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Celestial Snow Angel : ウィキペディア英語版
Sh2-106

Sh2-106 is an emission nebula and a star formation region in the constellation Cygnus. It is a H II region estimated to be around 2,000 ly (600 pc) from Earth, in an isolated area of the Milky Way
In the center of the nebula is a young and massive star that emits jets of hot gas from its poles, forming the bipolar structure. Dust surrounding the star is also ionized by the star. The nebula spans about 2 light-years across.〔(【引用サイトリンク】title=Young star rebels against its parent cloud )
==Central star==
The central star, a source of infrared radiation usually referred to as S106 IR or S106 IRS 4, is believed to have been formed only 100,000 years ago.〔(【引用サイトリンク】title=Star Forming Region S106 )〕 It is a massive star, approximately 15 solar masses. Two jets of matter streaming from its poles heat surrounding matter to a temperature of around 10,000°C.〔 Dust that is not ionized by the star's jets reflect light from the star. With an estimated surface temperature of 37,000°K, it is classified as a type O8 star. It loses around 10−6 \beginM_\odot\end per year in solar winds, ejecting material at around 100 km/s.
Studies of images has revealed that the star-forming region has also created hundreds of low-mass brown dwarf stars〔 and protostar.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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