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={Hans-G. Ludwig and R'eza Samadi and M. Steffen and Thierry Appourchaux and Frédéric Baudin and K'evin Belkacem and Patrick Boumier and M-J. Goupil and Eric Michel},
  journal={Astronomy and Astrophysics},
We used a series of CO5BOLD hydrodynamical model atmospheres covering stellar objects from white dwarfs to red giants to derive theoretical estimates of the photometric and photocentric stellar variability in wavelength-integrated light across the Hertzsprung-Russell diagram. We validated our models against solar measurements from the SoHO/VIRGO instrument. Within our set of models we find a systematic increase of the photometric as well as photocentric variability - which turn out to be… 

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