ngc6914复合体
(原标题: The NGC 6914 Complex)
2022-07-07
浏览次数: 16
通过对比研究，这张色彩斑斓的天空景观展现了ngc6914附近的恒星、尘埃和发光气体。星云的星际复合体位于大约6000光年之外，朝向高耸的北方星座天鹅座和我们银河系的平面。模糊的星际尘埃云出现在剪影中，而红色的氢发射星云，以及蓝色的尘埃反射星云，填补了宇宙的画布。来自天鹅座OB2大质量、热的年轻恒星的紫外线辐射电离了该区域的氢原子，当质子和电子重新结合时，产生了特有的红光。嵌入的天鹅座OB2恒星也提供了被尘埃云强烈反射的蓝色星光。在NGC 6914的估计距离上，这张超过1度宽的望远镜视野跨度约为100光年。
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A study in contrasts, this colorful skyscape features stars, dust, and glowing gas in the vicinity of NGC 6914. The interstellar complex of nebulae lies some 6,000 light-years away, toward the high-flying northern constellation Cygnus and the plane of our Milky Way Galaxy. Obscuring interstellar dust clouds appear in silhouette while reddish hydrogen emission nebulae, along with the dusty blue reflection nebulae, fill the cosmic canvas. Ultraviolet radiation from the massive, hot, young stars of the extensive Cygnus OB2 association ionize the region's atomic hydrogen gas, producing the characteristic red glow as protons and electrons recombine. Embedded Cygnus OB2 stars also provide the blue starlight strongly reflected by the dust clouds. The over 1 degree wide telescopic field of view spans about 100 light-years at the estimated distance of NGC 6914.
© Giorgio Ferrari