Fig. 3.
Upper left: density profiles of the collapsing model core at different times, indicated in the figure. The green line shows the initial density profile. Upper middle: infall velocity profile of the model core at different times. Upper right: gas (blue) and dust (red) temperatures as functions of radius at different times. Lower left and lower middle: abundances of the cooling molecules as functions of radius at different times. Lower right: gas and dust temperatures at different times, zoomed into the innermost 15 000 AU of the core.
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