Abstract
We discuss the evolution of gas and dust in protoplanetary disks, first considering removal of the gas from the disks. Using a simple model, we argue that it is difficult to remove all the disk gas solely by viscous accretion. We discuss photoevaporation as a plausible mechanism for removing the disk gas, and estimate the timescale of gas removal. We then discuss growth of the dust particles into planetesimals. The dust particles first sediment to the midplane of the disk and then radially migrate toward the central star. We estimate the growth timescale during sedimentation and discuss the growth of dust bodies as they move radially toward the star.
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Takeuchi, T. (2008). From Protoplanetary Disks to Planetary Disks: Gas Dispersal and Dust Growth. In: Mann, I., Nakamura, A., Mukai, T. (eds) Small Bodies in Planetary Systems. Lecture Notes in Physics, vol 758. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76935-4_1
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