Kholtygin et al., Magn. Field Conf., August 2003 (2004)

Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astro.spbu.ru/staff/afk/Papers/2004/MgnFld2004abstr.html
Дата изменения: Fri Nov 19 16:09:10 2010
Дата индексирования: Tue Oct 2 03:52:55 2012
Кодировка:
Поисковые слова: южная атлантическая аномалия

Kholtygin et al., Magn. Field Conf., August 2003 (2004) Kholtygin A., Brown J., Fabrika S., Surkov A.
Magnetic field connected fast line profile variability in spectra of bright O supergiants
Magnetic stars, Proc. of the Intern. Conference, held in the Special Astrophysical Observatory of the Russian AS, August 27-31, 2003, Eds.: Yu. Glagolevskij, D. Kudryavtsev, I. Romanyuk, Nizhnij Arkhyz, p. 250-258. (2004)

Results of a study of fast line profile variability (lpv) in spectra of selected bright O-stars are reported. A regular component of {\em lpv} in spectra of the star lambda Ori A with estimated period P = 3^d have been detected. We suppose that the formation of long time-scale regular components of {\em lpv} can be explained in the framework of the magnetically confined wind-shock (MCWS) model of Babel & Montmerle (1997a). In the context of testing the MCWS model a program of searching for weak magnetic fields in bright O and early B stars is outlined. The possibility to measure weak longitudinal magnetic fields B = 100 G is demonstrated.