The "egg whites" of the "double yellow egg" in the universe saw it

Culture art map Yu Jingchuan paintings, pictures of the Yunnan Observatory of the Chinese Academy of Sciences

【Technological frontier】

Our newspaper, Beijing, July 7th (Reporter Qi Fang) Most of the glowing celestial bodies in the sky are stars. About half of the stars are located in the double star system, and the double stars have the comparison of the comparison of the packets. "". Theoretical scholars speculate that the "double yellow egg" "egg whites" may be thrown away. However, because the process of coexistence is very short, it has never been confirmed by astronomical observation.

The team led by Academician Han Zhanwen, a Chinese Academy of Sciences Yunnan Observatory, and the team led by the National University of Australia Chris Wolf. For the first time, the direct evidence of the double star has a co -evolution process in the observation -it is found that the double star who has just completed the coexistence of the bag The tossed coexistence layer is leaving the double star system at a speed of about 200 kilometers per second. On July 7, Beijing time, this achievement was published online in the Royal Monthly Monthly Monthly Monthly of the International Academic Journal.

Researcher Chen Xuefei, deputy director of the Yunnan Observatory, introduced that Double Star turned against each other under the action of gravity. The two -star evolution will change the existing fate of the stars, forming a celestial body that occupies an important position in modern astronomy research, "the most mysteries of the star world, and we can understand the universe more deeply."

The two -star coexistence evolution is a vital process of the evolution of double stars -one star among the double stars is wrapped in the outer layer due to the severe expansion of material losses, forming a common packaging layer composed of gas. The next destiny of these two stars is determined by the development of the coexistence layer: if the coexistence of the packaging layer is thrown, the double star will form a short cycle double star, or a star.

Through observation data such as the 2.3 -meter wide -looking telescope of the National University of Australia and the Kaipuler satellite through the Australian University of Australia, it was found in the southern hemisphere. Getting closer and closer, there is a shell that is expanding around, leaving the double star at a speed of about 200 kilometers per second.

The first author of the article, Dr. Li Jiangdan, Yunnan Tianwen Station of the Chinese Academy of Sciences, said: "This expansion shell is proven to be a coexistence of a coexistence that was thrown by the double star about 10,000 years ago. The rail movement friction will take away the rail angular volume. This is a new corner motion loss mechanism except the stagnation effect, gravitational wave radiation and quality loss. "

Some evaluations believe that this discovery is a milestone in the field of double -star research -before that, scientists can only describe this process roughly, not accurate numerical simulation, and no direct observation evidence. Han Zhanwen said: "This achievement will open a more accurate astronomical observation of the double -star system, and it will also help humans to further reveal the scientific puzzles such as dark energy."

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