HH 49：来自韦伯的星际喷射
(原标题: HH 49: Interstellar Jet from Webb)
2025-04-09
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这个星际喷流的顶端是什么？首先让我们考虑一下这个喷流：它被一个刚刚形成的恒星系统排出，被编目为赫比格-哈罗49 （HH 49）。恒星系统排出的喷流是不可见的——它在右下方。这张由詹姆斯·韦伯太空望远镜拍摄的红外图像显示了复杂的锥形结构，其中还包括另一架编号为HH 50的喷气机。快速喷射粒子撞击周围的星际气体，形成激波，在红外光中发出明显的光芒——如图所示为红褐色的脊。这张JWST的图像也解决了HH 49尖端不寻常物体的神秘面纱：它是一个遥远的螺旋星系。因此，蓝色中心不是一颗恒星，而是许多颗，周围的圆环实际上是螺旋臂。跳跃宇宙：随机APOD生成器
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What's at the tip of this interstellar jet? First let's consider the jet: it is being expelled by a star system just forming and is cataloged as Herbig-Haro 49 (HH 49). The star system expelling this jet is not visible -- it is off to the lower right. The complex conical structure featured in this infrared image by the James Webb Space Telescope also includes another jet cataloged as HH 50. The fast jet particles impact the surrounding interstellar gas and form shock waves that glow prominently in infrared light -- shown here as reddish-brown ridges. This JWST image also resolved the mystery of the unusual object at HH 49's tip: it is a spiral galaxy far in the distance. The blue center is therefore not one star but many, and the surrounding circular rings are actually spiral arms. Jump Around the Universe: Random APOD Generator