狼穴星云
(原标题: Wolf's Cave Nebula)
2022-11-15
浏览次数: 18
在星表中发现的神秘的蓝色反射星云VdB 152或Ced 201确实非常暗淡。它位于长长的黑暗星云巴纳德175的顶端，位于一个被称为沃尔夫洞穴的尘埃复合体中。在这张深望远镜照片的中心，这些宇宙幻影位于1400光年外的银河系北部的仙王座。该区域的星际尘埃阻挡了来自背景恒星的光线，并散射了来自嵌入的明亮恒星的光线，使末端星云呈现出特有的蓝色。虽然恒星确实是在分子云中形成的，但这颗恒星似乎只是偶然进入了这个区域，因为它在太空中的测量速度与分子云的速度大不相同。在图像的底部是行星状星云Dengel-Hartl 5，而在图像的右侧也可以看到来自古代超新星遗迹的红色发光气体。
查看原文解释
The mysterious blue reflection nebula found in catalogs as VdB 152 or Ced 201 really is very faint. It lies at the tip of the long dark nebula Barnard 175 in a dusty complex that has also been called Wolf's Cave. At the center of this deep telescopic view, the cosmic apparitions are nearly 1,400 light-years away along the northern Milky Way in the royal constellation Cepheus. Interstellar dust in the region blocks light from background stars and scatters light from the embedded bright star, giving the end nebula its characteristic blue color. Though stars do form in molecular clouds, this star seems to have only accidentally wandered into the area, as its measured velocity through space is very different from the cloud's velocity. At the image bottom is the planetary nebula Dengel-Hartl 5, while red glowing gas from an ancient supernova remnant is also visible along the image's right side.
© Gianni Lacroce