[en] One of the main sources of uncertainty in the asteroseismic models of the Sun and solar-like stars is the poor match between predicted oscillation frequencies and observed ones in the very high frequency domain. Today, effects of turbulence, diffusion, etc., i.e., the so-called "surface effects" are signaled as possible responsible for such a discrepancy. We show that the effect of the stellar deformation due to rotation is of the same order or even larger than these effects. We show that rotation effects, are important for the asteroseismic analysis of the Sun and solar-like stars and they cannot be neglected when modeling such stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Suárez, J. C.; IAA-CSIC
Goupil, M. J.; Observatoire de Paris, LESIA, CNRS UMR 8109
Reese, Daniel ; Observatoire de Paris > Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA)
Samadi, R.; Observatoire de Paris, LESIA, CNRS UMR 8109
Lignières, F.; Laboratoire d'Astrophysique de Toulouse-Tarbe (LATT), Université de Toulouse, UPS
Rieutord, M.; Laboratoire d'Astrophysique de Toulouse-Tarbe (LATT), Université de Toulouse, UPS
Lochard, J.; Observatoire de Paris, LESIA, CNRS UMR 8109)
Language :
English
Title :
Rotation Effects as Possible Responsible for the Surface Effects on the Sun and Solar-Type Stars
Publication date :
2013
Event name :
20th Stellar Pulsation Series
Event place :
Granada, Spain
Event date :
from 5-9-2011 to 11-9-2011
Audience :
International
Main work title :
Stellar Pulsations
Main work alternative title :
[en] Impact of New Instrumentation and New Insights
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