MAIN RESULTS OF MAGNETIC FIELD OF CP STARS STUDIES WITH THE 6M TELESCOPE BTA IN LAST DECADE (2005-2019).

Abstract

Spectropolarimetric observations of more than 200 chemically peculiar stars have been carried out during 2005-2019 at the 6m telescope with the aim of searching for the presence of stellar stellar magnetic fields. Magnetic fields have been detected in 80 of them. Different correlation between magnetic fields and anomalies in the energy distribution in the continua of the stars have been considered. We have studied magnetic fields and other physical parameters of chemically peculiar stars in Orion OB1 association. We have obtained at least 500 zee-man spectra for 55 very young stars, we have found 10 new magnetic stars in association. We have studied very slow rotation of magnetic stars with period of rotation more than 1 year. We have found very long period of rotation for three stars: 3.7 years for HD 18078, 29 years for HD 50169 and 17 years for HD 965. The results of unique star observations are discussed.