Hydrodynamical simulations of convection-related stellar micro-variability. II. The enigmatic granul

  title={Hydrodynamical simulations of convection-related stellar micro-variability. II. The enigmatic granul},
  author={H. Ludwig and R. Samadi and M. Steffen and T. Appourchaux and F. Baudin and K. Belkacem and P. Boumier and M. Goupil and E. Michel},
  journal={Astronomy and Astrophysics},
Context. Local-box hydrodynamical model atmospheres provide statistical information about a star’s emergent radiation field which allows one to predict the level of its granulation-related micro-variability. Space-based photometry is now sufficiently accurate to test model predictions. Aims. We aim to model the photometric granulation background of HD 49933 as well as the Sun, and compare the predictions to the measurements obtained by the CoRoT and SOHO satellite missions. Methods. We… Expand

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