The study of protoplanetary disks, which is so necessary for understanding the process of planetary origin, is greatly complicated by the radiation of the star, which suppresses the radiation of the planet and the small size of the planets. But on the Subaru telescope there is a system that filters out the star's radiation and allows you to see the light of dust and gas. In the process of studying the star RYFau, such observations aroused the greatest interest. The star is located 460 light-years from Earth. The age is estimated at half a million years, the accretion disk is 70 AU in size. It was in this disk that scientists saw interesting, scattered radiation in the infrared part of the spectrum, which has nothing to do with the bulk of the disk. It is believed that it comes from its outer part of a rarefied layer of dust flying over the disk. This entire outer layer is hardly more than half the mass of the Earth's satellite in mass. But nevertheless, this layer may have an impact on the formation of planets inside the main part of the disk, since it contributes to the heating of the inner region.
