SPECTRAL VARIABILITY OF THE UNUSUAL SOUTHERN Be STAR HD 152478
In: Odessa Astronomical Publications; Том 23 (2010); 94-97; Том 23 (2010): Odessa Astronomical Publications; 1810-4215; (2010)
Online
Elektronische Ressource
We present results of the spectroscopic investigationof the unusual southern Be star HD 152478. Fiveechelle high-resolution spectra of the object wereobtained in 2007 - 2009 with the FEROS spectrographmounted at the 2.2 m telescope of the European Southern Observatory (La Silla, Chile). The star exhibitsa specific remarkable variability of the numerous lineprofilesofsuchelementsasHi,Hei,Feii,etc. Theanalysis of the spectral behaviour of the object hasshown that the assumption of global oscillations inthe rotating equatorial gaseous disk is not confirmedby the observations. The alternative hypothesis of avariable magnetized stellar wind of flattened geometryflowing close to the equatorial disk can qualitativelyexplain the observed profile variations.
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SPECTRAL VARIABILITY OF THE UNUSUAL SOUTHERN Be STAR HD 152478
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Quelle: | Odessa Astronomical Publications; Том 23 (2010); 94-97; Том 23 (2010): Odessa Astronomical Publications; 1810-4215; (2010) |
Veröffentlichung: | 2010 |
Medientyp: | Elektronische Ressource |
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