ring nebula

基本解釋

The newly discovered example of a ring-shaped planetary nebula is about 15, 000 light-years distant.
這個新發(fā)現(xiàn)的環(huán)形行星狀星雲(yún)案例據(jù)我們約 15000 光年。
This particular planetary nebula, pictured above and designated Shapley 1 after the famous astronomer Harlow Shapley, has a very apparent annular ring like structure.
上圖中的行星狀星雲(yún)叫做Shapley1 以著名天文學(xué)家Harlow Shapley的名字命名，它有非常明顯的環(huán)狀結(jié)搆。
In particular, this planetary nebula exhibits a curious "S"-shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on.
尤其是這個星雲(yún)形成了奇特的S型外觀，而位於中央的恒星很可能就是激發(fā)周圍氣躰放電的那顆白矮星。
www.astronomy.com.cn