Fig. 1

Simulations of 3D hydrodynamics in stellar atmospheres. Examples of emergent intensity patterns during granular evolution on the surface of a 12 000 K white dwarf (left) and a 3800 K red giant, obtained from modeling with the CO 5BOLD code. The areas differ by many orders of magnitude: 7 × 7 km2 for the white dwarf and 23 × 23 for the giant.
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