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The new findings were presented by Cheng-Han Hsieh of Yale University 243rd Meeting of the American Astronomical Society. Thanks to the use of ALMA, one of the largest radio interferometers used to record millimeter and sub-millimeter waves Caused by cold and distant space objects.
The device is located on the Chajnantor Plateau in the Chilean Andes at an altitude of more than 5,000 metres. meters above sea level, and has previously provided many images of protoplanetary disks around young stars. New images of these objects show Class 0 and Class 1 disks that are much smaller than previously analyzed Class 2 disks. These classes indicate the age of the stars located at the center of these disks.
Protoplanetary disks
It is known that Class 2 disks contain gaps and ring structures, indicating that planet formation had already reached an advanced stage. “Early ALMA observations of protoplanetary disks have revealed many beautiful rings and gaps, which are potential sites for planetary formation,” said Cheng-Han Hsieh, a doctoral student at Yale. “I wondered when these rings and gaps started to appear in the discs.”
A new study shows that The structure begins to form when the disks are about 300,000 years old. Years, which is incredibly fast. Small disks can contain multiple rings and spiral structures, and if planets formed very early in the formation of planetary systems, it calls into question our full understanding of how their solar system counterparts formed.
Evolutionary sequence of protoplanetary disks with basic structures
Meanwhile, Hsieh explained It is difficult to confirm this with 100% accuracy, and how planets form is the subject of many studies. He also explained how important it is to discover gaps and rings, whether they are planets or some kind of anomaly:
This is due to the fact that Neither planets nor any infrastructure can form until the disk calms down and the disturbance subsides. Only future observations can tell us whether these are actually planets.
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