DEPENDENCE OF CHEMICAL PECULIARITIES ON M AGNETIC-FIELD IN MAGNETIC CP-STARS

Peculiarities of chemical composition, Balmer jump, and depression at lambda 5200 observed in the spectra of peculiar stars are considered a s a function of magnetic field. The peculiarities are shown to growth with increasing surface magnetic field up to 2 - 4 kG, the peculiariti es remaining nearly constant for stronger magnetic fields. The macrotu rbulence usually preventing the diffusion of chemical elements and res ponsible for chemical peculiarities due to radiation pressure and surf ace gravity is assumed to be completely suppressed at such strong magn etic fields.