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Rotation on the oscillation spectrum of solar-like stars
Suárez, J. C.; Goupil, M.-J.; Reese, Daniel et al.
2011In Alecian, G.; Belkacem, K.; Samadi, R. et al. (Eds.) SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
 

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Keywords :
oscillations; rotation; pulsation; solar-like stars; stellar structure; stellar evolution
Abstract :
[en] One of the main sources of uncertainty in the asteroseismic models of solar-like stars is the poor match between predicted oscillation frequencies and observed ones in the very high frequency domain. Today, such deviation is usually corrected by fitting the affected frequencies with polynomials which are then physically explained by possible effects of turbulence, diffusion, etc., i.e., the so-called ``surface effects". In this work, we show that the effect of the stellar deformation due to rotation is of the same order or even larger than the aforementioned surface effects. Moreover, we show that rotation effects, even for the low velocities generally observed in solar-like stars, becomes important for the asteroseismic analysis and cannot be neglected when modeling such stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Suárez, J. C.
Goupil, M.-J.
Reese, Daniel ;  Observatoire de Paris > Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique
Samadi, R.
Lignières, F.
Rieutord, M.
Lochard, J.
Language :
English
Title :
Rotation on the oscillation spectrum of solar-like stars
Publication date :
01 December 2011
Event name :
Journées de la Société Française d''Astronomie & d'Astrophysique (SF2A)
Event organizer :
Société Française d''Astronomie & d'Astrophysique (SF2A)
Event place :
Paris, France
Event date :
from 20-6-2011 to 23-6-2011
By request :
Yes
Main work title :
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
Editor :
Alecian, G.
Belkacem, K.
Samadi, R.
Valls-Gabaud, D.
Pages :
249-252
Available on ORBi :
since 01 February 2013

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