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Abstract: As part of a long term observational project, we are investigating themacroturbulent broadening in O and B supergiants Sgs and its possibleconnection with spectroscopic variability phenomena and stellar oscillations.We present the first results of our project, namely firm observational evidencefor a strong correlation between the extra broadening and photosphericline-profile variations in a sample of 13 Sgs with spectral types ranging fromO9.5 to B8.



Autor: S. Simón-Díaz, A. Herrero, K. Uytterhoeven, N. Castro, C. Aerts, J. Puls

Fuente: https://arxiv.org/







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