靠近心脏星云
(原标题: Near to the Heart Nebula)
2024-12-17
浏览次数: 16
是什么让心脏星云兴奋？首先，左上角的大发射星云，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硫（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。然而，这张广角图像显示的更多，包括心脏下方的鱼头星云，左下方的超新星遗迹，以及图像右侧的三个行星状星云。这张照片是在57个夜晚拍摄的，但它是如此的深，以至于它清楚地显示出较暗的长而复杂的细丝。
查看原文解释
What excites the Heart Nebula? First, the large emission nebula on the upper 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 sulfur (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. This wide field image shows much more, though, including the Fishhead Nebula just below the Heart, a supernova remnant on the lower left, and three planetary nebulas on the image right. Taken over 57 nights, this image is so deep, though, that it clearly shows fainter long and complex filaments.
© Jeff Horne & Drew Evans