Kholtygin A.F. Non-Radial Pulsations., (2007)

Kholtygin A.F.
Non-radial pulsations of early-type stars (in russian) in Methods of spectroscopy in thew modern Astrophysics, Proc. of the Conference, held in Institiute of Astronomy, September 13-15, 2006, Moscow, Eds: L.I.Mashonkina, M.E.Sachkov, pp. 316-335 (2007)

Nonradial pulsations in early spectral class stars. The results of the searching and analysis of the microvariability of the line proôle in spectra of bright OB-stars are presented. More than 1000 spectra of lambda Ori A, delat Ori A, alpha Cam, 19 Cep, iota Her, rho Leo and other stars were obtained with using 1-m and 6-meter telescope of Special Astrophysical Obser- vatory and 1.8-m telescope of Bohinsan Astronomical Observatory (Korea) were obtained. The regular line proôle variability (lpv) on the time scales from hours to days, connected with the non-radial pulsations, was revealed. At the ôrst time the quasi-regular CIII lambda 5696 line proôle variations in the spectra of delta Ori A was detected.