Saturday , January 16 2021

The Yunnan Observatory has discovered a special dense double star system – one, on, all, this, out – science and technology daily



Source: Science and Technology Daily

Science and Technology Daily, Kunming, Dec. 12 (Starlight Star) The star of the Chinese Academy of Sciences' universal star has recently made an important study in the field of double stars of the double stars, working on a separate white dwarf star, double star, retriever D. After long-term monitoring and analysis, there is evidence that there is a common double-disc joint and a giant wooden-like star rotating around it. The International Astronomical Journal The journal Astrophysics published the latest online results.

The Retriver DE is a close binary system consisting of a dwarf white planet and a late-sequence star. Its orbit is parallel to the line of sight, which causes the two sub-stars to hide and cover each other. This type of white dwarf and the main sequence star have experienced a stage in the development of public evolution, so it is very important and interesting to discover and explore the planets around them. A solution to scientific problems will deepen the evolution of planet formation and co-cladding. A new understanding.

Since March 2009, Han Zhongtao and others from the star constellations of star Yunnan star star variable research group used a number of small and medium telescopes at home and abroad continuously monitor the DE retriever, combined with data released by the American Association variable star observer, found that its orbit is fast , While finding that the period presents a periodic oscillation with an amplitude of 28 seconds.The fast track indicates that a disc with two strands of material generates angular momentum from the system, the mass of the disk is on the order of several tenths of thousands to several thousand of the sun, The periodic oscillation of small amplitudes reveals the distance the dog has And a huge tree-like chip on 6 astronomical units, and detailed calculations show that the mass of the giant planet is 0.01 times the mass of the sun and moves along a circular orbit, showing that the DE retriever is a special dense binary system with a double- In addition, they suggested that the giant planet may belong to the second generation of planetary objects, the same source of the double disc of a double star, which was created during the evolutionary period of public cladding.





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