银河卷云：曼德尔·威尔逊
(原标题: Galactic Cirrus: Mandel Wilson 9)
2023-07-21
浏览次数: 12
银河系中恒星发出的光被这些宇宙尘埃云反射，这些尘埃云在银河系平面上方300光年左右的地方翱翔。一些人称其为综合通量星云，通常在高纬度星系中发现，尘埃状的星系卷云是暗淡的。但它们可以在银河南北两极的大片天空中被追踪到。随着星光的反射，研究表明，当星际尘埃颗粒将不可见的紫外线辐射转化为可见的红光时，尘埃云会产生微弱的红色发光。这张照片也捕捉到了附近的银河系恒星和遥远的背景星系，这张非常深的宽视场的照片探索了一个被称为曼德尔威尔逊9号的昏暗星系卷云的综合体。它横跨地球的天空超过3度，朝向遥远的南方星座Apus。
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The combined light of stars along the Milky Way are reflected by these cosmic dust clouds that soar 300 light-years or so above the plane of our galaxy. Known to some as integrated flux nebulae and commonly found at high galactic latitudes, the dusty galactic cirrus clouds are faint. But they can be traced over large regions of the sky toward the North and South Galactic poles. Along with the reflection of starlight, studies indicate the dust clouds produce a faint reddish luminescence as interstellar dust grains convert invisible ultraviolet radiation to visible red light. Also capturing nearby Milky Way stars and distant background galaxies, this remarkably deep, wide-field image explores a complex of faint galactic cirrus known as Mandel Wilson 9. It spans over three degrees across planet Earth's skies toward the far southern constellation Apus.
© Gabriel Rodrigues Santos