Hideko NOMURA : Kobe University
Dust evolution in photoevaporating protoplanetary disks
Photoevaporation of protoplanetary disks induced by ultraviolet photons from the central stars is known as one of possible mechanisms for disk dispersal. In addition, photoevaporating flow is expected to affect the dust evolution, which will lead to the planet formation in the disks. In this work we make a detailed model of gas density, temperature, and velocity structure of photoevaporating disks to find that submicron-sized-dust-particles could evaporate with the gas at the inner disk. And then we study the dust evolution in the disks by numerically solving a coagulation equation for dust particles, taking into account the upward motion of the particles, and discuss the effects on observational properties.Last modified: Sun Jul 9 18:09:39 2006