Oph-IRS 48 system

Astronomers made out protoplanetary of a dust trap

The astronomers working with data of new observatory of ALMA, for the first time made out  a dust trap in which comets and germs of future planets are formed round a young star. Supervision over the Oph-IRS 48 system located at distance of 400 light years from Earth, were carried out in the millimetric range with help of only a half of telescopes of observatory of ALMA. Nevertheless, permission of the image allowed to make out distribution of particles of a dust of the different size round a star. Scientists found out that rather large particles about a millimeter in size are distributed in a protoplanetary disk extremely unevenly. Instead of ring-shaped structure, which the astronomers expected to see, they found a form, in accuracy similar to a cashew nut. According to the scientists, the found area represents a dust trap, where particles of a space dust are capable to stick together with each Protoplanetary diskother, growing to the sizes about a kilometer. In other areas of a protoplanetary disk growth of clots is limited by their continuous mutual collision. Authors explain that in a dust trap of Oph-IRS 48 system most probably formation of comets, instead of full-fledged planets. Nevertheless, scientists expect to see just the same dust trap round other stars at the distance, which was more suitable for formation of large heavenly objects. Recently other group of astronomers managed to observe formation of a huge planet in constellation of the Fly with help of VLT telescope.



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