Friday , August 12 2022

The Observatory & # 39; Yunnan discovered a special dual system & # 39; double style – one, for, all, this, out – Science and Technology & # 39; Daily



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2018-12-13 01:16:38 Source: Science and Technology & # 39; Daily

Science and Technology & # 39; Daily, Kunming, 12 & # 39; December (Reporter Zhao Hanbin) Group & # 39; Research and Double Star Variable Star Astronomy Observatory of & # 39; Yunnan Chinese Academy of Sciences recently made an important result & # 39; research in the field of dense stellar double stars. After monitoring and long-term analysis, there is evidence that there is a double disc of common materials like wood giant planet rotating around. The international academic journal Astrophysics astronomical Magazine published the latest results online.

The Retriever DE binary system consisting of close white dwarf stars and star & # 39; type main sequence late. Its orbital plane is parallel to the line of vision, and cause both sub-stars each other and hide covering. This type of & # 39; white dwarf star and the main sequence stage experienced & # 39; public coatings evolution. Therefore, it is very important and interesting to discover and studying exoplanets rotating around. The solution & # 39; scientific problems will enhance the evolution of planet formation and common coating. New Understanding.

Since March 2009, Han Zhongtao and others from Group & # 39; R Double Star and Variable Star Observatory & # 39; Yunnan used a number of & # 39; sized telescopes at home and abroad to monitor continuously and in conjunction with DE Retriever & # 39; data released by the American Variable Star Observer Association found that its orbit is accelerated. Attenuation, while also found that the period shows periodic oscillations with & # 39; range & # 39; 28 seconds. The orbit quickly reveals that disk cushioning material commonly stranded pulling sistema.Il angular momentum of the mass of the disk is on the order of & # 39; & # 39 just ten; thousand to a few thousand of & # 39; sun; periodic oscillation & # 39; small amplitudes shows the distance dogs There are giant plants such as wood f & # 39; about 6 astronomical units. The detailed calculations show that the mass of the giant planet is 0.01 times the mass of the sun moving along near circular orbit. These findings indicate that DE Retriever binary system & # 39; special density b & # 39; that & # 39; material & # 39; double rope and giant planet similar to wood. In addition, they also suggested that the giant planet can & # 39; belongs to the second generation & # 39; planetary objects, the same source as the common star & # 39; double stars, which is formed during the period & # 39; public coatings evolution.




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