A giant 'ice disk' surrounding a 23 million year old 'star' [Now in space]

What is happening in a star that is 23 million years old? Our sun has a history of about 4.6 billion years. What is happening in a young star that is 23 million years old can provide clues to our sun's past.



NASA's James Webb Space Telescope succeeded in capturing a related phenomenon. There is a star called 'HD 181327' about 155 light years away from Earth. It is estimated to be about 23 million years old.



When the James Webb Space Telescope observed this place, it confirmed a huge 'icy disk' centered around the young star. It was surrounded by a dusty debris disk containing frozen water.



The James Webb Space Telescope confirmed a huge 'icy disk' surrounding a young star that is 23 million years old. [Photo = NASA, ESA, CSA, Ralf Crawford]



Astronomers have predicted that frozen water would be dispersed around the star. The research team confirmed the existence of crystalline water ice using the spectrum analyzer of the James Webb Space Telescope.



Water ice is considered an essential component of disks around young stars. It has a major impact on the formation of giant planets. The existence of crystalline water ice in a dusty disk was confirmed.



Dr. Chen Xie of Johns Hopkins University, the lead author of the paper published in Nature, explained, "The James Webb Space Telescope clearly detected not only water ice, but also crystalline water ice found in Saturn's rings and icy objects in the solar system's Kuiper Belt."



Co-author Christine Chen, an astronomer at the Space Telescope Science Institute, said, "The data obtained this time are similar to recent telescope observations of Kuiper Belt objects in our solar system."



The results of this study open the way for researchers to study how this process works in more star systems using the James Webb Space Telescope in the future.



The James Webb Space Telescope analysis revealed that there is a considerable distance between the star and the dust disk. The dust disk of this star, which is further away, is similar to the Kuiper Belt of our solar system, where dwarf planets, comets, and other pieces of ice and rock have been found, and sometimes colliding with each other.



This suggests that the Kuiper Belt of our solar system billions of years ago was similar to the dust disk of the star observed this time.



"HD 181327 is a very active stellar system," said astronomer Chen. "Regular and continuous collisions are occurring in the debris disk."



"The presence of water ice helps to promote planet formation," explained Dr. Xie. "The icy material can ultimately be transferred to terrestrial planets, which can form in these planetary systems over hundreds of millions of years."





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