Protostars and Planets VI, Heidelberg, July 15-20, 2013
RADIATIVE HYDRODYNAMICAL SIMULATIONS OF PROTOPLANETARY DISKS
Hanawa, Tomoyuki (Chiba University)
Harara, Tetsuya (Chiba University)
We show 1D multi color radiative hydrodynamical simulations in which vertical oscillation is excited by irradiation. The oscillation has a node between hot surface layers and cold disk main body. When the cold main body is compressed, the hot surface layers expand to receive more radiation from the star. When the main body expands, the hot surface layers are compressed to receive less. Thus the main body has a higher pressure in the expansion than in contraction. As a result, the oscillation is overstable. The oscillation changes brightness at various wavelengths including the molecular line spectra through the Doppler shift. The oscillation may result in the mass loss.
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