Hostname: page-component-848d4c4894-jbqgn Total loading time: 0 Render date: 2024-06-29T22:47:12.312Z Has data issue: false hasContentIssue false
  • English
  • Français

Short-term instabilities in γ Velorum: a search for strange modes in variable stars

Published online by Cambridge University Press:  12 April 2016

John Bentley  and
P.L. Cottrell
John Bentley
Affiliation:
Mt. John University Observatory, Department of Physics & Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
P.L. Cottrell
Affiliation:
Mt. John University Observatory, Department of Physics & Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Strange mode instabilities in Wolf-Rayet stars have been proposed as the cause of clumping in the stellar wind. This, in turn, is suggested as a cause of line profile variations found on short time scales. High-frequency, short-duration, time-series spectroscopy was performed on the Wolf-Rayet star γ Velorum and analysis confirmed the results of a previous study of γ Velorum’s stellar wind which showed that the wind is indeed clumped, most likely from the predicted strange mode pulsations.

Type
Part 4. Early-type stars: B, A and F pulsators
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 247 - 250
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

Glatzel, W. 2001, Rev. Mod. Astr., 14, 245 Google Scholar
Hearnshaw, J.B., Barnes, S.I., Kershaw, G.M., Frost, N., Graham, G., Ritchie, R., Nankivell, G.R. 2002, Experimental Astronomy, 13, 59 Google Scholar
Kiriakidis, M., Glatzel, W., Fricke, K.J. 1996, MNRAS, 281, 406 CrossRefGoogle Scholar
Lépine, S., Eversberg, T., Moffat, A.F.J. 1999, AJ, 117, 1441 CrossRefGoogle Scholar