Spectral Variability of the Be Star HD 152478: Evidence for Magnetized Wind?

M.A. Pogodin, N.A. Drake, E.G. Jilinski, V.G. Ortega, La Reza R. de

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике

Аннотация

Results of a spectroscopic investigation of the southern Be star HD 152478 are presented. Five spectra of the object were obtained in 2007 - 2009 with the high-resolution (R = 48,000) FEROS spectrograph installed at the 2.2-m telescope of the European Southern Observatory (ESO) in Chile. Notable variations of line profiles have been found for a number of elements (H I, He I, Fe II, etc.). The analysis of the variability has shown that the widely accepted hypothesis of ``one-armed perturbation'' drifting in the equatorial gaseous disk is not confirmed by the observations. We suggest an alternative interpretation of the observed variability in the assumption of a variable magnetized stellar wind of flattened geometry, flowing close to the equatorial disk.
Язык оригиналаанглийский
Название основной публикацииProc. of Conf. “Magnetic Stars”, SAO, Russia, August 27– Sept.1, 2010
ИздательСАО РАН
Страницы366-373
ISBN (печатное издание)978-5-7422-3156-1
СостояниеОпубликовано - 2011

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Pogodin, M. A., Drake, N. A., Jilinski, E. G., Ortega, V. G., & de, L. R. R. (2011). Spectral Variability of the Be Star HD 152478: Evidence for Magnetized Wind? В Proc. of Conf. “Magnetic Stars”, SAO, Russia, August 27– Sept.1, 2010 (стр. 366-373). САО РАН.