没有恒星的鹰状星云
(原标题: Star-Forming Eagle Nebula without Stars)
2022-10-04
浏览次数: 15
整个东西看起来像只鹰。然而，仔细观察鹰状星云的中心，就会发现这个明亮的区域实际上是一个窗口，可以看到一个更大的黑暗尘埃壳的中心。透过这扇窗户，一个明亮的工作室出现在那里，一个完整的疏散星团正在形成。在这个洞穴中，高大的柱子和圆形的暗尘埃球和冷分子气体仍然存在，恒星仍在形成。矛盾的是，也许在没有恒星的情况下更容易欣赏这个令人印象深刻的恒星形成工厂——这些恒星在特色图像中已经被数字删除了。老鹰发射星云，标记为M16，距离我们约6500光年，跨度约20光年，用双筒望远镜可以看到蛇星座。制作这张照片需要超过22个小时的成像，并将氢（红色）和氧（蓝色）发出的特定颜色结合起来。
查看原文解释
The whole thing looks like an eagle. A closer look at the Eagle Nebula's center, however, shows the bright region is actually a window into the center of a larger dark shell of dust. Through this window, a brightly-lit workshop appears where a whole open cluster of stars is being formed. In this cavity tall pillars and round globules of dark dust and cold molecular gas remain where stars are still forming. Paradoxically, it is perhaps easier to appreciate this impressive factory of star formation by seeing it without its stars -- which have been digitally removed in the featured image. The Eagle emission nebula, tagged M16, lies about 6500 light years away, spans about 20 light-years, and is visible with binoculars toward the constellation of the Serpent (Serpens). Creating this picture involved over 22 hours of imaging and combining colors emitted specifically by hydrogen (red), and oxygen (blue).
© Yannick Akar