LDN 1622：妖怪星云
(原标题: LDN 1622: The Boogeyman Nebula)
2023-01-25
浏览次数: 17
对一些人来说，这个黑色的形状看起来像神话中的妖怪。从科学的角度来看，林兹的暗星云（LDN） 1622出现在一个微弱的背景下，背景是发光的氢气，只有在该地区的长时间望远镜曝光才能看到。相比之下，更明亮的反射星云vdB 62更容易在特征图像的上方和中间的右侧看到。LDN 1622位于我们银河系的平面附近，靠近巴纳德环的天空，巴纳德环是一个巨大的云，围绕着猎户座腰带和剑中丰富的发射星云。从后掠的轮廓来看，LDN 1622的模糊尘埃被认为位于类似的距离，可能是1500光年远。在这个距离上，这个2度宽的视野将跨越大约60光年。年轻的恒星确实隐藏在黑暗的广阔空间中，并在斯皮策太空望远镜的红外图像中被发现。
查看原文解释
To some, the dark shape looks like a mythical boogeyman. Scientifically, Lynds' Dark Nebula (LDN) 1622 appears against a faint background of glowing hydrogen gas only visible in long telescopic exposures of the region. In contrast, the brighter reflection nebula vdB 62 is more easily seen just above and to the right of center in the featured image. LDN 1622 lies near the plane of our Milky Way Galaxy, close on the sky to Barnard's Loop, a large cloud surrounding the rich complex of emission nebulae found in the Belt and Sword of Orion. With swept-back outlines, the obscuring dust of LDN 1622 is thought to lie at a similar distance, perhaps 1,500 light-years away. At that distance, this 2-degree wide field of view would span about 60 light-years. Young stars do lie hidden within the dark expanse and have been revealed in Spitzer Space Telescope infrared images.
© Joshua Carter