missississi

August 11, 2007

宇宙龙卷风HH49/50

Filed under: 客舟

来自APOD

长度以光年计,斯必泽望远镜照片中,从顶端向下吹的这个宇宙龙卷其实是一个强劲的喷流,编号为HH(Herbig-Haro,赫比格-阿罗)49/50。虽然这样的强能量流常与年轻恒星的形成相关,这个螺旋状外貌的天体仍显得神秘莫测。吹出每秒100千米喷流的肇事胚胎恒星刚刚位于照片顶端之外,而照片上喷流顶端的亮恒星可能只是偶然在视线前景。在假彩色红外图像中,这龙卷外流物质加热周围的尘埃云而产生红外光。龙卷顶端的色码显示从红向蓝变化的趋势,表明系统发射短波的增强,这又表明喷流头部分子激发增强,正冲击着星际气体。HH49/50离我们450光年远,在蝘蜒I分子云中。

 

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