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Pulsations in hot supergiants
Godart, Mélanie; Grotsch-Noels, Arlette; Dupret, Marc-Antoine et al.
2014In Precision Asteroseismology, Proceedings of the International Astronomical Union, IAU Symposium, Volume 301
 

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Keywords :
stars: early-type; stars: oscillations; supergiants; Wolf-Rayet
Abstract :
[en] Massive stars are the cosmic engines that shape and drive our Universe. Many issues such as their formation, their stability and the mass loss effects, are far from being completely understood. Recent ground-based and space observations have shown pulsations in massive MS and post-MS stars, such as acoustic and gravity modes excited by the κ-mechanism and even solar-like oscillations. Theoretical studies emphasized the presence of strange modes in massive models, and recent theoretical analyses have shown that hot supergiants can pulsate in oscillatory convective modes. We review the instability domains of massive stars as well as their excitation mechanisms and present the latest results.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Godart, Mélanie ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Grotsch-Noels, Arlette;  Dept. of Astrophysics, Geophysics and Oceanography, University of Liège, Belgium
Dupret, Marc-Antoine ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Chaplin, William J.
Handler, Gerald
Pigulski, Andrzej
Language :
English
Title :
Pulsations in hot supergiants
Publication date :
01 February 2014
Event name :
Precision Asteroseismology
Event date :
August 2013
Main work title :
Precision Asteroseismology, Proceedings of the International Astronomical Union, IAU Symposium, Volume 301
Pages :
313-320
Commentary :
301
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