Hidden Binaries Among Magnetic CP Stars in Two Examples

Spectropolarimetric surveys of chemically peculiar or CP-stars that aim to the searches of stars hosting the strong and globally-organized magnetic field have increased the number of known magnetic CP's. At the same time, regular observations were carried out only for the limited sample of the stars. Hence, the problem of 'hidden' binary and multiple stellar systems among newly-discovered magnetic CP-stars is existing.