Schedule Oct 25, 2011
From Sun to Stars: Macroscopic and Microscopic processes for solar-like stars
Sylvaine Turck-Chièze (SAp/IRFU/CEA)

Several physical processes must be added to the classical ones to improve the interpretation of the solar observations obtained with SoHO, SDO and PICARD. We show first results and comparisons with observations for rotation, mass loss, surface convection deduced from 3D simulations with and without sub surface magnetic field and turbulence. That last progress is interesting to go beyond the surface convection phenomenology such as the mixing length approximation or the full spectrum of turbulence. We shall also mention the radiative opacity theoretical and experimental studies and their consequences for stars of different metallicity. We deduce some hints for solar like stars observed with KEPLER or COROT and show our strategy to improve the absolute frequency predictions of Sun and solar like stars.

Related papers:
  • Blenski, T. et al., 2011, Phys. Rev. E, 84, Opacity of iron, nickel, and copper plasmas in the x-ray wavelength range: Theoretical interpretation of 2p-3d absorption spectra
  • D. Gilles et al. 2011, HEDP, 7, 312 Comparison of Fe and Ni opacity calculations for a better understanding of pulsating stellar envelopes
  • Piau L. et al. 2011, A&A, 526, 100, Surface convection and red-giant radius measurements
  • Piau L. et al. 2011, ApJ, in preparation "On the surface convection: Application to Sun and solar-like stars modelling and related predicting frequencies"
  • Stein, B. & Nordlhund, A. 1998, ApJ 499, 914 Simulations of Solar Granulation. I. General Properties
  • Turck-Chièze, S. et al. 2010, ApJ, 715, 1539 Seismic and dynamical solar models I The impact of the solar rotation history on neutrinos and seismic indicators
  • Turck-Chièze S., Piau L., Couvidat, S. 2011, ApJ, 731, L29 The solar energetic balance revisited by young analogs, helioseismology and neutrinos
  • Turck-Chièze S. et al. 2011, JPhCS, 271, 2035 Theoretical and experimental activities on opacities for a good interpretation of the seismic stellar probes
  • Turck-Chièze S. & Couvidat, S. 2011, RPPh, 74, 86901 (35 pages) Solar neutrinos, helioseismology and the dynamical Sun
  • Turck-Chièze, S. et al. 2011, Fujihara seminar proceedings, arXiv1109.4125 The long term dynamics of the solar radiative zone associated to new results from SoHO and young solar analogs

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