Discover the two -star evolution scientist for the first time discovered the direct evidence of the compassion for the evolution of the packaging layer

Starry sky has a covenant | Exploring the double -star evolution scientist discovered for the first time that there are direct evidence of the compassion of packaging

In the universe, about half of the stars exist in the form of a double star system. In modern astronomy theory, the formation of important celestial bodies such as double black holes, double neutron stars, and double -white dwarfs is the result of double stars coexistence. However, since the evolution of the double stars has proposed for nearly half a century, a total of co -layer has never been observed before.

A few days ago, the research team of Academician Han Zhan Wenwen, the Chinese Academy of Sciences Yunnan Observatory and the Australian National University Research Team. For the first time, "seeing" the co -owner that was expanded by the double stars to the space. Essence Related results were published online on the 7th in the British "Royal Astronomy Monthly".

In the two -star system, the two stars are around under the action of gravity. Two -stars have a coexisting evolutionary process. It is a vital process in the two -star evolution. In this process, one star among the double stars wraps the other star in the outer layer due to the severely expanded material losses to form a coexistence layer.

"The two -star system at this stage is like a 'double yellow egg', the double star is two 'egg yolks', and the coated layer is 'egg whites'." The stars are synthesized by the coexistence of the coexistence and synthesize a star; or the coexistence layer is thrown out, and the two stars form a short cycle double star.

In this study, the research team found the observation data of the 2.3 -meter wide -looking telescope of the 2.3 -meter wide -looking telescope of the Australian University of Australia, and found a distance from the 23,000 light -year dwarf dwarf Star J1920, the distance between the two stars, and the two stars. 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. This expansion shell is proven to be a coexistence of a coexistence that was thrown by double stars about 10,000 years ago.

In addition, the continuous rail contraction of the double star shows that there is a new corner motion loss in the rail corner volume of the rail movement of the packet residual substances and the two stars. mechanism.

"The significance of this discovery is to turn a theoretical vision into reality. Scientists not only see the evidence of the double -star coexistence of the component of the package for the first time in observation, but also can accurately portray this critical process through observation." Han Zhanwen said said Essence

Coordinated: Chen Fang, Liu Xinhui

Reporter: Zhang Quan

Produced by Star Studio

【Edit: Fangjialiang】

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