深视场：心脏星云
(原标题: Deep Field: The Heart Nebula)
2023-12-13
浏览次数: 15
是什么让心脏星云兴奋？首先，左边的大发射星云，编号为IC 1805，看起来有点像人类的心脏。星云在其最主要的元素氢发出的红光中发出明亮的光芒，但这张长时间曝光的照片也混合了硅（黄色）和氧（蓝色）发出的光。在心脏星云的中心是来自疏散星团Melotte 15的年轻恒星，它们正在用激发原子的高能光和风侵蚀着几根风景如画的尘埃柱。心脏星云位于仙后座大约7500光年远的地方。在心脏星云的右下方是鱼头星云的伴星。然而，这张宽而深的图像清楚地显示，炽热的气体围绕着心脏星云的各个方向。今晚守望：双子座
查看原文解释
What excites the Heart Nebula? First, the large emission nebula on the left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted by its most prominent element, hydrogen, but this long-exposure image was also blended with light emitted by silicon (yellow) and oxygen (blue). In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their atom-exciting energetic light and winds. The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia. At the bottom right of the Heart Nebula is the companion Fishhead Nebula. This wide and deep image clearly shows, though, that glowing gas surrounds the Heart Nebula in all directions. Tonight watch: The Geminids
© William Ostling, Telescope Live