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Is macroturbulence in OB Sgs related to pulsations?
Published online by Cambridge University Press: 12 July 2011
Abstract
As part of a long term observational project, we are investigating the macroturbulent broadening in O and B supergiants (Sgs) and its possible connection with spectroscopic variability phenomena and stellar oscillations. We present the first results of our project, namely firm observational evidence for a strong correlation between the extra broadening and photospheric line-profile variations in a sample of 13 Sgs with spectral types ranging from O9.5 to B8.
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- Copyright © International Astronomical Union 2011
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