rjxie 发表于 2003-8-11 11:55

[酷图] 天鹅星云M17的原理。

Elements of the Swan Nebula
Credit & Copyright: Russell Croman
Explanation: In the depths of the dark clouds of dust and molecular gas known as M17, stars continue to form. Also known as the Omega Nebula and Horseshoe Nebula, the darkness of M17's molecular clouds results from background starlight being absorbed by thick filaments of carbon-based smoke-sized dust. As bright massive stars form, they produce intense and energetic light that slowly boils away the dark shroud. Colors in the above image were picked to highlight specific elements that emit nebular light: red indicates emission from sulfur, green from hydrogen, and blue from oxygen. The Swan Nebula is visible with binoculars towards the constellation of Sagittarius, lies 5000 light-years away, and spans 20 light-years across.

portiff 发表于 2003-8-13 20:13

炫

ak49 发表于 2003-9-7 02:24

这些颜色都是伪彩色么？

woodhorse 发表于 2004-6-5 20:05

是不是真实的颜色？

mike 发表于 2004-6-8 22:58

真的吗???真的吗?????

玄天凌龙 发表于 2004-6-9 09:55

太美了！

nngs 发表于 2004-6-9 11:11

回复: [酷图] 天鹅星云M17的原理。

最初由 rjxie 发表
.... red indicates emission from sulfur, green from hydrogen, and blue from oxygen ....

应该是伪彩色. 这段E文说, (本图选择了颜色来代表星云中元素的辐射颜色), 红代表来自硫的辐射, 绿代表氢, 蓝代表氧, ....
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