蛇夫座附近五颜六色的星星和云
(原标题: Colorful Stars and Clouds near Rho Ophiuchi)
2024-06-11
浏览次数: 14
为什么心宿二和蛇夫座附近的天空如此丰富多彩，却充满灰尘？这些颜色是物体和过程混合的结果。被星光照亮的细尘产生蓝色反射星云。原子被紫外光激发的气体云产生红色的发射星云。背光的尘埃云阻挡了星光，所以看起来很暗。心宿二是一颗红色超巨星，也是夜空中较亮的恒星之一，它照亮了特色图像右上方的黄红色云层。蛇夫座Rho恒星系统位于左侧蓝色反射星云的中心，而另一个反射星云IC 4605位于图像中心的正下方和右侧。这些恒星云比人类所能看到的还要丰富多彩，它们通过电磁波谱发射光线。开放科学：浏览天体物理学源代码库中的3400多个代码
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Why is the sky near Antares and Rho Ophiuchi so colorful, yet dusty? The colors result from a mixture of objects and processes. Fine dust -- illuminated by starlight -- produces blue reflection nebulae. Gaseous clouds whose atoms are excited by ultraviolet starlight produce reddish emission nebulae. Backlit dust clouds block starlight and so appear dark. Antares, a red supergiant and one of the brighter stars in the night sky, lights up the yellow-red clouds on the upper right of the featured image. The Rho Ophiuchi star system lies at the center of the blue reflection nebula on the left, while a different reflection nebula, IC 4605, lies just below and right of the image center. These star clouds are even more colorful than humans can see, emitting light across the electromagnetic spectrum. Open Science: Browse 3,400+ codes in the Astrophysics Source Code Library
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