A triple protostar (protostar) that grows while vigorously inhaling a huge gas band like the vortex arms of a galaxy was captured by a radio telescope.
The European Southern Astronomical Observatory (ESO), which operates ALMA, a large-scale radio telescope in the Chilean Atacama Desert, announced on its official channel on the 4th that the triple protostar ‘IRAS’ developed by international astronomy research teams from Seoul National University, the United States, Taiwan, and Denmark. Introduced the observation results of ‘04239+2436’.
An international research team led by Seoul National University Department of Physics and Astronomy Professor Lee Jung-eun and Earth Science Education Professor Kwon Woo-jin tried to capture the reality of a protostar, the early stage of a star. In the process of observing 19 compressed protostar candidates with the large radio interferometer Alma, it was confirmed that the three protostars in ‘IRAS 04239+2436’ have three huge bands that supply gas, the material of the celestial body.
Imaginary map of ‘IRAS 04239+2436’, a triple protostar captured by an international research team participated by Seoul National University using the Alma radio telescope. <사진=ESO 공식 홈페이지>
An investigation official said, “As a result of observing the radio waves generated by the gas around ‘IRAS 04239+2436’ using Alma, the truth was revealed in detail.” There were three bands of gas that looked like vortex arms spanning an astronomical unit (one astronomical unit is about 150 million km).”
“We not only identified the mysterious gas belt, but also succeeded in deriving the speed at which gas moves from Alma’s frequency change,” said the official. I came to the conclusion that I play the role of a streamer who does.”
The research team gave meaning that this discovery revealed in detail the dynamic formation process of multiple protostars. Protostar is the initial stage of star birth, and most stars such as the sun are thought to be born in multistars with two or more stars, such as ‘IRAS 04239+2436’.
The triple protostar ‘IRAS 04239+2436’ (left) captured by the Alma Telescope. 1, 2, and 3 indicate gas bands in the form of vortex arms, respectively. Two protostars are distributed in area A and one in area B. On the right is ‘IRAS 04239+2436’ as seen through numerical simulation, and + indicates the location of each protostar. <사진=EOS 공식 홈페이지>
An official of the investigation said, “The formation mechanism of multiplicity where protostars gather is important in understanding the birth of a star, but it has never been observed in detail.” It is happening,” he explained.
“Streamers show how protostars grow as they inhale gas, but how they form is still unknown.” Additional high-resolution observations are needed,” he stressed.
Reporter Jeong Ian anglee@sputnik.kr
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