Spectral Energy Distributions of Protoplanetary Disks: Effects of Growth and Settling of Dust Particles

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Scientific paper

Recent mm/sub-mm and IR observations indicate the evidence of disk formation around not only isolated young stars but also many young stars in binary or multiple systems. We calculate spectral energy distributions (SEDs) of such young stars with disks using our passive disk model and compare the results with observational data in order to study the internal structure of disks in binaries and possible formation of planetary systems. In the calculation we consider the effects of growth and settling of dust particles in protoplanetary disks. From the results it is found that in close binary systems the disk masses are relatively low and settling of dust particles is hard to occur as compared with disks in wide binaries or around isolated stars. This is attributable to gravitational perturbation from the companion star, which disturbs formation of planetary systems in disks in close binary systems.

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