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Fig. 8


Radial profiles of the temperature distribution and effective Toomre Q parameter for all simulations with Rdisk = 100 and t = 1.5 Tdisk. As the density distribution the temperature shows a spread-out for the inner and outer parts. This is much more pronounced for the simulations with Qinit = 1, whereas the runs with Qinit = 3 roughly follow the initial distribution. For Qinit = 3, the effective Q parameter stays well above the threshold for marginal stability. In comparison, the effective Q in the Qinit = 1 runs dips below the threshold at the positions with increased density (i.e., fragmenting regions, compare Fig. 7).

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