MAGNETOSPHERIC ACCRETION IN T TAURI STARS: OBSERVATIONAL TEST

Анотація

In the classical T Tauri stars (CTTS) the magnetic field plays an important role in the interaction between the star and the accretion disk. In 1996-2000 we have carried out an extensive spectroscopic and photometric monitoring of the extremly active CTTS RW Aur A in order to check for predictions of the magnetospheric accretion model. We find periodic rotational modulations in many spectral features, which may be explained as due to non-axisymmetric accretion, well in accordance with the model. The stable period (2.^d 64) was also found in the variations of the blue colours. Nevertheless, some of the important predictions of the model were not found in the star.