Real hammer!Double -star partner cover a bed "quilt"

Text ｜ "China Science News" reporter Gan Xiao

Double star exists in the artistic map of "co -owned layer" artistic map, metaphor of Jingchuan Painting National Observatory's Photo Conferry

Stars are a key for us to open the door of the universe. Different from the stars closest to the earth, the sun, most stars in space will have their own "partner" at a certain stage of their lives, forming a "double star system" together to complete the subsequent evolution process.

On July 7, the British "Royal Astronomy Monthly Monthly" released a scientific discovery jointly completed by scientists in China and Australia. The team of academicians of the Chinese Academy of Sciences, the team led by Han Zhanwen, a researcher at the Yunnan Tianwen Station of the Chinese Academy of Sciences, and the Star Thako team led by the Australian University of Australia, Chris Wolf, for the first time discovered the direct evidence of the double star existence.

National Observatory researcher Zhao Gang commented, "This original work has opened up a new research direction, which makes us possible to restore the early physical properties and state of the formation and evolution of the two stars to the two stars of dense celestial bodies in the near future."

The two -star evolution will change the existing fate of the stars. In the subsequent "Star", the double stars will form a celestial body that occupies an important position in modern astronomy research.

As early as 1976, Polish American scientist Bolitan Piccuski proposed theoretical predictions, pointing out that the evolution of double stars existed in the compassion, which will profoundly affect the ending of the fate of double stars.

However, in the past half a century, no scientists have really observed the existence of the coexistence.

Han Zhanwen explained, "One star among the double stars has expanded violently due to material losses, which wraps another star in the outsourcing layer to form a coexistence layer. Two egg yolks are the star itself, and the egg whites have a coexistence layer. "

In order to find the true existence of the coexistence, scientists between China and Australia, through the Australian National University of Australia's 2.3m wide -looking telescope and the Capeler satellite, found the 23,000 -year -old dwarf star J1920 from the earth in the southern hemisphere.

Li Jiangdan, the first author of the paper and Dr. Yunnan Tianwen Station, introduced that scientific researchers used the observation data to conduct light curves and spectral observations, which received the relevant parameters of the double star. The analysis results found that the distance between the two stars is getting closer and closer, and there is a shell that is expanding around them, leaving the double star at a speed of about 200 kilometers per second.

"A series of analysis not only uses many existing sky patrol data, but also puts forward its own spectral observation needs. Scientific thought. "

Related data also shows that the double star is already in the late life, and even if it is covered with a "quilt", it will eventually evolve into a cold dwarf two stars.

The President of the National University of Australia and the 2011 Nobel Prize in Physics, Brian Schmidt, said that the major discovery opened a new way for the in -depth understanding of the compassion of the co -layer. "I sincerely wish that the future of Chinese astronomy is getting better and better, and to maintain effective international cooperation," he said.

Scientists expect that in the future, the existing Guo Shoujing telescope low -resolution spectrum data, resolution spectrum observations in the current time domain, and the unsubstation of my country's large -caliber astronomical optical telescope together will work together to solve more stars' mystery.

Related thesis information:

https://academic.oup.com/mnras/articleLookup/doi/10.1093/mnras/stac1768

"China Science News" (2022-07-07 The first edition of the news)

Edit | Zhao Lu

Capture | Zhihai

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