$,as well as the detection of temporal variation of average abundance suggestthat HD157087 may be a triple system, where a short periodic binary rotatesaround a third star. In this case, the short periodic binary may consist ofslowly rotating Am and A (or Ap with weak magnetic field) stars that havesimilar effective temperature and surface gravity, but different abundancepeculiarities.

Project VeSElkA: Search for vertical stratification of element abundances in HD157087